Source: https://www.scribd.com/document/106864622/Regulations-Maritime-Electrical-Installations
Timestamp: 2018-12-13 06:36:01
Document Index: 776849206

Matched Legal Cases: ['§ 1', '§ 2', '§ 2', '§ 3', '§ 3', '§ 4', '§ 4', '§ 2', '§ 5', '§ 5', '§ 6', '§ 6', '§ 20', '§ 7', '§ 6', '§ 8', '§ 8', '§ 7', '§ 9', '§ 9', '§ 10', '§ 1', '§ 10', '§ 11', '§ 11', '§ 13', '§ 12', '§ 12', '§ 13', '§ 15', '§ 14', '§ 15', '§ 14', '§ 16', '§ 16', '§ 17', '§ 17', '§ 19', '§ 19', '§ 18', '§ 21', '§ 22', '§ 21', '§ 22', '§ 20', '§ 20', '§ 23', '§ 24', '§ 24', '§ 25', '§ 25', '§ 27', '§ 27', '§ 26', '§ 28', '§ 28', '§ 29', '§ 29', '§ 30', '§ 31', '§ 30', '§ 31', '§ 32', '§ 33', '§ 32', '§ 33', '§ 34', '§ 36', '§ 35', '§ 12', '§ 36', '§ 37', '§ 38', '§ 38', '§ 39', '§ 40', '§ 41', '§ 42', '§ 43', '§ 43', '§ 44', '§ 45', '§ 45', '§ 45', '§ 38', '§ 46', '§ 46', '§ 47', '§ 47', '§ 48', '§ 48', '§ 50', '§ 2', '§ 50', '§ 49', '§ 51', '§ 51', '§ 52', '§ 53', 'arts 2']

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Laid down on 4 December 2001 by the Directorate for Fire and Electrical Safety, Norway pursuant to section 2 of Act No. 4 of 24 May 1929 relating to Supervisions of Electrical Installations and Electrical Equipment. These Regulations implement Council Directive 97/70/EC setting up a harmonised safety regime for fishing vessels of 24 metres in length and over, cf. Annex XIII of the Agreement on the European Economic Area, Council Directive 98/18/EC on safety rules and standards for passenger ships, cf. Annex XIII, subsection 56f, of the Agreement on the European Economic Area, and Directive 94/25/EC of the European Parliament and of the Council of 16 June 1994 relating to recreational craft, cf. Annex II of the Agreement on the European Economic Area.
These regulations have been laid down pursuant to the Act No. 4 of 24 May 1929 relating to Supervision of Electrical Installations and Electrical Equipment. The purpose of the Regulations is to achieve a satisfactory level of electrical safety in maritime electrical installations and electrical equipment connected to these installations. These regulations replace the Regulation for Electrical Installations – Maritime Installations of 1 March 1990. These Regulations contain functional requirements for the safe operation of a maritime electrical installation. The text of the Regulations, which is legally binding, must be read in the context of the guide and the standards mentioned in section 5 of the Regulations. There may be ways of meeting the legal functional requirements of the Regulations other than those stated in the standards. However, if the guide and the standards are used, the legal requirements of the Regulations will be presumed met. The document in annex II is to consider as a supplement to the IEC 60092-serie, and may be used to meet the requirements in the Regulations Relating to Maritime Electrical Installations. The text of this annex is a guide and thus not legally binding. Enterprises to which the provisions of these Regulations apply, are required to have a system of internal control that ensures compliance with the requirements in the Regulations, cf. Regulations relating to Systematic Health, Environmental and Safety Activities in Enterprises (Internal Control Regulations) laid down by Royal Decree of 6 December 1996. These Regulations implement Council Directive 97/70/EC setting up a harmonised safety regime for fishing vessels of 24 metres in length and over, cf. Annex XIII of the Agreement on the European Economic Area, Council Directive 98/18/EC on safety rules and standards for passenger ships, cf. Annex XIII, subsection 56f, of the Agreement on the European Economic Area, and Directive 94/25/EC of the European Parliament and of the Council relating to recreational craft, cf. Annex II of the Agreement on the European Economic Area. The supervision of maritime electrical installations is regulated through a separate agreement with the Norwegian Maritime Directorate. The supervision of offshore installations is similarly regulated in an agreement with the Norwegian Petroleum Directorate. Norwegian Directorate for Product and Electrical Safety 4 December 2001
The purpose of these regulations is to achieve a satisfactory level of electrical safety in maritime electrical installations and in the operation of electrical equipment connected to these installations. Re § 1 These regulations apply to low voltage and high voltage installations. Electrical safety comprises dangers posed by the electricity itself, such as danger arising from contact with electricity and fire and safety factors associated with the use of electricity and electrical equipment. Electrical safety includes the following: – – – – – – – – – – – – – – protection against contact with energized parts, protection against arcing/overheating (personal injury, danger of fire, explosions), consequential injury, protection against electrostatic charges, protection against undesired chemical processes caused by electricity (fx in connections and when using a hull return system), protection against harmful effects from electromagnetic fields, electromagnetic compatibility, safe construction, installation and maintenance of electrical equipment, safe system design, construction, use and maintenance of maritime electrical installations, safe procedures and safety measures for work on or near maritime electrical installations, power supplied in a safe manner, high quality power supply, protection against lightning, protection to prevent power cuts causing danger to life or health.
The responsibility of the Directorate for Fire and Electrical Safety. The use and maintenance of electro-medical equipment is regulated by the Regulations of 20 August 1999 concerning electromedical equipment. the Ministry of Petroleum and Energy is the authority responsible for safety on fixed and mobile offshore units engaged in petroleum activities on the Norwegian continental shelf. The Directorate for Fire and Electrical Safety assists the Norwegian Petroleum Directorate with regard to electrical installations on mobile offshore units used in petroleum activities. Administered by the Norwegian Post and Telecommunications Authority (electronic radio. among other duties. telecommunications and information equipment) Administered by the Ministry of Defence (shipboard equipment or floating or mobile installations for military use). mobile offshore units. The Regulations do not apply to: – electronic radio. with subsequent amendments. construction. operation. telecommunications and information equipment. the Norwegian Maritime Directorate is the supervisory authority for vessels and mobile offshore units. The Regulations also apply to electrical equipment connected to maritime electrical installations. The Convention of 1974 on the Safety of Life at Sea (SOLAS). The supervisory responsibility of the Directorate for Fire and Electrical Safety. These Regulations do not apply to those parts of the electrical installations on ships and mobile offshore units to which the provisions of the International Convention for the Safety of Life at Sea (SOLAS) apply. Under the Seaworthiness Act. alteration and maintenance of maritime electrical installations on Norwegian ships. 72 of 29 November 1996 relating to petroleum activities.§ 2 Scope The Regulations apply to the design. Norway with regard to vessels involves. assisting the Maritime Directorate with the issue of maritime certificates. Otherwise. mobile offshore units and floating or mobile installations means those registered in for example the Norwegian Ordinary Register (NOR) or the Norwegian International Ship Register (NIS). Re § 2 Norwegian vessels. under Act No. applies to vessels above 500 gross register tons in international traffic and passenger vessels registered for more than 12 passengers in 4 Regulations relating to maritime electrical installations . and recreational craft. and – shipboard equipment or floating or mobile installations for military use. floating or mobile installations. Trade in electrical equipment is regulated by the Regulations of 15 August 1995 concerning electrical equipment. Norway on mobile offshore units is related to the issue of maritime certificates.
Norway before registration in a Norwegian register is to be regarded as prior approval of electrical installations pursuant to these Regulations. laid down by the Ministry of Children and Family Affairs and administered by the Norwegian Maritime Directorate. feeding rafts. see regulations of 6 November 1998 concerning low voltage electrical installations.). For installations on board ships and floating or mobile installations constructed abroad. see also Regulations of 14 June 1996 concerning recreational craft. For recreational craft. Regulations relating to maritime electrical installations 5 . these regulations are only applicable when the ship or floating or mobile installation has been registered in a Norwegian register. Inspection work carried out by the Directorate for Fire and Electrical Safety. With regard to fish farming equipment (net cages.international traffic. etc. SOLAS was laid down by the IMO (International Maritime Organization) and is administered by the Norwegian Maritime Directorate.
§ 3 Definitions Hazardous area (explosive atmosphere) Area where there is or may be an explosive atmosphere in such quantities that special precautions are required in connection with the design. Recreational craft Craft of any kind and with any form of propulsion. Responsible for operation To have the overall technical responsibility. the hull of which is between 2. Responsible for maintenance To have the overall technical responsibility and to ensure that maintenance is planned and carried out so that the condition of electrical installations and electrical equipment is as prescribed in the regulations. technical construction. and to ensure that electrical installations are planned.5 and 24 metres in length and to which the Regulations of 14 June 1996 concerning recreational craft apply. constructed and operated in compliance with provisions in regulations concerning notification and approval. installation and use of electrical equipment or other ignition sources. Disconnection A safety function which interrupts the power supply to all or some parts of the electrical installation by disconnecting these parts from the power source(s). 6 Regulations relating to maritime electrical installations . Responsible for the construction of electrical installations To have the overall technical responsibility and to ensure that electrical installations are constructed in accordance with the applicable regulations. qualifications and safety routines. including that the equipment used complies with current provisions concerning documentation and that personnel are qualified.
armour. Single-core cable without metal sheath. Design Design involves all aspects from preparing a detailed plan. Floating or mobile installations Floating and mobile installations are drilling platforms. although the cable’s own fittings are excluded. c. floating docks. d. b. Adequate distance between cores within cable and between core and base. Penetrations made of insulating material. Shipowner The shipowner is the person who equips and operates a ship at his or her own expense. Adequate distance between cores within cable and between core and base. lighters. dredgers. project description and drawings for major maritime electrical installations to a simple plan for one individual circuit. Regulations relating to maritime electrical installations 7 . floating cranes. with one cable in each conduit.Short circuit-proof installations a. Single-core uninsulated cables in insulated conduits. etc. although the cable’s own fittings are excluded. Uninsulated conductors mounted on insulators and with insulated penetrations. braiding/screen. Single-core insulated cable mounted on supports of insulating material.
5 m is less than 10 per cent over a period of one year when the vessel is in year-round operation.5 m is less than 10 per cent over a period of one year when the vessel is in year-round operation. Class B: Passenger vessels engaged on domestic voyages in the course of which the vessel is not at any time more than 20 nautical miles from land where ship-wrecked persons may be put ashore at medium tide. Re § 3 Hull length is measured in accordance with the harmonized standards set out in the regulations laid down by the Ministry of Children and Family Affairs on 14 June 1996 concerning recreational craft. C and D. where the vessel is at no time more than 6 nautical miles from land where ship-wrecked persons may be put ashore at medium tide.Classes of passenger ship Class A: Passenger vessels engaged on domestic voyages other than those included in Classes B. or in a specific period of the year when the vessel is exclusively in operation in that period (for example summer operation). where the vessel is at no time more than 15 nautical miles from land where ship-wrecked persons may be put ashore at medium tide. Class C: Passenger vessels engaged on domestic voyages in sea areas where the probability of significant wave heights of more than 2. 8 Regulations relating to maritime electrical installations . including the exceptions mentioned. Class D: Passenger vessels engaged on domestic voyages in sea areas where the probability of significant wave heights of more than 1. or in a specific period of the year when the vessel is exclusively in operation in that period (for example summer operation).
and safety requirements § 4 Who these regulations are intended for The shipowner shall ensure that installations to which these Regulations apply at all times satisfy the safety requirements laid down in the Regulations. 398 concerning requirements relating to qualifications. Regulations of 30 October 1998 concerning safety when working on or operating low voltage installations apply both with regard to the responsibility for constructing and repairing maritime electrical installations and to the responsibility for operating and carrying out maintenance on these installations. construct. see section 14 of the Norwegian Maritime Directorate’s regulations of 29 April 1998 No. constructs. alters or carries out maintenance on electrical installations is responsible for ensuring that the work is carried out in accordance with the requirements of these Regulations. Caution shall be shown when using or connecting electrical equipment to an installation so that there is no danger to life. Anyone who designs. health or property. Re § 4 The regulations of 14 December 1993 concerning qualifications for electropersonnel specify who is entitled to design. the issue of certificates and matters relating to certificate rights for personnel on Norwegian ships Regulations relating to maritime electrical installations 9 .Chapter II – Persons subject to duties. Owners of recreational craft are subject to the same obligations as shipowners. If the maritime installation is supplied from a high voltage installation. With regard to qualifications required of crew members. make alterations to and carry out maintenance on maritime electrical installations. the regulations of 30 October 1998 concerning safety when working on and operating high voltage installations will also apply.
however § 2 regarding the interface between SOLAS and these regulations). installations in accomodation areas such as 10 Regulations relating to maritime electrical installations . Electric bilge pumps (=EN 28849:1993)(ISO 8849:1990). ISO 8383 Lifts on ships – specific requirements. supplemented by the accompanying guide. however. relevant provisions for maritime installations might be a description of distribution systems. If a different solution is chosen. The following standards describe how the safety requirements in Chapter IV may be met: – – IEC 60092 series Electrical Installations in Ships. AODC Code Code of practice for the safe use of electricity under water. ISO/DIS 10133 Small craft – electrical systems – extra low voltage direct current installations. other solutions may be chosen. NEK EN 60079 series Electrical installations in hazardous areas (for the construction of tankers. IEC 61892 series Mobile and fixed offshore units – Electrical installations. NEK 400– Electrical low voltage installations. Nordic Boat Standard for installations referred to in regulations from the Norwegian Maritime Directorate. annexes and standards (including the more detailed technical guide) together indicate the safety level required. MODU Code Code for the construction and equipment of mobile offshore drilling units. documentary evidence shall be supplied to show that an equivalent level of safety has been achieved. IEC 60439 Low-voltage switchgear and controlgear assemblies. cf.e. NS ISO 8849 Small craft.§ 5 Compliance with safety requirements The Regulations. Adapted translation of CENELEC HD 384 and IEC 60363 (relevant provisions). or parts of the standards are combined. see IEC 60 092-502 Tankers. IMO Resolution A686(17) Code on alarms and indicators. IMO Resolution MSC 36(63) International Code of Safety for high-speed craft (HSC Code). – – – – – – – – – – – – – – With regard to NEK 400. Re § 5 The detailed recommendations given in these guidelines and in the standards are not legally binding. IEC 60533: Electrical and electronic installations in vessels – Electromagnetic compatibility (EMC). ISO 10134 – Small craft – electrical devices – lightning protection. ISO/DIS 13297 Small craft – electrical systems – alternating current installations. i.
the Directorate for Fire and Electrical Safety has made necessary additions on which use of the IEC 60092 series may be based. It is assumed that the latest issues of the standards referred to above are used at all times.cabins.. The IEC 60092 series was translated into Norwegian through NEK 410 Norwegian standards for maritime electrical installations – Installations and equipment on board ships. etc. "Norms" and "standards" are synonymous terms. the term "standards" is used throughout. In these regulations. References are therefore undated and there is no reference to any particular issue. In Appendix II of these regulations. In the event of discrepancies between the IEC 60092 series and NEK 410. swimming pools. Regulations relating to maritime electrical installations 11 . the IEC 60092 series will apply. bathrooms etc. thermal systems.
information and notification § 6 Inspection. Documentation 12 Regulations relating to maritime electrical installations . Declaration of conformity.Chapter III –Documentation.
or a detailed description of the solutions adopted to meet the requirements of these Regulations when standards have not been applied. and – the date of the declaration. – names of standards applied in full or in part. or other technical specifications on which the installation has been based when standards have not been applied. Supporting documentation shall be prepared so that an assessment can be made of whether the installation conforms to the requirements of the Regulations. constructing or altering the installation. Special documentation requirements apply to electrical installations in hazardous areas.Before using an installation and after each alteration. These instructions shall be readily available on board. Regulations relating to maritime electrical installations 13 . The shipowner shall see to it that a declaration of conformity is carried on board. the person responsible for designing/ constructing the installation declares to the owner that the electrical installation is in conformity with the safety requirements in the regulations. The declaration of conformity shall at least contain the following: – the name and address of the person or persons responsible for designing. or Norwegian standards. constructing or altering the installation. Re § 6 In the declaration of conformity. An example of the declaration of conformity is shown in Appendix I. – the installation’s identification code. § 20. the person responsible for designing or constructing the installation shall draw up instructions for the use and maintenance of these measures. – a statement confirming that the installation satisfies the safety requirements in these Regulations. cf. If special precautionary measures need to be taken when using the installation to satisfy the requirements relating to electromagnetic compatibility. – the signature(s) of the person or persons responsible for designing. the shipowner shall see to it that the installation has been inspected and tested to ensure that it satisfies the safety requirements laid down in these Regulations. Anyone responsible for designing. This section does not apply to recreational craft. A list shall be supplied of the standards used. constructing or altering installations shall make out a declaration of conformity with the safety requirements in these Regulations for the shipowner. The documentation shall be prepared in accordance with current IEC standards.
. main and emergency switchboards. cf. drawing in additions. laid down by the Ministry of Children and Family Affairs. important services. Electrotechnical calculations are necessary if compliance with the safety requirements in the regulations cannot otherwise be verified. including operating philosophy. duplication. transformers. on existing documentation will be sufficient. section 10 and guidelines to section 10. see regulations from the Norwegian Maritime Directorate and regulations concerning safety and communications systems from the Norwegian Petroleum Directorate. description of emergency power system.no. specifications showing arrangement and performance of the various protective devices and how they provide complete and coordinated automatic protection to ensure continuity of service through the discriminative action of the protective devices. convertors and accumulator batteries. one-line diagram for the entire installation. 5 and 6 of the regulations of 14 June 1996 relating to recreational craft. corrections etc. the need for new documentation must be assessed in each individual case. results of checks and tests made of installation. interlocking.Documentation necessary for the issue of a declaration of conformity may include the following: – – – – – results of electrotechnical system analysis and risk assessment. see sections 4. transformers. – – – – – – – – For installations with a voltage below 50 V. overview diagram of steering engine system. For minor alterations (cf. administered by the Norwegian Maritime Directorate. documentation of ship’s lights system. statement showing basis of assessment for the determination of generator size (effect balance). With regard to the definition of important equipment and important services. An example of the form that may be used in connection with the declaration of conformity is available on the Directorate’s website www. 14 Regulations relating to maritime electrical installations . rated values for generators with prime movers. complete diagram and arrangement drawings for main switchboard and major junctions etc. cable types and cross section. see installation certificate 27. and operational and maintenance procedures for the installation and any equipment connected to it. For alterations to existing installations. With regard to the declaration of conformity etc for recreational craft.dbe. section 8). arrangement drawings showing the location of generators. cable layout for main circuits and circuits for emergency power supply. special documentation for installations in hazardous areas (fire/explosion). including area classification and certificates for electrical equipment in hazardous areas.
section 20. – the shipowner’s name and address. Notification is not required for minor alterations. – the estimated date of completion. maintenance. This section does not apply to recreational craft. Re § 7 This provision is intended to ensure that updated documentation is available and can provide the basis for inspection. cf. Anyone who pursuant to section 6 makes out a declaration of conformity shall keep a copy of the declaration for a period of at least ten years from the day the declaration of conformity was made out. cf. Other documentation related to the declaration of conformity must be kept by the shipowner. the shipowner shall ensure that the supervisory authority is notified of the work. § 6. Installations with a nominal voltage that does not exceed 50 V alternating voltage and 120 V direct voltage are exempt from notification provided they are not placed in hazardous locations. – the construction number of the ship/floating or mobile installation. Norway pursuant to section 49 of these regulations. Special documentation provisions apply to electrical installations in hazardous areas. The notification shall at least contain: – information about the subject of the notification. or whoever conducts supervision on behalf of the Directorate for Fire and Electrical Safety. § 8 Notification Before work commences to construct or alter maritime electrical installations. or its name and distinctive numbers or letters. – the name of the enterprise responsible for design and construction. Regulations relating to maritime electrical installations 15 . Norway. Re § 8 Notification is to be sent to the Directorate for Fire and Electrical Safety.§ 7 Responsibility for keeping documentation The shipowner must at all times see to it that the declaration of conformity and the documentation necessary for the operation of the installation is available on board. This section does not apply to recreational craft. developments to the installation and other alterations.
For notification of accidents involving personal injury. telefax or electronic mail. the Directorate for Fire and Electrical Safety.no. This form is available on the Directorate’s website www.no. Norway has received notification. Norway has produced a notification form for maritime electrical installations. Additional documentation may be required as necessary.dbe. 16 Regulations relating to maritime electrical installations . See guidelines to section 6. main switchboards or major distribution boards or important services.dbe. for example by telephone. It is important that notification be given quickly. § 9 Reporting accidents/incidents Personal injury and material damage caused by electricity shall be reported as soon as possible to the Directorate for Fire and Electrical Safety. "Minor alterations" means alterations that do not affect the generator system.The Directorate for Fire and Electrical Safety. Re § 9 The purpose of giving notification of accidents/incidents is to make it possible to find the cause of an accident and thereby prevent further damage and similar accidents. Norway has produced a form "Report on electrical accident resulting in personal injury". and upgrading of the installation that cannot affect the choice of generator size. When the Directorate for Fire and Electrical Safety. documentation may be required to be made available so as to assess whether the installation has been designed in accordance with the requirements in the regulations. Norway. The form is available on the Directorate’s website www.
tankers. This also means that output requirements. the power supply must not fail the first time an earth fault occurs. Re § 10 The concept of electrical safety (cf. guidelines to § 1) involves a total assessment of all aspects of the installation as it is used in order to ensure that the installation is appropriate to the use for which it was intended. The results of the analysis shall be taken account of in the electrical installation. Regulations relating to maritime electrical installations 17 . The system design. How comprehensive a risk assessment should be is largely dependent on the complexity of the installation and the expected risks. operation and maintenance § 10 Planning and assessment of risk Maritime electrical installations shall be such that life. electrical propulsion systems. health and property are protected from danger and injury or damage during normal use and such that the installation is appropriate to the use for which it was intended. must be planned and constructed in accordance with the present Regulations. alteration. Examples of installations where special risk assessment is necessary are – – – – – – passenger vessels. mobile offshore units.Chapter IV – Basic safety for design. including the necessary protection measures. construction. protection against interruption of the power supply and selectivity of protection must be taken into consideration so that the installation has adequate reliability with regard to power supply. The installation and equipment must withstand the dynamic and static stresses that can be expected. A risk analysis shall be carried out to uncover the risks in and relating to the electrical installation. Adequate reliability also means that any installation that according to Norwegian Maritime Directorate regulations is required to have an emergency power supply. lift installations. requires an assessment of the risks associated with the particular installation. The provision also means that for important services that are not duplicated. explosive atmospheres.
however. – that there is sufficient room to replace and install individual components.– – electrical installations in spaces where electro-medical equipment will be located. In this assessment. repair. Parts of the installation no longer in use shall either be maintained in accordance with the Regulations. safely and easily. maintenance. In the case of large systems where this is not practicable. § 11 Accessibility and maintenance The installation shall be such: – that it is accessible for inspection. operation and testing. well-lit location where such supervision and operation can take place without danger. necessary repair etc. in a suitable. an assessment must be made of the frequency and scope of maintenance that can reasonably be expected. the following factors must be taken into consideration: – – that it must be possible to carry out any periodical inspection. and – that such work can be conducted without danger for the person carrying out the work. it is considered sufficient to mark the system clearly and make it safe. and high voltage installations. Equipment that requires supervision or operation while running shall be placed so that it is accessible. Re § 11 In planning and constructing an installation. 18 Regulations relating to maritime electrical installations . and that the effectiveness of safety measures is maintained. or be removed or made safe and clearly marked. test.
– overheating that can lead to burns. issued by the Norwegian Directorate for Product and Electrical Safety (Directorate for Fire and Electrical Safety. § 13 Earthing system The earthing system shall be appropriate for the distribution system adopted for all or parts of the installation so as to prevent dangerous current flows or overheating that can result in burns or a fire. health and property. With regard to the technical construction of permitted distribution systems. – power cuts that can endanger life. see relevant provisions in NEK 400. The distribution system shall be suited to its purpose. fire. This provision also means that TN-C systems are not permitted. Re § 12 For an installation to be safe.§ 12 Distribution system The installation shall be such that the distribution system used for all or parts of the installation together with the safety measures required for the various distribution systems do not result in – dangerous current flow. In all voltage systems. Norway.) Regulations relating to maritime electrical installations 19 . the use of a hull or metal structure return system is not permitted. – harmful effects on other parts of the installation or equipment in the installation or equipment connected to it. various distribution systems must be equipped with protection measures appropriate to the characteristics of the individual system. See section 10 on planning and risk assessment. In distribution systems where the neutral point is earthed directly. may be one such measure. Re § 13 Construction of earthing systems may be based on ”Guidelines on earthing in maritime installations”. The use of high voltage should be considered if the presumed maximum short circuit current exceeds 50 kA (effective value) or the stipulated rated value on one of the generators exceeds 4 kA when low voltage is used. including the dimensioning of the neutral conductor. an earth leakage circuit breaker in circuits for lighting and heating etc. a risk of explosion or other harmful effects.
2 m2 in area. This provision also means that earthed components of the installation must not themselves form a series connection functioning as a protective conductor. Re § 15 Protection can be achieved – – by preventing people and animals in transport from being exposed to current flow by preventing them from coming into contact with exposed parts. § 14 Protection against electric shock during normal use To protect against electric shock during normal use. measures shall be put into effect to protect against danger that can arise from contact with exposed parts of the installation that have become energized as a result of a fault (indirect contact).On board vessels where the hull is made of insulating material and the system voltage exceeds 50 V. The copper plating must be attached so that it will be submersed in the sea under all conditions. or by limiting contact voltage to a safe level. for example by equipotential bonding. § 15 Protection against electric shock as a result of a fault To protect against electric shock as a result of a fault. for example by using reduced voltage from a safety power source. the installation’s earthing system must be connected with copper plating at least 0. A pipeline may not be used as earth connection. measures shall be put into effect to protect against danger that can arise from direct contact with energized parts of the installation or equipment. or by limiting contact voltage to a safe level. or 20 Regulations relating to maritime electrical installations . Re § 14 Protection may be achieved – – by preventing people and animals in transport from being exposed to current flow by for example encapsulation or insulating energized parts.
these shall work independently of each other. § 16 Protection against harmful thermal effects Electrical installations and equipment shall be such that there is no danger of ignition of combustible materials because of excessive temperatures or electrical arcs. or Regulations relating to maritime electrical installations 21 . by limiting such overcurrents to a harmless size and duration. short circuit. Re § 16 Particular attention must be given to the danger of high intermediate resistance at termination points for cables/wires. taking into consideration its duration. Thermal devices shall be equipped with a trip switch designed to cause the device to disconnect before dangerous temperatures are reached. Nor shall there be any danger of people or animals receiving burns during normal operation.– by providing an automatic safety trip switch to disconnect the power supply when a fault arises that may result in a dangerous current flow for people or animals in transport if they come into contact with exposed parts. A fault in one of these or in the cables leading to one of them shall not affect the function of the other. When there is a thermostat in addition to overheating protection. The second paragraph entails a deviation from IEC 60092-307. etc. unless use of the device is permitted without such a switch. The trip switch shall have automatic release and manual reset. § 17 Protection against overcurrents Life. for example due to overload. This provision means that bus bars and uninsulated conductors and their fittings are required to have adequate mechanical strength to withstand the dynamic stresses that may arise in connection with a short circuit. Protection may be achieved – – by ensuring that such an overcurrent is automatically disconnected before it reaches a harmful size. Re § 17 Overcurrents for conductors means any current higher than the permitted currentcarrying capacity. health and property shall be protected against injury and damage due to excessive temperatures or electromechanical stresses imposed by any kind of expected overcurrent in energized conductors.
to achieve an acceptable safety level for life. and – against damage due to other undesired high voltages. other overvoltages. Re § 19 The second subparagraph of this provision refers to protection against circumstances due to – – – – – – – overvoltages arising when connecting and disconnecting. (Short circuit-proof installations) The connection between starting battery and starting motor may be fitted with a switch instead of short circuit and overcurrent protection so that the connection can be quickly disconnected in the event of a fault. the overvoltages that may arise in the installation. and to meet the requirements for the desired operational safety. health and property. 22 Regulations relating to maritime electrical installations . and the location and characteristics of equipment designed to protect against overvoltages. a voltage limiter or direct earthing of the neutral point would be relevant protection measures.– by providing unprotected wires as to be proof against short circuit and earth faults. for example as a result of an earth fault in high voltage installations. health and property shall be protected – against the harmful effects of insulation failure or fault between circuits of differing voltages. To reduce the probability of damage due to overvoltages so as an assessment must be made of In low voltage installations supplied from a high voltage installation. § 19 Protection against overvoltage Life. § 18 Protection against fault currents Conductors other than energized conductors and any other part expected to conduct electricity as a result of insulation failure or other fault shall be able to conduct the fault current without damaging the installation or equipment. or atmospheric overvoltages.
health and property shall be protected against dangerous situations that may arise or damage caused by reconnection after a total or partial voltage drop. § 21 Protection against danger when reconnecting Life. With regard to electrical installations on car decks. engines that may endanger the operator or impair the safety of the installation if they start running unexpectedly are required to have a undervoltage protection or other measures that give the equivalent protection against dangerous situations that may arise. see the relevant sections of SOLAS and Chapter VI in these regulations. The choice of equipment and its installation shall be carried out in such a way that the installation does not pose any danger. Re § 22 Regulations relating to maritime electrical installations 23 . the reconnection shall not occur automatically. installation. section 7. maintenance and protection measures. Re § 21 Under this provision. choice of equipment. The standards given in the guidelines to section 5 may provide the basis for area classification. Updated documentation shall be available at all times showing categorization of the areas mentioned in the first paragraph. § 22 Variations in voltage and frequency Installations shall be such that variations in voltage and frequency do not exceed the levels the installation and equipment are designed for. If reconnection of a protection device may cause a dangerous situation. Re § 20 This provision means that the areas that can be categorized as hazardous must be pinpointed during the planning stage. cf.§ 20 Protection against ignition in hazardous areas Installations in hazardous areas shall be such that they do not create a danger of ignition in these areas. such as overcurrent relays with manual reset.
This provision means that the power supply must be dimensioned so that variations in voltage and frequency under normal conditions do not exceed the levels specified for each piece of equipment that forms a part of or is connected to an installation. the movements made by an appliance. § 23 Ventilation for accumulator batteries There shall be adequate ventilation to prevent the accumulation of gas that may be given off by the batteries. be climatic conditions. shock and vibration. Re § 24 External influences may fx. If equipment has been constructed so that it will not withstand the stresses of its environment. When the location of a main switchboard implies that damp and oil vapour may be absorbed from below. such additional protection would be sealed bottom plates with sealed cable penetrations. Temporarily installation/fastening/suspension of cables and wires during the installation period are to be done in a way not exposing the cables/wires to harmful stresses. it may nonetheless be used if it is given appropriate and adequate additional protection. this must be taken into account. If the equipment requires high starting current and/or high shortterm loads giving an undesirable effect on other equipment as a result. 24 Regulations relating to maritime electrical installations . § 24 Protection against external influences The installation and its equipment shall be appropriate to the external influences that can be expected.
Circuits supplied by emergency power shall have selective protection. issued by the Norwegian Maritime Directorate. switches for oil pumps and fans for oil-heating plants and ventilation fans for accommodation areas are required to be placed outside the relevant room. The emergency stop system shall be such that it does not disconnect services other than as necessary. replacements. health or property on a large scale. equipment for emergency disconnection shall be installed. can be carried out without causing danger. and it shall be possible to operate it safely. fault detection and repairs can be safely carried out. and measures shall be taken to guard against inadvertent disconnection.§ 25 Emergency disconnection In installations where a rapid (manual) disconnection is necessary to prevent danger. Such equipment shall be clearly visible and easily accessible. Re § 25 In accordance with the regulations of 17 June 1986 No. If an unexpected interruption in the power supply might involve a danger to life. § 27 Interruption in power supply Installations where an interruption in the power supply can be dangerous to life. etc. health or property shall be designed and constructed so that maintenance. switches for emergency disconnection of engine-room and boiler-room fans. 1296 relating to safety measures to prevent fire on board vessels to which the Safety at Sea Convention (SOLAS) does not apply. Re § 27 Regulations relating to maritime electrical installations 25 . an emergency power supply shall supplement the ordinary power supply. testing. circuits or individual units of equipment so that maintenance. § 26 Equipment for disconnection Equipment shall be installed to disconnect the installation.
voltage. equipment.The purpose of this provision is to ensure that installations are planned and constructed to allow operation and maintenance to be carried out. Marking shall also be used to the extent necessary to prevent danger. including room and access for replacing parts. § 28 Marking of cables. repairs or alterations are made. These requirements also apply to generators of which the rated values have been reduced. – – 26 Regulations relating to maritime electrical installations . When reclosing equipment that normally requires several generators to be run in parallel. Examples of areas where clear marking is important: – – – on/off switches. shall be clearly marked as far as is necessary in addition to the manufacturer’s markings so that they can be identified. interlocking to ensure that the equipment only might be reclosed when a sufficient number of generators are running. fuses and control devices if there is a danger of confusing these with other switches. fault localization. including charging devices and battery switches termination points for cables and conductors so that they can be identified for inspection. it may also be relevant in relation to the protection of major material items. The text of markings on board ships and floating or mobile installations in domestic traffic shall be in Norwegian. battery installations. Re § 28 If rewinding. re-marking must be carried out if there are changes in output. measures shall be taken to prevent interruption of the power supply. current etc. protective devices and other equipment Cables. circuit breakers. Although the need for an emergency power supply must primarily be assessed in relation to the danger to life and health. testing. protective devices etc. PE conductors are considered adequately marked with the colour combination yellow/green. high voltage equipment and at the entrance to and at suitable points inside spaces for high voltage installations. Fx. while the text in markings on board ships and floating or mobile installations in international traffic shall be in English. or earth conductors and neutral conductors so that they can be identified for all connections. emergency stop switches. repairs and alterations to the installation.
etc. for example the equipment manufacturer and the parties responsible for design and construction. Re § 29 In order to meet the requirements for electromagnetic compatibility (EMC). lack of noise suppression for machines. Common causes of electrical disturbances are – – – – – – – – – – – fluorescent lighting fittings are not fitted with noise filters. static electricity caused by synthetic materials in interior fittings. radar or television. or atmospheric disturbance. lack of or faulty earthing of aluminium superstructure on steel vessels. Similarly. convertors.§ 29 Electrical and electromagnetic disturbances Installations shall be such that they do not generate electrical or electromagnetic disturbances above the level at which equipment or an installation important to safety cease to function as intended. interference generated by thyristor controls. defective connections. lack of or incorrect earthing of cable screens or armouring. the equipment used and the method of installation must be appropriate to the particular conditions of the individual installation. Specific EMC problems arising in an installation must often be resolved jointly by the involved parties. faulty earthing of equipment. Regulations relating to maritime electrical installations 27 . An installation and its equipment shall have sufficient internal immunity from external electromagnetic influences so that the installation can function safely and as intended. mutual interference between a radio receiver and radio transmitter. the manufacturer’s instructions with regard to EMC for each individual part must be taken into consideration during the planning and construction of an installation. incorrect installation of cables.
Re § 30 This provision applies for example to cable penetrations in bulkheads and decks. maintained and used in accordance with the manufacturer’s instructions. § 31 Connecting equipment Electrical equipment that is part of or is intended to be connected to an installation shall be installed. The construction and sale of electrical equipment is regulated by the regulations of 15 August 1995 concerning electrical equipment. 28 Regulations relating to maritime electrical installations . radio or television. any necessary measures shall be taken to prevent secondary corrosion damage in the event of fire in the cables. The use and maintenance of electromedical equipment is regulated by the regulations of 20 August 1999 on the use and maintenance of electromedical equipment. The provision also means that when selecting cables. See also regulations from the Norwegian Maritime Directorate and other relevant provisions. the location of equipment that emits heat. When installing built-in light fittings. such as lighting equipment. the fire safety characteristics must therefore be assessed. In particular.§ 30 Mechanical and fire safety features The electrical installation shall be constructed so that the mechanical and fire safety features of the ship or floating or mobile installation are not impaired. must not impede ventilation. Re § 31 This provision means for example that equipment must be connected and used according to the manufacturer’s instructions. Cables shall be installed so that any fires in cables or cable penetrations do not result in emergency escape routes being blocked.
Examples of conditions that may be assessed are: – – vibrations climatic conditions. equipment with flexible cords with approved strain relief may be connected in a junction box. If a connection by plug and socket-outlet is not suitable. Adaptor fittings to enable the use of plugs using rated current below that of the socket-outlet are prohibited. The transition between fixed cable to flexible cords for mobile equipment is generally achieved by the use of socket-outlets and plugs. Flexible cables for Class II equipment (double-insulated) are not required to have an earth conductor. Flexible cables without an earth conductor are required to have a plug without an earthing contact.§ 32 Design of electrical equipment All electrical equipment that is part of or is intended to be connected to an installation shall be designed to suit the purpose and function of the installation. This does not apply to equipment designed to be moved during use or for temporary use. Plugs for extensions and branch-off plugs may only be plugged into fixed socket-outlets. Re § 33 The use of flexible cables should be limited and these cables should be as short as possible. for example certain cranes and other lift machinery. Re § 32 The provision means that selected equipment must withstand the existing operating conditions on board ships and floating mobile installations. For fixed motors and equipment that must be connected by a flexible cable in order to be used. but may have an earthing plug. a system Regulations relating to maritime electrical installations 29 . Equipment designed to be moved during use means appliances such as vacuum cleaners and electrical hand tools. Flexible cables are required to be connected in the room where the relevant equipment is used. § 33 Connection by flexible cable Flexible cables with an earth conductor are required to have an earthing plug. Only one cord is to be attached to each plug.
or in special junction boxes with interlocked doors fitted with a switch. The flexible cords must be connected by means of plugs and interlocked socket-outlets specially designed and marked for this purpose. The latter requirement also applies when connecting refrigerated containers to a power source. 30 Regulations relating to maritime electrical installations .voltage of up to 1000 V may be used.
Chapter V – Supplement about safety of fishing vessels of 15 meters in length and over –Precautions against shock. The Norwegian Maritime Directorate has implemented the Directive for fishing vessels of 15 metres in length and over. fire and other hazards of electrical origin. Re Chapter V Chapter V implement Council Directive 97/70 setting up a harmonised safety regime for fishing vessels of 24 metres in length and over. Regulations relating to maritime electrical installations 31 .
between conductors. the fronts of switchboards. Exposed ”live” parts having voltages to earth exceeding a voltage to be specified to the Administation shall not be installed on the front of such switchboards. Electrical apparatus shall be so constructed and so installed that it shall not cause injury when handled or touched in the normal manner. where necessary. Exposed metal parts of such equipment which are not intended to have a voltage but which may have such under fault conditions. root mean square.§ 34 Earthing Exposed permanently fixed metal parts of electrical machines or equipment which are not intended to be ”live”. without danger to attendants. where necessary. The sides and backs and. § 36 Distribution systems 32 Regulations relating to maritime electrical installations . shall be suitably guarded. There shall be nonconducting mats or gratings at the front and rear. shall be earthed. or – they are supplied at a voltage not exceeding 250 V by safety isolating transformers supplying one consuming device only.and emergency switchboards Main and emergency switchboards shall be so arranged as to give easy access as may be needed to apparatus and equipment. or – they are constructed in accordance with the principle of double insulation. Portable electrical equipment shall operate at a safe voltage. autotransformers shall not be used for the purpose of achieving this alternative current voltage. § 35 Main. but which are liable under faults conditions to become ”live” shall be earthed (grounded) unless: – they are supplied at a voltage not exceeding 55 V direct current or 55 V. tools or similar apparatus for use in confined or exceptionally damp spaces where particular risks due to conductivity may exist. The Administation may require additional precautions for portable electric lamps.
– limited and locally earthed systems. See § 12 in these regulations. the Council Directive has no specific requirements for vessels with lenght less than 75 meters. The EU-commission has stated that the national authorities may establish own regulations for these vessels. or – insulation level monitoring device provided the circulation current does not exceed 30 mA under the most unfavourable conditions. When the hull return system is used. the use of: – impressed current cathodic protective systems. under condition approved by the Administration. all final sub-circuits (all circuits fitted after the last protective device) shall be two wire and special precautions shall be taken to the satisfaction of the Administration.The hull return system of distribution shall not be used for power. Re § 36 As regards accepted distribution systems. Regulations relating to maritime electrical installations 33 . heating or lighting in vessels of 75 m in length and over. This requirement does not preclude.
§ 37 Monitoring of insulation level to earth
Where a distribution system, whether primary or secondary, for power, heating or lighting, with no connection to earth is used, a device capable of monitoring the insulation level to earth shall be provided. When the distribution system is in accordance with this, and a voltage exceeding 55 V direct current or 55 V, root mean square, between conductors, is used, a device capable of continous monitoring the insulation level to earth and of giving an audible or visual indication of abnormally low insulation values shall be provided. Distribution systems which are supplied at a voltage not exceeding 250 V direct current or 250 V, root mean square, between conductors and which are limited in extent, may comply with the first section of this paragraph, subject to the satisfaction of the Administation.
§ 38 Cables
Except as permitted by the Administration in exceptional circumstances, all metal sheaths and armour of cables shall be electrically continous and shall be earthed. All electrical cables shall be at least of a flame-retardant type and shall be so installed as not to impair their original flameretarding properties. The Administration may permit the use of special types of cables when necessary for particular applications, such as radio frequency cables, which do not comply with the foregoing. Cables and wiring serving essential or emergency power, lighting, internal communications or signals shall as far as practicable be routed clear of galleys, machinery spaces of category A and other high fire risk areas and laundries, fish handling and fish processing spaces and other spaces where there is a high moisture content. Cables connecting fire pumps to the emergency switchboard shall be of a fire-resistant type where they pass through high fire risk areas. Where practicable all such cables should be run in such a manner as to preclude their being rendered unserviceable by heating of the bulkheads that may be caused by a fire in adjacent space. Where cables which are installed in space where the risk of fire or explosion exists in the event of an electrical fault, special precautions against such risks shall be taken to the satisfaction of the Administration. Wiring shall be supported in such a manner as to avoid chafing or other damage. Terminations and joints in all conductors shall be made such that they retain the original electrical, mechanical, flameretarding and, where necessary, fire-resisting properties of the cable. Cables installed in refrigerated compartments shall be suitable for low temperatures and high humidity. Re § 38 Machinery spaces category A: Rooms containing combustion engines used for: – – either main propulsion, or other purposes when such engines has a total capacity not less than 375 kW, or containing oilburners or other oilburning equipment.
§ 39 Protection
Circuits shall be protected against short circuit. Circuits shall also be protected against overload, except in accordance with regulation 13 (about steering systems) or where the Administration may exceptionally otherwise permit. The rating or appropriate setting of the overload protective device for each circuit shall be permanently indicated at the location of the protectiv device.
§ 40 Lighting fittings
Lighting fittings shall be arranged to prevent temperature rises which could damage the wiring and to prevent surrounding material from becoming excessively hot.
§ 41 Lighting circuits
Lighting or power circuits terminating in a space where the risk of fire or explosion exist shall be provided with isolating switches outside the space.
§ 42 Accumulator batteries
The housing of an accumulator battery shall be constructed and ventilated to the satisfaction of the Administration. Electrical and other equipment which may constitute a source of ignition of flammable vapours shall not be permitted in these compartments except as permitted in § 43. An accumulator battery shall not be located in accomodation spaces unless installed in a hermetically sealed container.
§ 43 Location of electrical equipment
§ 44 Lightning conductors Lightning conductors shall be fitted to all wooden masts or topmasts.In spaces where flammable mixtures are liable to collect and in any compartment assigned principally to the containment of an accumulator battery. and – appropriately certified for safe usage in the dusts. Regulations relating to maritime electrical installations 37 . – of a type which will not ignite the mixture concerned. vapours or gases likely to be encountered. In vessels constructed of non-conductive materials the lightning conductors shall be connected by suitable conductors to a copper plate fixed to the vessel’s hull well below the waterline. – appropriate to the space concerned. no electrical equipment shall be installed unless the Administration is satisfied that it is: – essential for operational purposes.
Chapter VI – Supplement about safety rules and standards for passenger ships. 38 Regulations relating to maritime electrical installations . (R. Re Chapter VI Chapter VI implements those parts of Council Directive 98/18/EC on safety rules and standards for passenger ships concerning electrical installations.) refers to corresponding regulations in SOLAS 1974 and later amendments (chapter II-1 construction-subdivision and stability. machinery and electrical installations).
Exposed metal parts of electrical machines or equipments which are not intended to be live but which are liable under faults conditions to become live shall be earthed unless the machine or equipment are: – supplied at a voltage not exeeding 50 V direct current or 50 V. fire and other hazards of electrical origin (R 45) New class B. Exposed live parts having voltages to earth exceeding the voltage specified under 1. 5. nonconducting mats or gratings shall be provided at the front and rear of the switchboard. where necessary. the front of switchboards shall be suitably guarded. 3.2 All electrical cables and wiring external to equipment shall be at least of a flame-retarding properties. 5. which do not comply with the foregoing. or – constructed in accordance with the principle of double insulation.1 All metal sheaths and armour of cables shall be electrically continuous and shall be earthed.§ 45 Precautions against shock. or – supplied at a voltage not exceeding 250 V by safety isolating transformers supplying only one consuming device. a device capable of monitoring the insulation level to earth and giving an audible or visual indication of abnormally low insulation values shall be provided.1 shall not be installed on the front of such switchboards. Regulations relating to maritime electrical installations 39 . 2. The sides and the rear and. In distribution systems with no connection to earth. C and D and existing class B ships: 1. Where necessary. Where necessary for particular applications the Administration of the flag State may permit the use of special type of cables such as radio frequency cables. auto-transformers shall not be used for the purpose of achieving the voltage. All electrical apparatus shall be so constructed and so installed as not to cause injury when handled or touched in the normal manner. betveen conductors. root mean square.
1998) shall be approved to the Administration of the flag State having regard to the recommendations developed by the IMO.New Class B.(Electric and electro-hydraulic steering gear) New Class B. where necessary. 8. 6. mechanical flame-retarding and. and to prevent surrounding material from becoming excessively hot. and compartments used primarily for their accomondation shall be properly constructed and efficiently ventilated.1 Accumulator batteries shall be suitably housed. Re § 45 Implements part II-1/D/5 of the Council Directive Re § 45.9.3 40 Regulations relating to maritime electrical installations .1 Each separate circuit shall be protected against short circuit and against overload. cabling for emergency alarms and public address systems installed on or after the date referred in Article 14 (1) of the Directive (01. Distribution systems shall be so arranged that fire in any main vertical zone. C and D and existing Class B ships: 7. will not interfere with services essential for safety in any other such zone. In new and existing ro-ro passenger ships. C and D ships: 5. Cables and wiring shall be installed and supported in such a manner as to avoid chafing or other damage. New Class B.5. Where practicable all such cables should be run in such a manner as to preclude their being rendered unserviceable by heating of the bulkhead that may be caused by a fire in an adjacent space. fire resisting. machinery spaces of category A and their casings and other high fire risk areas. except as permitted in regulation II-I/C/6 and II-1/C/ 7.07. laundries.2 Lighting fittings shall be so arranged as to prevent temperature rises which could damage the cables and wiring.2 Electrical or other equipment which may constitute a source of ignition of flammable vapours shall not be permitted in these compartments. C and D ships: 7. Cables connecting fire pumps to the emergency switchboard shall be of a fire-resistant type where they pass through high fire risk areas. This requirement will be met if main and emergency feeders passing through any such zone are separated both vertically and horizontally as wide as is practicable. 9. lighting. as is defined in regulation II-2/A/2. internal communications or signals shall so far as practicable be routed clear of galleys. Terminations and joints in all conductors shall be so made as to retain the original electrical.3 Cables and wiring serving essential or emergency power. 8.
Regulations relating to maritime electrical installations 41 . see § 38.Definition of ”machinery space of category A”.
1 and . the main steering system may be fed by one circuit from the main switchboard. When an auxiliary steering gear required by regulation 6. including starting current. Where such an electric motor primarily intended for other services is arranged to power such an auxiliary steering system. Re § 46 42 Regulations relating to maritime electrical installations .4. if provided. shall be for not less than twice the full load current of the motor or circuit so protected.4. C and D and existing Class B ships: 1. C and D ships: The alarm required in this paragraph shall be both audiable and visual and shall be situated in a conspicuous position in the main machinery space or control room from which the main machinery is normally controlled and as may be required by regulation 6 of part E of this chapter.§ 46 Additional requirements for electric and electrohydraulic steering gear (R 30) New Class B. and shall be arranged to permit the passage of the appropriate starting currents. New Class B.3(R 29) to be operated by power is not electrically powered or is powered by an electric motor primarily intended for other services. New Class B. Each electric or electro-hydraulic steering system comprising one or more power units shall be served by at least two exclusive circuits fed directly from the main switchboard.2 (R 29) applicable to auxiliary steering system. C and D and existing Class B ships: 3. Means for indicating that the motors of electric and electro-hydraulic steering gear are running shall be installed on the navigating bridge and at a suitable main machinery control position. C and D ships: 2. Protection against excess current. the requirements of paragraph . however. if satisfied with the protection arrangement together with the requirements of regulation 6. Short circuit protection and an overload alarm shall be provided for steering gear electic and electro-hydraulic circuits and motors. An auxiliary electric or electro-hydraulic steering system associated with a main electric or electro-hydraulic steering system may be connected to one of the circuits supplying this main steering system. The circuits supplying an electric or electro-hydraulic steering system shall have adequate rating for supplying all motors which can be simultaneously connected to them and may be required to operate simultaneously. one of the circuits may be supplied through the emergency switchboard. New Class B.3.3 may be waived by the Administation of the Flag State.
if the installation of electrical equipment and wiring at less than 450 mm above the deck and platform is necessary for the safe operation of the ship. in particular. having regard to other possible sources of ignition New Class B. Precautions against ignition of flammable vapours – On any deck or platform. equipment which may constitute a source of ignition of flammable vapours and. if installed in an exhaust ventilation duct. – Electrical equipment and wiring. on which vehicles are carried and on which explosive vapours might be expected to accumulate. if fitted. Re § 47 Implements part II-2/B/14 of the Council Directive Regulations relating to maritime electrical installations 43 . except platforms with openings of sufficient size permitting penetration of petrol gases downwards. shall be of a type approved for use in explosive petrol and air mixture and the outlet from any exhaust duct shall be sited in a safe position. C and D ships: Additional provisions applicable only to special category spaces below the bulkhead deck 2. Electrical equipment installed at more than 450 mm above the deck or platform shall be of a type so enclosed and protected as to prevent the escape of sparks. if installed in an exhaust ventilation duct. C and D ships: 1. having regard to other possible sources of ignition. shall be of a type approved for use in explosive petrol and air mixtures and the outlet from any exhaust duct shall be sited in a safe position. electrical equipment and wiring. However.Implements part II-1/C/7 of the Council Directive § 47 Protection of special category spaces (R 37) New Class B. shall be of a type suitable for use in explosive petrol and air mixtures. if fitted. shall be installed at least 450 mm above the deck or platform. – Electrical equipment and wiring. Other equipment which may constitute a source of ignition of flammable vapours shall not be permitted. Precautions against ignition of flammable vapours: – Electrical equipment and wiring. such electrical equipment and wiring may be installed provided that it is of a certified safe type approved for use in an explosive petrol and air mixture.
Norway or whoever is authorized to act on its behalf is responsible for supervision to ensure that these Regulations are complied with. Norway shall at all times have free access to the installations under its supervision and may require any information necessary for the exercise of its duties to be supplied. § 48 Supervision The shipowner shall submit a request for inspection / supervision of new and existing installations in accordance with specific guidelines to the Directorate for Fire and Electrical Safety. penalties. cf.Chapter VII – Supervision. Spot checks on old and new installations including examination of documentation The issue of information and instructions for safety work Formal permission to put installations into operation Authorization to monitor compliance with these regulations was granted to the following classification societies as of the date when these regulations were laid down: – – American Bureau of Shipping. etc. 44 Regulations relating to maritime electrical installations . The Directorate for Fire and Electrical Safety. Bureau Veritas. The Directorate for Fire and Electrical Safety. Norway and are included in an appendix to these regulations. Re § 48 Further provisions concerning when notification is to be submitted are laid down in an agreement between the Norwegian Maritime Directorate and the Directorate for Fire and Electrical Safety. Norway in accordance with a scale determined by the Crown. Norway or whoever it so authorizes. 4 of 24 May 1929 relating to Supervision of Electrical Installations and Electrical Equipment. The supervision is carried out by the following measures: – – – – – The issue of Regulations containing minimum requirement for the construction and operation of electrical installations System control to ensure that the owner provides for the construction and operation of the installation to be in accordance with the regulations in force. A charge shall be paid for the supervision provided by the Directorate for Fire and Electrical Safety. appeal. section 5 of Act No.
These and other agents or persons may monitor compliance on behalf of the Directorate for Fire and Electrical Safety. and Lloyds Register of Shipping. Norway by special agreement.– – – Det norske Veritas. Norway and the Norwegian Maritime Directorate. For the collection of supervision fees. see the agreement between the Directorate for Fire and Electrical Safety. Any application for exemption must be based on a risk assessment. Norway. Germanischer Lloyd. Norway so basic that granting exemption from them will only be relevant in very special cases. or whoever is authorized to act on its behalf. For vessels and floating or mobile installations constructed abroad. Re § 50 The security requirements laid down in the regulations are in the opinion of the Directorate for Fire and Electrical Safety. With regard to how monitoring is to be carried out. see guidelines to § 2. issues instructions and takes other individual decisions as necessary for the implementation of the provisions laid down in or pursuant to these regulations. As a rule. exemption shall be given in writing. § 50 Exemption The Directorate for Fire and Electrical Safety. Norway may grant exemption from these Regulations if special circumstances so indicate. Regulations relating to maritime electrical installations 45 . see section 4 of the Act of 24 May 1929 relating to Supervision of Electrical Installations and Electrical Equipment. § 49 Decision The Directorate for Fire and Electrical Safety.
Norway are to be lodged with the Ministry of Labour and Government Administration. Norway are to be lodged with the Directorate for Fire and Electrical Safety. The appeal is to be submitted to the administrative agency responsible for making the decision. Re § 51 Appeals against decisions made by bodies subordinate to the Directorate for Fire and Electrical Safety. 46 Regulations relating to maritime electrical installations . Appeals against decisions made by the Directorate for Fire and Electrical Safety. The time limit for lodging appeals is three weeks from the date notification of the decision has reached the relevant party. Norway.§ 51 Right of appeal Decisions adopted pursuant to these Regulations may be appealed under the Act of 10 February 1967 relating to the procedure in administrative cases (Public Administration Act).
§ 52 Penal provision Contravention of these Regulations or a decision adopted pursuant to the Regulations is punishable under section 14 of the Act of 24 May 1929 relating to Supervision of Electrical Installations and Electrical Equipment. the Regulation for Electrical Installations – Maritime Installations of 1 March 1990 is repealed. Maritime electrical installations may nonetheless be designed and constructed according to the provisions in the Regulation for Electrical Installations – Maritime Installations of 1 March 1990 until 1 January 2003. Regulations relating to maritime electrical installations 47 . § 53 Entry into force. Maritime electrical installations designed and constructed according to the provisions in the Regulations for Electrical Installations-Maritime Installations of 1 March. As of the same date. These Regulations becomes operative on 1 January 2002. Transitional provisions. Repeal of other regulations. may be maintained in accordence with this regulations.
Annex I – Examples of conformity declarations Example of declaration of conformity by electrical installation contractor Declaration that construction is in accordance with the Regulations relating to Maritime Electrical Installations (see section 6) Electrical installation contractor: ________________________________________________________________ Address: ________________________________________________________________ Type of installation: ________________________________________________________________ Address: ________________________________________________________________ Standards applied (see section 5 of the Regulations): No.Name Other technical specifications: 48 Regulations relating to maritime electrical installations .
Documentation in accordance with section 6 has been delivered to the shipowner. Place/DateSignature/Stamp Name of undersigned:Job title: (In block capitals) ________________________________________________________________ Example of declaration of conformity from designer.________________________________________________________________ The undersigned declares that this installation has been inspected (see section 7) and meets the safety requirements in Chapter IV of the Regulations. Declaration that design is in accordance with the Regulations relating to Maritime Electrical Installations (see section 6) Designed by: ________________________________________________________________ Address: Regulations relating to maritime electrical installations 49 .
Name Other technical specifications: ________________________________________________________________ The undersigned declares that this installation has been designed to meet the safety requirements in Chapter IV of the Regulations. Documentation in accordance with section 6 has been delivered to the shipowner.________________________________________________________________ Type of installation: ________________________________________________________________ Address: ________________________________________________________________ Standards applied (see section 5 of the Regulations): No. Place/DateSignature/Stamp 50 Regulations relating to maritime electrical installations .
Name of undersigned:Job title: (In block capitals) ________________________________________________________________ Regulations relating to maritime electrical installations 51 .
However. essential services etc. System design – general 1. Starting arrangements for each prime mover of an emergency generator. Starting arrangements for emergency generator. Starting arrangement for propulsion engines Starting arrangements for propulsion engine(s) are to have at least two batteries installed in separate boxes or lockers. There may be ways of meeting the legal functional requirements of the Regulations other than those stated in standards and guides. If the batteries are installed in a common battery room they must not be installed above each other. Prime movers for emergency generators and emergency fire pumps may not have a charging unit for their starting batteries which is based on a charging generator run by the prime mover itself. The starting arrangements for a single propulsion engine must have a changeover switch for alternative connection of the starting motor to either of the two batteries.101. Corrosion During both the construction and installation of electrical equipment special considerations is to be given when choosing materials to avoid corrosion due to different electrolytic potential. The text of this annex is a guide and thus not legally binding. The batteries are to have separate circuits installed as far apart as practical.10) 2.Annex II Supplements to the regulations This document is to consider as a supplement to the IEC 60092-serie (NEK 410:2000 in Norwegian). Definitions and general requirements Combinations of materials. if the guide and the standards are used. or in a battery room. and may be used to meet the requirements in the Regulations Relating to Maritime Electrical Installations. emergency fire pump or other prime movers of important services are to have a separate battery. 1. Alternative connection of one battery to both (or all) propulsion engines may be accepted. 52 Regulations relating to maritime electrical installations . 2. the legal requirements of the Regulations will be presumed met. or on common shelves. which is not used for other purposes.2. (NEK 410/IEC 60092. The starting arrangement for two or more propulsion engines must be divided between the two batteries and connected by separate circuits.
(NEK/IEC 60092. Starting arrangements for a prime mover not intended for emergency use Starting arrangements for a prime mover.2. 5.8. is to be by a separate battery or to be connected by a separate circuit to batteries for propulsion engines. emergency fire pumps and similar. Reduction of capacity due to ageing. NEK/IEC 60092. 4. If starter batteries are used also for supplying other services. the capacity is to be increased accordingly.6.201.6.2 means that there shall be equipment for automatic disconnection (tripping) of non-essential services to prevent disconnection of the generator in the event of overload.1) 6. each attempt of minimum 10 seconds duration: – – – 12 starts for each reversible propulsion engine. 6 starts for each non-reversible propulsion engine connected to a variable pitch propeller or other device enabling the engine to be started with no load.202.6. Chapter II-1 regulation 44 concerning requirements apply to the starting arrangements for emergency generating sets. Starting arrangements for more than one prime mover Starting arrangements for more than one prime mover are to be from at least two batteries as for propulsion engines. When determining the battery capacity. Batteries for propulsion engines may be used. the following must also be taken into consideration: – – – – The battery is normally not fully charged.201.See amendment to SOLAS 1974.2. Reduction of capacity due to rapid discharge. Capacity of batteries Each battery is to be of sufficient capacity for at least the following number of start attempts of the prime mover which it normally supplies. Number and capacity of power units The requirements in NEK 410/IEC 60092.4 makes the same demands on starting arrangements for prime movers of important services as for emergency generators.201.2. 3 starts for each prime mover for generators. not intended for emergency use. Reduction of capacity due to high or low temperatures. See also NEK 410/IEC 60092. 3.3 Regulations relating to maritime electrical installations 53 .
Three-phase AC installations are to be provided with a phase-sequence indicator and a phase-sequence changeover switch on the shore connection cabinet or on the switchboard. (NEK 410/IEC 60092.1).7. The cables to such services are to be separated along their whole length as far as practicable. when the flexible cable from shore is not permanently connected or cannot be connected by means of an appliance connector on board.14). Parallel operation in installations with earthed neutral When generators are run in parallel in installations with the neutral earthed. Shore connection A shore connection is to have an interlocked switch or a changeover arrangement to prevent connection of the generator circuit and the shore connection circuit. Wherever possible. Reference is made to guidance from the generator manufacturer. reference is made to relevant regulations in NEK 400. it is to be ensured that the equalising current caused by harmonics does not exceed harmful values.1) 54 Regulations relating to maritime electrical installations . Degree of protection Stoves.3) 9. Duplicated essential services Two or more essential services for the same purpose are to be supplied from at least two distribution switchboards.3. A phase-sequence changeover switch may be omitted on ships having an electrician.201.201. Distribution systems with neutral earthed (TNsystems) Concerning the description of the systems and the current rating of the neutral conductor (N-conductor).1.7. (NEK/IEC 60092. The collision zone is a zone distanced from the ship’s side of width 1/5 that of the ship at any place.201. ovens and similar equipment in galleys. (NEK 410/IEC 60092.11 10.7. the cables are not to be installed in a collision zone.201. 8. (NEK/IEC 60092. Each of these is to be supplied by a separate supply circuit from the main switchboard or from the emergency switchboard. 11. laundries etc may be accepted with IP 22 when additionally protected against water splashing off the floor and the bulkhead during hose washing.201. however.26 and 307. (NEK 410/IEC 60092.
7. Low-voltage switchgear and controlgear assemblies 1. Return power protection Return power protection relays for generators arranged for parallel operation is normally to have a time delay of 3 -10 seconds. (NEK 410/IEC 60092. When such items are installed behind front doors.1) 3.9.302.202. (NEK 410/IEC 60092. System design – protection 1.7. except disconnectors.101) Regulations relating to maritime electrical installations 55 . are to be installed easily accessible behind hinged doors. (NEK 410/IEC 60092. Other equipment which are to be operated or maintained.202. Equipment – generators and motors 1.301.3. Instruments – location Instruments and control gear. bare live parts are to be protected against inadvertent touching by means of fixed covers of at least flameretardant material. Voltage regulation The requirements for voltage regulators must as far as possible apply to generators with capacity less than 50 kVA.6.2. (NEK 410/IEC 60092. may be used as generator protection when the generator capacity is less than 35 kVA.1) 2.8. provided that the voltage is within the range 85 – 110 % of the rate voltage.202.6. Protection of generators – additional requirements for circuit-breakers Miniature circuit breakers having release characteristics adjusted to the nominal current of the generator.101) 2. Protection of generators – reconnection Short-circuit. These covers are to comply with the requirements for enclosure IP 20.8.4) 5. Instrumentation – secondary distribution system Each secondary distribution system is to have one voltmeter. (NEK 410/IEC 60092. (NEK 410/IEC 60092. are to be installed on the front of the switchboard. overcurrent and reverse-power relays are to be such that it is possible to reconnect the circuit breaker within 30 seconds.1) 4.2.
302.15.4) 4.305.101) 6.) Reference to IEC 60439. other circuits for supply and circuits for important consumers are to have a separate control cubicle to prevent the spread of arcing from/to other parts of the installation.3.7.3 and 401. For batteries whose capacity is taken into consideration when determining the output and number of power supply units.303. (NEK 410/IEC 60092. Ministry of the Environment has established regulations for the use of PCB and products containing PCB. Transformers – type of connection Y/Y-connected transformers have relatively high values of the zerosequence reactances and should therefore be avoided in installations having directly earthed neutral if the requirement concerning disconnection may be difficult to fulfil. Separation of generator cubicles and other cubicles Generatorcircuits.101.303. Equipment – accumulator batteries 1. with liquids containing polychlorinated biphenyl's (PCB) are not permitted. (NEK/ IEC 60092. (NEK 410/IEC 60092. condensatores etc.6.3) 2. Equipment – transformers for effect and lighting 1.6) 56 Regulations relating to maritime electrical installations . two mutually independent-charging devices with separate supply circuits from the main switchboard may be required.2) 7. Equipment containing PCB Electrical equipment such as transformers. Norway is directed to survey that some of these requirements are complied with.302. Instruments – construction Normal full load values shall be marked in red on the instrument scale for all indicating instruments.7 and IEC 60439 appendix D.7.7.7. (NEK 410/IEC 60092. converters. Charging devices for accumulator batteries Batteries are to have suitable automatic charging devices. (NEK 410/IEC 60092. (Partitions between the cubicles are at least to be of flame-retardant material. By suitable charging device it is meant that the charging device is to be capable of keeping the battery fully charged as far as possible at all times. The Directorate for Fire and Electrical Safety.
however. Installations in charging stations are normally to be of explosion proof design. Reference is made to relevant regulations in NEK 400. (NEK 410/IEC 60092. when in the open position. (NEK 410/IEC 60092. Equipment – heating and cooking appliances 1. must not obstruct passage way. The excess-temperature protection is to be located at that place where the highest temperature occurs. Installation and test of completed installation 1. Such a charging station is understood to be a separate room or a limited part of a larger room. Regulations relating to maritime electrical installations 57 . Other types may. Hot air equipment Hot air equipment is. Reference is made to relevant regulations in NEK 400. Switchboard doors. e. also to have thermostats.8. Heating cable installations Heating cable installations are normally to have earth leakage circuit breakers or earth leakage relays with tripping not above 30 mA. (NEK 410/IEC 60092.307) 9.11) 2.307) 3. this does not apply if the batteries are completely sealed. a cargo hold. However. Switchboards – passage way In front of main switchboards there is to be a free height of at least 2 m. Space Heaters Space heaters may be one of the following types – – – convector heaters panel heaters heaters with ribs Portable fan heaters are not permitted.401.g. be allowed after consideration in each case. Reference to relevant regulations in NEK 400. This limited part of the room is to have a base of at least the area occupied by the trucks. (NEK 410/IEC 60092. Where this is necessary for operational reasons tripping currents up to 300 mA may be permitted if special measures are taken to avoid dangerous exposure to live parts.307) 2. in addition to excess temperature protection. Charging stations Batteries for trucks are to be charged in charging stations.
lockers and boxes for batteries are to be used for this purpose only. (NEK 410/IEC 60092.401. ladders. to cause the temperature of any support or adjacent combustible materials to rise above 80 °C.g.Socket-outlets interlocked with switchgear. special requirements may be laid down. They are to be rigidly fixed to the deck at one point only. Cable bridges and ladders are to be made of steel.31) 6.401.31) 7.31) 5. carrying water pipes.31) 58 Regulations relating to maritime electrical installations . They are to have enclosures at least IP 56 or IP 44. Mechanical strength. special attention should be paid to electrodynamic stresses in case of a short-circuit. At other points they are to have sliding supports. oil pipes or other pipes. (NEK 410/IEC 60092. depending on the location. pipes and ducts along the main deck are to be divided into sections. temperature variations etc. Cable bridges – protection against corrosion. e. rails and similar are not normally permitted as supports for cables. In areas where equipment may be exposed to heavy corrosive ambient conditions. Cable bridges – division into sections Cable bridges. Cable bridges and ladders must be able to withstand any mechanical and electro-dynamic stresses. which may occur. (NEK 410/IEC 60092. (NEK 410/IEC 60092. (NEK 410/IEC 60092.401. for connection of the charging cables can be installed.401. cable conduits and ducts are not to be used for other purposes.17) 4. Such pipes. under any circumstances. Accumulator batteries – location Rooms.17) 3. On open decks and in cargo holds the corrosion protection is normally to be hot-dip galvanizing. which have temperature classes above 85 °C. (NEK 410/IEC 60092. changing load conditions. Cable bridges – expansion and contraction Cable bridges and ladders are to be constructed and installed in such a way that they do not absorb forces or transfer stresses caused by the ship’s movements. When deciding the dimensions of cable bridges and ladders intended for single-core cables. are not permitted to be installed on combustible supports. Cables and wires are not. Cable-bridges. Cable bridges Cables.401. and are to be protected against corrosion.401.
35) 9. At other points the distance between the clamps must not exceed the values in the following table: External diameter of cable (mm) Above Up to Maximum spacing of fixing points (mm) – Cables without metal braid or armour (also cables with lead sheat only) 200 250 300 350 400 Cables with copper. This also applies to cables at conduit outlets and similar in connection boxes. The thickness is to be at least 4 mm.5 mm.401.8. Insulating sleeving. The wall thickness of the protection pipes is to be at least 2. which have flammable conductor insulation. Cable cores are to have a special insulation of at least flame-retardant material if they are likely to be subject to mechanical stresses once the core insulation has been stripped back.2) 10. Cores.401. Mechanical protection of cables The thickness of the protection covers is to be at least 4 mm.35. Fixing of cables The requirement concerning fixing can normally be fulfilled when the cables are clamped as follows: – For cables entering enclosures and conduits. the nearest clamp is to be placed at a maximum distance of 10 times the diameter of the cable concerned from the entry. bronze or steel wire braid or armour Mineral insulated cables with copper or stainless steel sheath 8 8 13 20 30 13 20 30 250 300 350 400 450 300 370 450 450 450 (NEK 410/IEC 60092. terminal boards etc. are also to have flame retardant insulating sleeving if the length of the tail exceeds 20 cm. Insulating sleeving must have temperature resistance corresponding at least to the temperature class of the cable. (NEK 410/IEC 60092. Cables laid on aluminium supports may have a corresponding protection of aluminium. Protection against mechanical stresses.38) Regulations relating to maritime electrical installations 59 . (NEK 410/IEC 60092.401.
0 3. Conduits with internal diameter exceeding 304.8 2.5 1.8 1.5 1. the corrosion protection is to be hot-dip galvanizing or equivalent. Conduits are to have the following minimum average wall thickness: External diameter of the pipe in mm 16 20 25 32 40 50 63 Minimum wall thickness in mm External diameter of the pipe in inches 5/8 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4 5 Minimum wall thickness in mm 1.5 1.2 3.and fuel oil tanks Pipes and conduits on open decks and in water and fuel oil tanks are to have the following minimum average wall thickness: 60 Regulations relating to maritime electrical installations . This also applies to ducts.6 1. Ducts are to have similar minimum average wall thickness corresponding to the external diameter of the duct. and are to be protected against corrosion.2 3.6 1. these may be made of aluminium. 12.5 1. which have a similar equivalent diameter. When the conduits and ducts have aluminium supports.0 2.11.4 3.9 1.8 mm (12 inches) are not permitted.8 1. On open decks and in cargo holds. Mechanical strength Cable conduits and ducts are to be made of steel.0 3.6 Conduits of larger diameter are to have a minimum average wall thickness of at least 4 mm.6 1. Cable conduits and ducts – Protection against corrosion. Wall thickness on open decks and in water.
contraction. single cables for lamps. fastening and jointing.0 4. Plastic conduit installation Plastic conduits are only permitted in dry areas in accommodation quarters. may be installed in such insulation provided that documentation shows adequate heat dispersion. which are not easy to remove. socket-outlets and switches in dry areas may be installed behind wall panels. 16. (NEK 410/IEC 60092. However.Internal diameter of pipe. bulkheads or the hull.40) 13.5 5. (NEK 410/IEC 60092.401.g. The cables are to be directly available when the panel or deck-plating is removed. mm 4. For this installation special precautions are to be taken concerning expansion. Such panels or deck-platings should be able to be dismantled without damaging the interior. The requirements that panels or deck platings. However cables in lighting final sub-circuits e. are to be “easily removable” means that the panels or deck platings have to be hinged or fixed by screws in such a way that they can be dismantled without difficulty. Regulations relating to maritime electrical installations 61 .41) 14.8 Minimum wall thickness.5 Ducts are to have similar wall thickness corresponding to the internal equivalent diameter of the duct.401. 15.0 ≤ D ≤ 152. these are to be easily removable.41) Reference also made to relevant regulations in NEK 400. mm D ≤ 57 57. Installation of cables in thermal insulation Cables are not to be installed in or covered by thermal insulation.401. (NEK 410/IEC 60092.4 152. but they may be run the shortest way through such insulation. Two concentric pipes should be used through tanks containing combustible liquids and in cargo holds containing combustible loads. are to be located at the inside of the thermal insulation.4 ≤ D ≤ 304. Terminations for conductors – Stripping and termination Conductor insulation and sheaths are not to be stripped back more than is absolutely necessary. Cables laid along outer-decks.41) Reference is made to relevant regulations in NEK 400. in cabins. Cables behind panels or deck-platings When cables are laid behind panels or deck-platings. (NEK 410/IEC 60092.401.
Branching off and splicing of cables – connection boxes In dry areas in accommodation quarter’s boxes may be concealed behind wall and ceiling panels. if the risk of leakage from pipes etc. The covers of the openings are to be fixed in such a way that they can be easily removed without dismounting other equipment. is low and the wall etc.46) 17. transformers.000 ohms 20.401. The panels are to have adjustable openings giving easy access to the boxes. (NEK 410/IEC 60092.401.000 ohms 10. 19. The inspection body may accept a lower degree of protection. an insulation resistance of at least: 3 × rated voltage in V -------------------------------------------------------------. are of incombustible material. a higher measuring voltage than 500 V is not required for installations with an operating voltage up to 1000 V. Such boxes shall normally have a degree of protection IP44. The location is then to be plainly indicated outside the panel. but not less than 250 V. etc. however. However.000 ohms In battery circuits the insulation resistance between each battery-pole and earth is to be at least 250 ohms per V of the nominal voltage. Testing – insulation resistance Machines. have a lower insulation resistance.[ MΩ ] Output in kVA + 1000 Heating appliances may. 62 Regulations relating to maritime electrical installations .000 ohms 30. appliances and other apparatus are to have. at both ambient and operating temperatures.Cables are to be terminated in a box or a board.48) 18. at normal operating temperature. Measurement of insulation resistance Insulation resistance measurements are to be carried out by using direct current at a voltage of at least twice the nominal voltage of the installation. (NEK 410/ IEC 60092. but not below the following values: – – Appliances without earth connection: Appliances with earth connection: inntil 5 kW 5 – 10 kW 10 – 20 kW 20 – 50 kW over 50 kW 50 000 ohms 50 000 ohms 40. suitable for the purpose.
3 An approved warning notice is to be fixed in a visible position at the high-voltage equipment and at places where the high voltage cables are accessible.2. These additional requirements for high -voltage installations is based upon IEC-Publication 92-503(1975) «AC Supply system. 2. are to be located so that they are not accessible to unauthorized persons.1 On systems designed with an insulated neutral or with a highresistance-earthed neutral. A part of an installation. which are to be operated.C. dredgers. In addition the following Regulations relating to maritime electrical installations 63 .55) 10. 2.3. floating cranes etc. such as thyristors and diodes while measuring. mobile drilling platforms. or examined. Scope The requirements in this section apply to high voltage AC installations with a system voltage above 1 kV up to and including 11 kV in addition to the general requirements for installations on board ships. is a part of an installation. with voltages above 1 kV up to and including ll kV.with the additional requirements laid down in this section.2. General requirements 2. (NEK 410/IEC 60092. 2.During insulation measurement care must be taken to ensure that equipment which cannot withstand the measuring voltage is not damaged. which has an earthed screen. are to be located and protected in such a way that they may be operated or examined easily and without danger.3 Insulation resistance 2.2 Live parts.2. supply systems with voltage in range above 1 kV up to and including 11 kV 1. which is made safe to touch.1 Parts of the installation.401. earthed enclosure or approved insulation. Special features – A. It might be necessary to short circuit electronic equipment.1 Design All equipment is normally to be designed and tested according to relevant IEC-standards or to equivalent and recognised national standards. 2. 2. Approved warning signboards are to be placed at suitable locations both inside high-voltage rooms and at the entrance. control of the insulation level must be possible.2 Protection against live parts 2. The inspection body may consider the use of higher voltage. The design must be for the special environmental conditions found onboard. which are not made safe to touch.
2. automatic disconnection of circuits in the event of an insulation fault is to be arranged.4 Clearance and creepage distances 2. Other minimum clearances upon which approval may be based are as follows: Nominal voltage (V) Minimum clearance. Satisfactory creepage distances are given in the following tables: Main switchboards and generators: 64 Regulations relating to maritime electrical installations .1 Uninsulated conductors which are not earthed shall be installed with a clearance from one another and from other conductive objects and from walls. ceilings or their own protective covers of at least 5 cm + 0.2 All equipment is to have satisfactory creepage distances.5 cm for each 1 kV of operating voltage unless voltage tests carried out according to Norwegian or other similar standards shows that the insulation is adequate with less clearance.4. The Directorate for Fire and Electrical Safety.must be established: – – a fixed monitoring device giving an alarm in the event of an insulation fault or earth fault in the installation.3. or a device for automatic disconnection of the circuit when an earth fault occurs.2 On systems designed with directly earthed neutral or low resistance earthed neutral. Norway may after consideration of each case base the approval on other minimum clearances. For lower earth fault current alarm must be given. This earth fault protection is to operate at 1/3 of the maximum stipulated earth fault current. 2.4. distance (mm) for Main switchboards Other equipment and generators < 1 100 < 3 300 < 6 600 £ 11 000 14*) 32 60 100 14 26 50 80 *) 25 mm is required for busbars and other bare conductors in main switchboards 2.
In other locations earthing and short-circuiting may be executed by means of fixed earthing switches.5. where reliable inter-locking is not arranged. portable earthing equipment or other suitable earthing equipment.Nominal voltage (V) Minimum creepage distance (mm) for proof tracking index 300 V < 1 100 < 3 300 < 6 600 ≤ 11 000 26*) 63 113 183 375 V 24*) 59 108 175 500 V 22*) 53 99 162 > 600 V 20*) 48 150 *) 35-mm minimum is required for bus bars and other bare conductors in main switchboards. Earthing 2. Regulations relating to maritime electrical installations 65 .2 Arrangements for earthing when working on an installation are to be established in accordance with the requirements laid down in the Safety regulations for high-voltage installation. The current density shall not exceed 150 A/mm2 for copper earthing conductors at the maximum earth fault. Other equipment: Nominal voltage (V) Minimum creepage distance (mm) for proof tracking index 300 V < 1 100 < 3 300 < 6 600 ≤ 11 000 18 42 83 146 375 V 17 41 80 140 500 V 15 38 75 130 > 600 V 14 26 70 120 2.1 Earthing conductors are normally to be of copper and are to have a cross section area of at least 30 mm2. At busbars and on all incoming and outgoing circuits on switchboards or similar.5. 2. using fixed earthing switches which have adequate making capacity for operation on system voltage. which may occur. earthing and short-circuiting devices are to be provided.5.
The same applies to other compartments which normally are kept locked.2 – 2. which are accessible for qualified persons only. a degree of IP23 may be accepted. Alternative protection may be considered in each case. 3.26 unless a higher degree of protection is required in item 2. a neutral voltage limiter or direct earthing of the lower voltage system. in rooms.g.7 Over-voltage protection Over-voltage protection is to be arranged for lower voltage systems supplied through transformers from high voltage systems. 2. under the responsibility of the ship’s officers. Alternatively power transformers with a lower degree of protection may be located in a separate room which is locked.4 Switchgear and controlgear assemblies are to have a degree of protection of at least IP32. However.8 Anti-condensation heating Equipment which can be expected to be periodically out of service and which is not located in heated and ventilated rooms is to be provided with a heating element.6. Connection boxes are to have a degree of protection of at least IP 44. The earthing conductor may be connected directly to the earthed enclosure of the transformer or to an earthed support. 2. 2.6.6.6 Enclosures.3 The secondary winding of current and voltage transformers is to be earthed.2.4 2. 2.2 Rotating machines and neutral resistors are to have degree of protection of at least IP 43. The protection device e.6.3 Power transformers are to have a degree of protection of at least IP23 when located in rooms accessible to qualified personnel only and at least IP54 when located elsewhere. is to be fitted at the secondary winding of the transformer. 2.5. Distribution systems and voltages 3.1 Distribution systems The following distribution systems are permitted: 66 Regulations relating to maritime electrical installations .6.6. Machinery spaces will generally be considered as being accessible only to qualified personnel.201.1 Enclosures are to comply at least with the requirements in NEK 410/IEC 60092. The earthing conductor is to be of copper and with a minimum cross-section area of 4 mm2. Earthing switches will be approved according to IEC-Publication 129 (1984). 2. The heating is to be automatically switched on when the equipment is at standstill.
cables. and 3.6. shall be not less than 7.1 If the cooling of generators is arranged by means of water/air heat exchangers these are to be of the double tube type.2 three-phase three-wire with low-resistance earthed neutral. 6. Power sources and power supply installations 4.1.1. which may occur in the event of intermittent earth faults. For systems having insulated neutral.1. the test voltage for the high voltage test.1. separately consider the test voltage. power transformers. 10 and 11 kV.4 three-phase three-wire with the neutral earthed with equipment specially approved by the Directorate for Fire and Electrical Safety. A high resistance earthed neutral: is a system where the neutral is earthed through a resistance with numerical value equal to or somewhat less than 1/3 of the capacitive reactance between phase and earth.2 Maximum system voltages The maximum nominal system voltage permitted is 11 kV. test voltages higher than that for the other systems are required For rotating machines. A low-resistance earthed neutral: is a system where the neutral is earthed through a resistance which limits the earth fault current to a minimum value of 20 % and maximum 100 % of the rated current of the largest generator Insulated neutral: the requirement in this clause of these regulations for higher testvoltages is because of the over-voltages. 4. switch-gear and fuse-gear for use in systems with insulated neutral point. The following nominal system voltages are standardized: 3. 3.1 Generators 4. Regulations relating to maritime electrical installations 67 . The «inspection body» in each case may however.1.5 times the normal voltage between phase and neutral of the system.5 three-phase three-wire with insulated neutral. 3.3 three-phase three-wire with directly earthed neutral. 3.3. 3. Leakage monitoring with alarm is to be provided. 3. For control systems the maximum nominal system voltage permitted is 250 V.3. current and voltage transformers.1. Norway.1 three-phase three-wire with high-resistance earthed neutral. 6.
1 Distribution systems 5.2 Power transformers Special measures may be required to avoid undesirable effects of possible inrushcurrents. 4.g. an arrangement for locking must be provided.1.1. 4. 68 Regulations relating to maritime electrical installations .3 Earthed neutral connections Means for disconnection of each earthed neutral connection is to be provided. Distribution systems.1 The busbars of the main switchboard are to be divided into at least two independent sections. switchboards. This requirement applies to switches being simultaneously disconnected.4. Connections from generators to important services are to be divided between the sections so that safe operation of the ship is ensured even with any one busbar section out of service. or the generator is to have winding temperature detectors which actuate an alarm at the maximum rated winding temperature.1. controlgear 5. 5. water pump or separate fan. an independent auxiliary power system is to be provided for each of the switchboard sections. and without any abnormal voltage drop in the auxiliary power circuit or any abnormal drop of pressure in the hydraulic system used for the switch operation. by disconnection of the generator circuit breaker and deexitation of the generator. e. and disconnect the generator at 10 % over-temperature. if necessary.2 When auxiliary power is used for the cooling system of a generator.2 When auxiliary power is needed for the operation of switches.3 The windings of all rotating machines are to be provided with temperature detectors for monitoring and alarm. it is either to be interlocked so that the generator is disconnected if the auxiliary power fails. If a switch is used for this disconnection.1. 5. 5. 4. a protection device is to be provided to include protection against short-circuit or earth fault in the generator or in the cable connection from the generator to the switchboard. In addition to the general requirements. interconnected by circuit breakers or switches. The auxiliary power system is to have sufficient capacity for at least two operations of each circuit breaker on the system. Over-voltage protection may be required for temperature detector circuits.2 Generator circuits Each generator output circuit is to be connected through a circuitbreaker.
4.1 Switchboards are to be of metal clad construction in accordance with IEC-Publication No. Design and construction 5. 60298 (1990) “AC metal enclosed switchgear and controlgear for rated voltage above 1 kV and up to and including 52 kV”.5 Voltage transformers Voltage transformers are to be provided with fuses on the secondary side. Internal partitions of materials other than metal may be accepted by the Directorate for Product and Electrical Safety after consideration of each case. 5.6 Shore connection circuits and circuits to other units Shore connections and circuits to other units are permitted only with special approval by the Directorate for Fire and Electrical Safety. Switchgear for feeder circuits may be used as motor starters. 5. It is assumed that the overcurrent protection device of the circuit breaker operates within the current range. Certain types of fuses have an insufficient breaking capacity at currents between full-load and short-circuit.7.3 above. The protection system is to include alarm for over-current or overtemperature if a load diversity factor has been used when deciding the current rating of the transformer. The switchgear on the secondary side is to be interlocked with the switchgear on the primary side. Norway.2 If the power transformers are arranged for parallel operation the secondary side circuits are to be provided with switchgear.4 Power transformer circuits 5. 5. 5. only if the switchgear is designed for the starting current and the stipulated number of switching operations. fuses may however be omitted. A fused circuit breaker may be accepted provided that the fuses can be replaced without any hazard to personnel.4. 5.1 Supply circuits to the primary side of transformers are to comply with the requirements in item 5. For the circuit feeding voltage to a generators voltage regulator. with the deviations and supplementary requirements given in the following subclauses. 5. Regulations relating to maritime electrical installations 69 .3 Feeder circuits Feeder circuits are normally to be provided with a circuit breaker.In systems with isolated neutral or high-resistance earthed neutral an alarm may replace disconnection in case of earth fault in the generator or in the cable connection between generator and the switchboard. Fuses are not to be used for overload protection.7 Switchboards.
when in the open position. or withdrawable switchgear in their isolating position. must not obstruct the passageways.6 Except for short connections to instrument transformers.7. Alternative cable-connections may be accepted.7. auxiliary switches etc. Fuses in control and instrumentation circuits requiring inspection while the equipment is in service shall be accessible without any hazard to personell. control and instrumentation circuits are to be installed separated from the main circuits by means of earthed partitions of metal or partitions of insulating and flame retardant material.g. by using cable conduits. 5. Switchgear or controlgear is considered to be metal enclosed when it consists of an outer metal enclosure with components arranged in separate metal enclosed compartments. Other alternatives may be accepted. a withdrawable multipole circuit-breaker in its isolating position.On feeder circuits if return power from the load side is not possible. The requirement concerning partitions may be effected e. 5. For the impulse voltage test in this IEC publication “List 2” applies to systems without automatic disconnection in case of earth fault. 5. The metal enclosures are to be earthed.3 The switchboard manufacturer shall issue a test report giving all the necessary information refered to in IEC 60298. 70 Regulations relating to maritime electrical installations .5 Doors of switchboards are preferably to be equipped with locking devices. “List 1” applies to other systems.7.g. 5. The isolating distance shall be in accordance to tests in IEC-publication 60129 (1984) “Alternating current disconnectors (isolators) and earthing switches. Documentation may be required. relays. This can be effected by means of a disconnector having a visible isolating distance or gap or a reliable position indicating device for each movable contact system. Switchboards doors.7. or similar visible means e..2 Switch-gear and control gear shall be able to withstand all stresses due to short-circuiting. 5.4 Means are to be provided for the disconnection of all circuit breakers and fused circuit breakers from the busbars.7.8 Passageways In front of each switchboard there is to be a passageway with a free width of at least 1 metre. Alternatively the switchboard may be located in a special room or fenced in area with lockable entrance doors. enclosure between the cable terminals and the switchgear may be omitted.” 5.
3 Flexible cables for portable equipment can only be used after special consideration of each case. cables with a voltage class U0/U = 3.1 Cables are to be of a manufacture and type of approved standards. 6.Access from both the front and rear of the switchboard may be required after consideration of each case. 6. and with the special requirements laid down in the following: – Cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR) only is to be used as core insulation.1 Approval 6. 60502 “Extruded solid dielectric insulated power cables for rated voltages from 1 kV up to 30 kV”. and in systems with isolated neutral the voltage class U between phase and earth shall be the same as the nominal system voltage. This requirement means for instance that in a 6 kV installation with isolated neutral.1. 60092-359 are to be used for sheath materials i.6/6 kV will not be accepted.2.2 Installation 6.1. PVC and thermoplastic polyethylene (PE) are not accepted. not grouped together or installed in the same conduit.2. depending upon the application. 6.2 Cables for permanent installations will normally be approved if they comply with the specifications in IEC Publication No. e. In systems with high-resistance earthed neutral without means of disconnection in the event of earth fault. Insulation screening is required for all cables. Only the types specified in IEC-Publication No. Butyl rubber.e. 6.1 Cables for high-voltage are to be installed separately from cables for lower voltages. 6. Other constructions and materials may be considered for approval. Cables 6.1.2 The Directorate for Fire and Electrical Safety. PVC. Conductor screening is required for all cables with XLPE insulation.1. and for EPR-insulated cables with rated voltage U0/U above 3. Norway depending on the Regulations relating to maritime electrical installations 71 . polychloropren or chlorosulfphonated polyethylene. Cables with a voltage class 6/10 kV are to be used. – – – – 6.4 The rated value (U) of cables shall be at least that of the nominal system voltage.g.6/6 kV.
6.application only permit installation of high-voltage cables in accommodation areas after special consideration. 60056.4. Alternatively an AC voltage test may be accepted. 6. “ Alternating current disconnectors and earthing switches” IEC -Publication No.201.C.2 Socket-outlets Socket-outlets may be used only with the special approval of the Directorate for Fire and Electrical Safety. Norway.7. however.6 above.2. 6. This must. This means a D. 60282. controlgear.1 apply.352. 7.60502. 60129. are to be used with a derating factor of 10%. 72 Regulations relating to maritime electrical installations . table 6 and NEK 410/IEC 60092. be agreed upon by the cable manufacturer. 6.4. U0 is the rated phase to earth voltage of the cable.1 apply. fuses and socket-outlets 7.5 For terminations and joints not protected by earthed metal screens the clearance distances in item 2. 7.4 Testing Cables with terminations and joints are to be subjected to a voltage test after installation according to “clause 18» of IEC Publication No. A relevant test report has.2.6. see item 2.3 Current rating The requirements for cables with temperature class 85 °C given in NEK 410/ IEC 60092. 6. table 1. see item 5. Cable terminations are not to be made in the same enclosures as equipment at lower voltages.1 Switch-gear. If the terminations are made in accordance with the installation instructions given by the manufacturer. controlgear and fuses Switchgear. to be available. Switch-gear. “High-voltage fuses”. these installation instructions may be considered to be sufficient documentation.3 Cables for high-voltage are to be specially marked.2.4 For uninsulated conductors the clearance distances laid down in item 2.3 above.” High-voltage alternating current circuitbreakers” IEC -Publication No.2. controlgear and fuses are to be designed so as to comply with relevant IEC-standards With relevant IEC standards means: • • • IEC -Publication No. however. voltage test at least 4 x U0 for 15 minutes.
Motors The requirements laid down for generators applies to motors as far as these requirements are relevant for the purpose.8. Regulations relating to maritime electrical installations 73 .
Annex III Periodical surveys Type of vessels Passenger ships Intervals once every 5th year once every year Fishing vessels Barges Cargo ships ”Oil defence vessels” which do not operate in areas containing released oil ”Oil defence vessels” which may operate in areas containing released oil Fishing vessels (less than 15 meters) once every 4th year once every 5th year once every 5th year once every 5th year Guidance: Employed in domestic trade Employed in foreign trade once every 2nd year Alternatively during the 3rd year of the sertificate cycle once every 5th year Survey by authorized company 74 Regulations relating to maritime electrical installations .
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