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61557-10-2001 | International Electrotechnical Commission | Electrical Engineering
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BS EN 61557-10:2001 IEC 61557-10: 2000
Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures
The European Standard EN 61557-10:2001 has the status of a British Standard
This British Standard is the official English language version of EN 61557-10:2001. It is identical with IEC 61557-10:2000 The UK participation in its preparation was entrusted to Technical Committee PEL/85, Measuring equipment for electrical and electromagnetic quantities, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 July 2001
Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued.
BSI 07-2001
ISBN 0 580 37689 3
ICS 17.220.20;29.080.01;29.240.01
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 10: Combined measuring equipment for testing, measuring or monitoring of protective measures (IEC 61557-10:2000)
Scurit lectrique dans les rseaux de distribution basse tension jusqu' 1 000 V c.a. et 1 500 V d.c. Dispositifs de contrle, de mesure ou de surveillance des mesures de protection Partie 10: Appareils combins de contrle, de mesure ou de surveillance de mesures de protection (CEI 61557-10:2000) Elektrische Sicherheit in Niederspannungsnetzen bis AC 1000 V und DC 1500 V Gerte zum Prfen, Messen oder berwachen von Schutzmanahmen Teil 10: Kombinierte Messgerte zum Prfen, Messen oder berwachen von Schutzmanahmen (IEC 61557-10:2000)
This European Standard was approved by CENELEC on 2001-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61557-10:2001 E
EN 6155710:2001 EN -75516:011002
The text of document 85/213/FDIS, future edition 1 of IEC 61557-10, prepared by IEC TC 85, Measuring equipment for electrical and electromagnetic quantities, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61557-10 on 2001-03-01. This part 10 is to be used in conjunction with EN 61557-1. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement latest date by which the national standards conflicting with the EN have to be withdrawn __________
(dop) 2001-12-01 (dow) 2004-03-01
The text of the International Standard IEC 61557-10:2000 was approved by CENELEC as a European Standard without any modification. __________
EN 6155710:2001
Scope .............................................................................................................................. 4 Normative references....................................................................................................... 4 Definitions ....................................................................................................................... 4 Requirements .................................................................................................................. 4 Marking and operating instructions .................................................................................. 6 Tests ............................................................................................................................... 6
ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V a.c. AND 1 500 V d.c. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES Part 10: Combined measuring equipment for testing, measuring or monitoring of protective measures
This part of IEC 61557 specifies the requirements for combined measuring equipment which combines into one piece of apparatus, several measuring functions or methods of testing, measuring or monitoring, some or all of which are covered in parts 2 to 7.
Clause 2 of parts 1 to 7 of IEC 61557 applies.
For the purposes of this part of IEC 61557, the definitions given in parts 1 to 7 of IEC 61557 and the following definitions apply. 3.1 combined measuring equipment equipment which combines, into one piece of apparatus, several measuring functions or methods of testing, measuring or monitoring, some or all of which are in accordance with other parts of IEC 61557 3.2 extraneous overvoltage voltage applied to the terminals of the combined measuring equipment to test the overvoltage withstand capability
The requirements specified in the respective parts of the IEC 61557 series and the following requirements shall apply: 4.1 A user shall not be subjected to danger when the highest extraneous overvoltage according to the respective parts of this standard (see table 1) is accidentally applied to each combination of all test/measurement terminals in every possible combination of functions and ranges of a combined measuring equipment, even though some of these functions are not themselves covered by parts 2 to 7. All other terminals shall be clearly identifiable. Any terminal which can be confused with a test/measurement terminal shall be indicated as such.
Table 1 Extraneous overvoltage withstand capability
Part of IEC 61557 Extraneous overvoltage and duration time 2 1,2 U N 10 s 3 1,2 U 0 continuous and 1,1 phase to phase voltage 1 min 4 1,2 U 0 continuous 5 1,2 U 0 continuous 6 1,2 U 0 continuous and 1,1 phase to phase voltage 1 min 7 1,2 U 0 continuous
The duration time shall be the longest possible indicated in the respective parts of IEC 61557.
NOTE U 0 is the voltage against earth (see 3.1.3a of IEC 61557-1). U N is the nominal output voltage (see 3.2.1 of IEC 61557-1, and 3.1 of IEC 61557-2).
4.1.1 If parts of the combined measuring equipment are defective after the extraneous overvoltage is applied, the defect shall be clearly indicated. Indications and displayed values shall not lead to unsafe interpretations. 4.1.2 When the extraneous overvoltage is applied, protective devices may be activated. The activation of protective devices in equipment for measuring or testing insulation resistance according to IEC 61557-2 shall be indicated, if the operation of the equipment is impaired. 4.2 When the combined measuring equipment bears one of the following markings, the applied extraneous overvoltage can be reduced to a voltage of 1,1 phase to phase voltage: a)
DO NOT USE IN DISTRIBUTION SYSTEMS WITH VOLTAGES HIGHER THAN ... V.
The marking shall be written in the corresponding country language. The value of the voltage shown on the marking shall be 1,1 maximum phase to phase voltage. or b)
Example of pictogram for a 500 V AC system
Pictogram and outline contrasting to the background The value of the voltage shown on the marking shall be 1,1 maximum phase to phase voltage.
Combined measuring equipment bearing one of these markings shall withstand the above specified overvoltage for 1 min without any defect. Protective devices may be activated according to 4.1.2. If the combined measuring equipment includes an insulation resistance measuring or testing function, this function shall fulfill in addition the overvoltage requirement according to IEC 61557-2.
The requirements specified in the respective parts of IEC 61557 shall apply. If the requirements of 4.2 are applicable, the marking shall be clearly readable in the position of normal use.
In addition to the tests specified in the respective parts of IEC 61557, the following test shall be executed: 6.1 The overvoltage withstand capability for the combined measuring equipment shall be type tested by using an extraneous overvoltage either: a) or b) 6.2 6.3 in accordance with 4.1
in accordance with 4.2
Compliance with the requirements given in clause 5 shall be verified (routine test). The compliance with the test in this clause shall be recorded.
BS EN 61557-10: 2001 IEC 61557-10: 2000
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