5.1.

Vehicles shall, depending on the vehicle designation, comply with the provisions below as assigned in the table overleaf ( 3 ). For the purpose of this Regulation, MEMU vehicles shall comply with the requirements applicable to EX/III vehicles. Vehicles approved as being in compliance with the requirements applicable to EX/III under this Regulation, as amended by the 04 series of amendments, shall be deemed to comply with the requirements applicable to MEMU vehicles. 5.1.1. ELECTRICAL EQUIPMENT 5.1.1.1. General provisions The electrical installation as a whole shall meet the following provisions, in accordance with the table of paragraph 5.1. 5.1.1.2. Wiring 5.1.1.2.1. The size of conductors shall be large enough to avoid overheating. Conductors shall be adequately insulated. All circuits shall be protected by fuses or automatic circuit breakers, except for the following: — from the battery to the cold start and stopping systems of the engine — from the battery to the alternator — from the alternator to the fuse or circuit breaker box — from the battery to the starter motor — from the battery to the power control housing of the endurance braking system, if this system is electrical or electromagnetic — from the battery to the electrical lifting mechanism for lifting the bogie axle. The above unprotected circuits shall be as short as possible.



VEHICLE DESIGNATION (according to paragraph 9.1 of the ADR) TECHNICAL PROVISIONS EX/II EX/III AT FL OX Electrical equipment 5.1.1.2. Wiring X X X X 5.1.1.3. Battery master switch X X 5.1.1.3.1. X X 5.1.1.3.2. X X 5.1.1.3.3. X 5.1.1.3.4. X X 5.1.1.4. Batteries X X X 5.1.1.5. Permanently energizedcircuits X X 5.1.1.5.1. X 5.1.1.5.2. X 5.1.1.6. Electrical installation behindcab X X 5.1.2. Prevention of fire risks 5.1.2.2. Vehicle cab X 5.1.2.3. Fuel tanks X X X X 5.1.2.4. Engine X X X X 5.1.2.5. Exhaust system X X X 5.1.2.6. Endurance braking system X X X X 5.1.2.7. Combustion heaters 5.1.2.7.1. X X X X X 5.1.3. Braking equipment 5.1.3.1. Braking equipment X X X X 5.1.3.2. Braking equipment X 5.1.4. Speed limitation device X X X X X 5.1.5. Coupling devices for trailers X X 5.1.1.2.2. Cables shall be securely fastened and positioned in such a way that the conductors are adequately protected against mechanical and thermal stresses. 5.1.1.3. Battery master switch 5.1.1.3.1. A switch for breaking the electrical circuits shall be placed as close to the battery as practicable. If a single pole switch is used it shall be placed in the supply lead and not in the earth lead. 5.1.1.3.2. A control device to facilitate the disconnecting and the reconnecting functions of the switch shall be installed in the driver’s cab. It shall be readily accessible to the driver and distinctively marked. It shall be protected against inadvertent operation by either adding a protective cover, by using a dual movement control device, or by other suitable means. Additional control devices may be installed provided they are distinctively marked and protected against inadvertent operation. If the control device(s) are electrically operated, the circuits of the control device(s) are subject to the requirements of paragraph 5.1.1.5. 5.1.1.3.3. The switch shall have a casing with protection degree IP65 in accordance with IEC Standard 529. 5.1.1.3.4. The cable connections on the switch shall have protection degree IP54. However, this does not apply if these connections are contained in a housing which may be the battery box. In this case it is sufficient to insulate the connections against short circuits, for example with a rubber cap. 5.1.1.4. Batteries The battery terminals shall be electrically insulated or covered by the insulating battery box cover. If the batteries are not located under the engine bonnet, they shall be fitted in a vented box. 5.1.1.5. Permanently energized circuits 5.1.1.5.1. Those parts of the electrical installation, including the leads which shall remain energized when the battery master-switch is open, shall be suitable for use in hazardous areas. Such equipment shall meet the appropriate requirements of IEC 60079 ( 4 ), parts 0 and 14 and the additional requirements applicable of IEC parts 1, 2, 5, 6, 7, 11, 15 or 18 ( 5 ). For the application of IEC 60079 part 14, the following classification shall be used: Permanently energized electrical equipment including the leads that are not subject to paragraphs 5.1.1.3 and 5.1.1.4 shall meet the requirements for zone 1 for electrical equipment in general or meet the requirements for zone 2 for electrical equipment situated in the driver’s cab. The requirements for explosion group IIC, temperature class T6, shall be met. The supply leads for permanently energized equipment shall either comply with the provisions of IEC 60079, part 7 (‘Increased safety’) and be protected by a fuse or automatic circuit breaker placed as close to the source of power as practicable or, in the case of ‘intrinsically safe equipment’, they shall be protected by a safety barrier placed as close to the source of power as practicable. However, for permanently energized electrical equipment installed in an environment where the temperature caused by non-electrical equipment situated in that environment exceeds the T6 temperature limit, the temperature classification of the permanently energized electrical equipment shall be at least that of the T4 temperature class. 5.1.1.5.2. Bypass connections to the battery master switch for electrical equipment which must remain energized when the battery master switch is open shall be protected against overheating by suitable means, such as a fuse, a circuit breaker or a safety barrier (current limiter). 5.1.1.6. Provisions concerning that part of the electrical installation situated to the rear of the driver’s cab The whole installation shall be so designed, constructed and protected such that it cannot provoke any ignition or short-circuit under normal conditions of vehicle use and that these risks can be minimized in the event of an impact or deformation. In particular: 5.1.1.6.1. Wiring The wiring located to the rear of the driver’s cab shall be protected against impact, abrasion and chafing during normal vehicle operation. Examples of appropriate protection are given in the figures 1, 2, 3 and 4 below. However, the sensor cables of antilock braking devices do not need additional protection. Figure 1 Figure 2 Figure 3 Figure 4 5.1.1.6.2. Lighting Lamp bulbs with a screw cap shall not be used. ▼M1 5.1.1.6.3. Electrical connections Electrical connections between motor vehicles and trailers shall have a protection degree IP54 in accordance with IEC standard 529 and be designed to prevent accidental disconnection. Connections shall be in conformity with ISO 12098:2004 and ISO 7638:2003, as appropriate. ▼B 5.1.2. Prevention of fire risks 5.1.2.1. General provisions The following technical provisions shall apply in accordance with the table of paragraph 5.1. 5.1.2.2. Vehicle cab Unless the driver’s cab is made of materials which are not readily flammable, a shield made of metal or other suitable material of the same width as the tank shall be fitted at the rear of the cab. Any window in the rear of the cab or in the shield shall be hermetically closed and made of fire resistant safety glass with fire resistant frames. Furthermore, there shall be a clear space of not less than 15 cm between the tank and the cab or the shield. 5.1.2.3. Fuel tanks The fuel tanks for supplying the engine of the vehicle shall meet the following requirements: 5.1.2.3.1. In the event of any leakage, the fuel shall drain to the ground without coming into contact with hot parts of the vehicle or the load; 5.1.2.3.2. Fuel tanks containing petrol shall be equipped with an effective flame trap at the filler opening or with a closure with which the opening can be kept hermetically sealed. 5.1.2.4. Engine The engine propelling the vehicle shall be so equipped and situated to avoid any danger to the load through heating or ignition. In the case of EX/II, EX/III and MEMU vehicles the engine shall be of compression-ignition construction. 5.1.2.5. Exhaust system The exhaust system as well as the exhaust pipes shall be so directed or protected to avoid any danger to the load through heating or ignition. Parts of the exhaust system situated directly below the fuel tank (diesel) shall have a clearance of at least 100 mm or be protected by a thermal shield. The exhaust system of EX/II, EX/III and MEMU vehicles shall be so constructed and situated that any excess heat shall not constitute a hazard to the load by raising the temperature on the inner surface of the load compartment above 80 °C ( 6 ). 5.1.2.6. Vehicle endurance braking Vehicles equipped with endurance braking systems emitting high temperatures placed behind the rear wall of the driver’s cab shall be equipped with a thermal shield securely fixed and located between this system and the tank or load so as to avoid any heating, even local, of the tank shell or the load. In addition, the thermal shield shall protect the braking system against any outflow or leakage, even accidental, of the load. For instance, a protection including a twin-shell shield shall be considered satisfactory. 5.1.2.7. Combustion heaters 5.1.2.7.1. Combustion heaters shall comply with the relevant technical requirements of ECE Regulation No 122 (including those of Annex 9) as amended, in accordance with the dates of application specified therein. 5.1.3. Braking equipment Vehicles subject to the requirements of marginal 10 221 of ADR shall fulfil all the relevant requirements of Regulation No 13 (including those of annex 5) as amended in accordance with the dates of application specified therein. 5.1.3.1. EX/III, AT, FL, OX and MEMU vehicles shall fulfil all relevant requirements of Regulation No 13 including those of annex 5. 5.1.3.2. EX/II vehicles shall fulfil all relevant requirements of Regulation No 13. Nevertheless, the requirements of annex 5 are not applicable. 5.1.4. Speed limitation Power driven vehicles of categories N2 and N3 shall be equipped with a speed limitation device according to the technical requirements of Regulation No 89, as amended. The device shall be set in such a way that the speed cannot exceed 90 km/h, bearing in mind the technological tolerance of the device. 5.1.5. Coupling devices for trailer Coupling devices for trailers shall comply with the technical requirements of Regulation No 55 as amended in accordance with the dates of application specified therein.