BS EN 50525

BS EN 50525 – Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) is a multi-part standard that gives the general requirements for rigid and flexible energy cables of rated voltages U0/U up to and including 450/750 V a.c., used in power installations and with domestic and industrial appliances and equipment. 

• Part1 covers General requirements
• Part 2 covers cables for General applications 
• Part 3 covers cables with Special fire performance

Parts 2 and 3 are sub-divided into parts for particular cables or applications

BS EN 50525 – Part 1: General requirements

Low voltage energy cables of rated voltages up to and including 450/750 V (U0/ U)

Scope

BS EN 50525-1 European Standard gives the general requirements for rigid and flexible energy cables of rated voltages U0/U up to and including 450/750 V a.c., used in power installations and with domestic and industrial appliances and equipment.

Note 1: The term “cord” is used for some types of flexible cables.
Note 2: Rated voltages are given by reference to alternating current (a.c.) systems. Use of the cables in direct current (d.c.) systems is permitted.
Note 3: National regulations may prescribe additional performance requirements for cables that are not given in the particular requirements. For example, for buildings with high levels of public access, additional fire performance requirements may be applicable, 

The test methods for checking conformity with the requirements are given in other standards (see Electrical test methods – EN 50395; Non-electrical test methods – EN 50396.)

The particular types of cables are specified in EN 50525 -2 (series) and EN 50525-3 (series). The individual parts within those two series are collectively referred to as “the particular specifications”. 

Only the sizes (conductor class, cross-sectional area), number of cores, other constructional features and rated voltages given in the particular specification apply to the individual cable type. 

The code designations of these types of cables are in accordance with HD 361.

BS EN 50525 – Part 2: General applications

Part 2-11 covers PVC flexible cables

Part 2-11: Cables for general applications – Flexible cables with thermoplastic PVC insulation

Scope 

BS EN 50525-2-11 applies to thermoplastic (PVC) insulated and PVC sheathed flexible cables.

The cables are of rated voltages U0/U up to and including 300/500 V. 

The cables are intended for the connection of domestic appliances to the fixed supply. 

Circular cables and flat cables are included. 

The maximum conductor operating temperatures for the cables in this standard are 70 °C (VV types) and 90 °C (V2V2 types). 

Note: HD 516 contains extensive guidance on the safe use of cables in this standard. 

Part 2-12 covers extensible leads

Part 2-12: Cables for general applications – Cables with thermoplastic PVC insulation for extensible leads

Scope 

BS EN 50525-2-12 applies to thermoplastic (PVC) insulated and PVC sheathed extensible leads. 

The cables are of rated voltages U0/U up to and including 300/500 V. 

The cables are intended for the connection of domestic appliances to the fixed supply. 

Circular cables and flat cables are included. 

The maximum conductor operating temperature for each of the cables in this standard is 70 °C. 

Note: HD 516 contains extensive guidance on the safe use of cables in this standard.

Part 2-21 covers Rubber flexible cables

Part 2-21: Cables for general applications – Flexible cables with crosslinked elastomeric insulation.

Scope

BS EN 50525-2-21 applies to flexible cables, insulated with crosslinked elastomeric compound, and sheathed with either crosslinked elastomeric compound or thermoplastic polyurethane (TPU).

The cables are of rated voltages Uo/U up to and including 450/750 V.

The cables are intended for a variety of applications were appliances or equipment,

including heavy industrial equipment, require a flexible connection to the power supply.

The following particular cable types are included:

• General purpose cables (RR and RN types);
• Water-resistant cables (RN8 types);
• General purpose cables with low temperature capability (BB and BN4 types);
• TPU sheathed cables (BQ types);
• High-temperature cables (GG types).

The maximum conductor operating temperatures for the cables in this standard are 60 °C (R types), 90 °C (B types) and 110 °C (G types).

Note: HD 516 contains extensive guidance on the safe use of cables in this standard.

Part 2-22 covers Braided flexible cables

Please contact Tratos for details of these cables

Part 2-31 covers PVC conduit wire

Part 2-31: Cables for general applications — Single core non-sheathed cables with thermoplastic PVC insulation

Scope

BS EN 50525-2-31 applies to non-sheathed single core cables insulated with thermoplastic (PVC) insulation.

The cables are of rated voltages Uo/U up to and including 450/750 V.

The cables are intended for fixed wiring applications.

Note 1: Cables rated 450/750 V may be used at 600/1 000 V when this cable is used in fixed installations with mechanical protection, within switchgear and control gear – see HD 516.
The maximum conductor operating temperatures for the cables in this standard are 70 °C (V types) and 90 °C (V2 types).

Note 2: HD 516 contains extensive guidance on the safe use of cables in this standard.

Part 2-41 covers Single core Silicone rubber cables

Part 2-41: Cables for general applications – Single core cables with crosslinked silicone rubber insulation

Scope

BS EN 50525-2-41 applies to cross-linked silicone rubber-insulated single-core cables. The types included are either insulated only, insulated and braided, or insulated and sheathed. 

The cables are of rated voltages U0/U up to and including 300/500 V. 

The cables are intended for use in fixed installations within high-temperature zones. 

The maximum conductor operating temperature for each cable in this standard is 180 °C. 

Note: HD 516 contains extensive guidance on the safe use of cables in this standard. 

Part 2-42 covers Single core EVA rubber cables

Part 2-42: Cables for general applications – Single core non-sheathed cables with crosslinked EVA insulation

Scope 

BS EN 50525-2-42 applies to crosslinked elastomeric insulated single core non- sheathed cables. 

The cables are of rated voltages U0/U up to and including 450/750 V. 

Note 1:Cables rated 450/750 V may be used at 600/1 000 V when this cable is used in fixed installations with mechanical protection, within switchgear and control gear. See HD 516. 

The cables are intended for use in fixed installations within high temperature zones. 

The maximum conductor operating temperature for each of the cables in this standard is 110 °c. 

Note:  HD 516 contains extensive guidance on the safe use of cables in this standard. 

Part 2-51 covers Wiring cables with PVC sheaths

Part 2-51: Cables for general applications – Oil resistant control cables with thermoplastic PVC insulation

Scope

This European Standard applies to oil resistant polyvinyl chloride insulated and sheathed flexible cables. Screened and non-screened types are included. 

The cables are of rated voltages U0/U 300/500 V. 

The cables are intended for the interconnection of manufacturing machines. 

The maximum conductor operating temperature for the cables in this standard is 70 °C.

Note 2: HD 516 contains extensive guidance on the safe use of cables in this standard. 

Part 2-71 covers cables with Tinsel conductors

Part 2-71: Cables for general applications – Flat tinsel cables {cords) with thermoplastic PVC insulation

Scope 

This European Standard applies to thermoplastic (PVC) insulated flexible flat tinsel flexible cables. 

The cables are of rated voltage U0/U 300/300 V. 

The cables are intended for the connection of small appliances to the fixed supply. 

The maximum conductor operating temperature for the cable in this standard is 40 °C.

Note: HD 516 contains extensive guidance on the safe use of cables in this standard. 

Part 2-72 covers Flat PVC separable cables

Please contact Tratos for details of these cables.

Part 2-81 covers welding cables

Part 2-81 – Cables for general applications – Cables with crosslinked elastomeric covering for arc welding

Scope

This European Standard applies to single-core, crosslinked elastomer covered arc welding cables. 

The cables are of rated voltage Uo/ U 100/100 V. The cables are intended for connections between the welding power source and the electrode holder, and the work piece. Two types of cable are included, with respectively Class D and Class E conductors. These conductors are more flexible than Class 6 to EN 60228, with Class E having greater flexibility. 

The maximum conductor operating temperature for each of the cables in this standard is 85 °C.

Note: HD 516 contains extensive guidance on the safe use of cables in this standard, and gives specific current ratings and volt drop data.

Part 2-82 covers cables for Lighting chains

Please contact Tratos for details of these cables.

BS EN 50525 – Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U) is a multi-part standard that gives the general requirements for rigid and flexible energy cables of rated voltages U0/U up to and including 450/750 V a.c., used in power installations and with domestic and industrial appliances and equipment. 

• BS EN 50525 – Part1 covers General requirements.
• BS EN 50525 – Part 2 covers cables for General applications 
• BS EN 50525 – Part 3 covers cables with Special fire performance

Parts 2 and 3 are sub-divided into parts for particular cables or applications:

• Part 2-11 covers PVC flexible cables
• Part 2-12 covers extensible leads
• Part 2-21 covers Rubber flexible cables
• Part 2-22 covers Braided flexible cables
• Part 2-31 covers PVC conduit wire
• Part 2-41 covers Single core Silicone rubber cables
• Part 2-42 covers Single core EVA rubber cables
• Part 2-51 covers Wiring cables with PVC sheaths
• Part 2-71 covers cables with Tinsel conductors
• Part 2-72 covers Flat PVC separable cables
• Part 2-81 covers Welding cables
• Part 2-82 covers cables for Lighting chains
• Part 2-83 covers Flexible silicone rubber insulated cables
• Part 3-11 covers Thermoplastic halogen-free cables
• Part 3-21 covers Cross-linked halogen-free cables
• Part 3-31 covers Thermoplastic single-core halogen-free cables
• Part 3-41 covers Cross-linked single core halogen-free cables