Tratos Products - Cable Manufacturer

BS 6231 – Electric cables. Single core PVC insulated flexible cables of rated voltage 600/1000 V for switchgear and control gear wiring.
BS 6231:2006 standard specifies requirements for construction and performance and gives methods of testing for single-core, non-sheathed electric cables of rated voltage 600/1000 V having PVC insulation.

The cables are intended for use in the wiring of switch, control, metering, relay and instrument panels of power switchgear and for such purposes as internal connections in rectifier equipment and its motor starters and controllers. They are intended for use at alternating voltages not exceeding 600 V to earth and direct voltages not exceeding 1000 V to earth.
When installed in the equipment, they are suitable for wiring circuits for which the prescribed alternating test voltage does not exceed 4 kV r.m.s. for 1 min.”

The combination of ambient temperature and temperature rise due to current should not result in a conductor temperature exceeding the designated temperature.

Type Conductor Designated temperature Rated voltage
Plain annealed copper oC V
AU Rigid, Round, Solid 70 60
AK Flexible 70 60
BR Rigid, Round, Stranded 70 600/1000
BU Rigid, Round, Solid 70 600/1000
BK Flexible 70 600/1000
CR Rigid, Round, Stranded 90 600/1000
CU Rigid, Round, Solid 90 600/1000
CK Flexible 90 600/1000

Type Conductor Designated temperature Rated voltage
Plain annealed copper oC V
AU Rigid, Round, Solid 70 60
AK Flexible 70 60
BR Rigid, Round, Stranded 70 600/1000
BU Rigid, Round, Solid 70 600/1000
BK Flexible 70 600/1000
CR Rigid, Round, Stranded 90 600/1000
CU Rigid, Round, Solid 90 600/1000
CK Flexible 90 600/1000

The latest 2006 edition now only covers 2 types of cable

Type Conductor Maximum conductor temperature Rated Voltage
Plain annealed copper oC V
BK Flexible 70 600/1000
CK Flexible 90 600/1000

Type Conductor Maximum conductor temperature Rated Voltage
Plain annealed copper oC V
BK Flexible 70 600/1000
CK Flexible 90 600/1000

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