EPR Insulation Special Cables Black Welding Cable HOFR Sheath BS Certification

EPR Insulation Special Cables Black Welding Cable HOFR Sheath BS Certification

APPLICATION:

For the transmission of high currents from the electric welding machine to the welding tool. Suitable for flexible use under rough conditions, on assembly lines and conveyor systems, in machine tool and motor car manufacturing, ship building, for manually and automatically operated line and spot welding machines.

CONSTRUCTION
Conductor
16mm2 to 95mm2: Class 6 extra flexible copper conductor
according to BS EN 60228 (previously BS 6360)
120mm2 and above: Class 5 flexible copper conductor
Separator
PET (Polyester Tape)
Insulation
EPR (Ethylene Propylene Rubber) Type GP4 according to
BS 7655
Sheath
HOFR (Heat and Oil Resistant and Flame Retardant) Type EM5
according to BS EN 50363

CHARACTERISTICS
Voltage Rating
100V (450V for non-welding applications if suitably protected
from mechanical damage)
Temperature Rating
Flexed: -20°C to +85°C
Minimum Bending Radius
Flexed: 6 x overall diameter
Sheath Colour
Black

DIMENSIONS

Type 0361TQ – Plain Copper Conductors

CONDUCTORS
Class 6 Flexible Copper Conductors for Single Core and Multi-Core Cables

Class 5 Flexible Copper Conductors for Single Core and Multi-Core Cables

ELECTRICAL CHARACTERISTICS

Duty Cycle and Current Carrying Capacity

The current carrying capacity of a welding cable depends on the length of the duty cycle. The duty cycle is the length of time during which a loaded current passes through the cable over an operation period of 5 minutes, expressed as a percentage of that period. For example, if the current is flowing for the whole 5 minutes the duty cycle is 100%, and if the current is flowing for 1 minute the duty cycle is 20%.

As conductor temperature varies according to the time in use as well as current, ratings shown are given as a guide.

The permissible loading of the cable for duty cycles other than those shown in the table can be calculated using the following formula:

I = I₁₀₀ x √100/F

Where:

I: is the maximum permissible loading current for the required duty cycle.

I₁₀₀ : is the maximum permissible loading current for a duty cycle of 100%.

F : is the required duty cycle calculated as a percentage of the 5 minute operation period.

Typical guidance values for different welding processes are as follows:

Fully automatic welding 100%

Semi-automatic welding 65 – 85%

Manual welding 30 – 60%

Very infrequent or occasional welding 20%

Current Carrying Capacity

DE-RATING FACTORS