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Welding Power Supply
These welders may be provided with one of three types of power sources.
SINGLE PHASE welder transformer rated at 50% duty cycle per RWMA standards
selected for KVA rating based on power required for welding and production considerations.
SINGLE PHASE D.C. power pack with silicon diodes arranged for full wave rectification of the weld transformer
secondary current.
THREE PHASE D.C. power pack with silicon diodes arranged for full wave rectification of the weld transformer secondary current.
The power supplies are mounted at the rear of the
main frame and are sealed to prevent flash particles from entering the power supply area. They are connected to the stationary and movable platens by heavy water-cooled copper buss bars and flexible band connectors.
Transformer primary tap switches are included for a wide range of welding applications.
Welder sizes range from the B-2.5 Butt welder for band saws, providing 2.5 KVA, 1 phase transformer and 1200 pounds
upset force, to the B-1600 Butt welder with 1600 KVA transformer and 1 million pounds upset force for aircraft landing gear.
Machine frame sizes are standardized according to upset force such as 5000,
10,000, 20,000, 40,000, etc.; the electrical rating varies proportionally with the power required and the duty cycle of the machine.
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