Product Description

The PST6100.321-L is a two-phase thyristor power unit. It belongs to PST 6100 product line from Bosch and is designed for operating welding transformers that have peak power rating of 76 kVA. Voltage rating of the unit is 400 to 600 Volts AC. The mains electrical supply to unit has to be made through a terminal box. Maximum allowed wire size for power connection to the power unit is 50 mm². Current rating of the PST6100.321-L is 110 Amps. The maximum duty cycle of the unit is fixed at 50% through an integrated 2.2 kilo ohm de-excitation resistor. Power supply required for the weld time CPU is nominal 24 Volts with 19 to 30 Volts DC input range. The unit is designed for convection cooling and comes with integrated heat sink. Optimal temperature ranges for operation and cooling are 0 to 55 degrees Celsius and -20 to 70 degrees Celsius.

If the unit is operating at 20 degrees Celsius, the relative humidity should not exceed 90%. If the unit is operating at 40 degrees Celsius the relative humidity should not exceed 50%. The humidity class of the PST6100.321-L is F according to DIN 40040. Housing of the unit has environmental rating of IP 20 and is designed for mounting inside a switchgear cabinet with environmental rating of IP 54. The basic switchgear cabinet loss is 70 Watts. Approximate weight of the PST6100.321-L is 12.5 kilograms. Dimensions of the unit enclosure are 463 x 280 x 239 millimeters. Recommended size of mounting cut out required for unit installation I 338 x 255 millimeters. The power unit can be mounted vertically or with its back on a mounting plate. This unit can be shipped globally with a one-year warranty period from Wake Industrial.