Product Description

Bosch Rexroth is a company renowned for producing some of the best motion control, industrial application, and automation products. Among them are thyristor power units that are used for connection to welding transformers under which the PST6250.627-L is part of. This type features a 2-phase design, comes with an integrated weld timer, and a quality module slot for retrofitting. The unit features an IP 20 protection category and should be mounted in an IP 54 protection class. The ambient air in the cabinet should be free of acids, corrosive agents, caustic solutions, and salts.

The PST6250.627-L ambient conditions are a maximum installation altitude of 2000 meters, a permissible relative humidity of 90%, and 50% at 20 degrees and 40 degrees respectively. The ambient storage and operating temperatures are -25 to 70 degrees and 55 degrees. Electrical parameters include a 200 A nominal system current, 400 V to 600 V line voltage connection, and a 50/60 Hz clock frequency. The mechanical data of the PST6250.627-L includes weight of approximately 12.5Kg, 95mm2 wire range, and a metal oxide Varistor overload protection. It can assume a vertical mounting orientation or can be mounted on a mounting plate.

This thyristor power unit features a basic construction that consists of mounting options for the left side and rear panel, mains supply connection, welding transformer connection, and slots for I/O interfaces such as parallel, Fieldbus, and serial interfaces. Other slots include retrofitting for a quality module, Fieldbus for programming, and a battery compartment. The PST6250.627-L comes with a thermostatic switch that prevents unit overload by blocking any further sequences. This happens when the temperature of the unit exceeds 80 degrees. It comes with a one year warranty.