R911170471 (PST6100.333-L)

PST Thyristor Power Units

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The R911170471 (PST6100.333-L) by Bosch Rexroth is a robust thyristor power unit utilized for altering and reducing current resistance in welding applications. The unit can be seamlessly integrated into any welding machine via the BOS-5000 interface, enabling swift programming, operation, and diagnostic work. It also features a field bus interface for controlling, communicating, and monitoring system functions. Other notable components include a designated I/O interface slot, an optional field bus module port for programming, and the potential to retrofit a quality module. Overload protection is ensured through a thermostat switch that triggers an alert to the weld timer. The unit complies with EN 50240 when paired with a welding transformer. It can operate at temperatures up to 55°C and can connect to a grounded power line with a voltage range of 400 V ( -20%) to 600 V (+10%), 50/60 Hz. The thyristor power unit should be installed inside a switchgear cabinet with IP 54, ensuring 100 mm of clearance on top and bottom sides to prevent overheating.