Product Description:

The PSI65C0.752-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat in the PSI Frequency Inverters series. It converts three-phase utility power into a regulated medium-frequency output that supports induction heating, brazing, and related automation tasks where stable, high-frequency energy is required. A built-in control timer that communicates over Ethernet lets the unit synchronize process cycles with PLCs and supervisory systems.

For input, the inverter accepts three-phase supplies between 400 and 480 VAC, allowing direct connection to standard plant distribution panels. Its rectifier section accommodates line frequencies of 50 or 60 Hz, so no external frequency converter is needed. An auxiliary power module outputs 24 VDC at up to 2 A, providing low-voltage power for field sensors or solenoid valves. Heat generated by the switching bridge is removed through a water-cooled plate, and the electronics are housed in an enclosure with an IP20 protection rating. This enclosure keeps live parts recessed, while the coolant circuit removes heat without relying primarily on cabinet airflow. The embedded Ethernet timer issues precise enable and dwell commands to match the inverter output with process demands.

The cooling circuit must carry away up to 420 W of thermal losses, a value used to size the heat exchanger and pump. Climatic operating conditions are categorized as 3K3 according to EN 60721-3-3, meaning the unit tolerates the light dust and moderate humidity found in control rooms. Operational electronics remain functional from +10 to +55 °C, while storage or transport between -25 and +70 °C is permitted. With a weight of approximately 25 kg, the inverter fits standard panel shelves when they provide adequate structural support. The installation must also provide the required water supply and maintain ambient conditions within the stated operating range.