Product Description:

The PSI64C0.759-W1 belongs to the PSI Frequency Inverters series produced by Bosch Rexroth Indramat. Classified as a medium-frequency inverter, it converts three-phase mains power into a controllable output that drives induction heating generators, hardening machines, or other equipment requiring adjustable kilohertz ranges. Within an automation cell, the unit manages energy flow while its integrated 24 V supply powers contactors, sensors, and logic modules that coordinate process timing.

The inverter accepts a three-phase input of 400–480 VAC at 50 or 60 Hz, allowing direct connection to standard plant distribution networks. Thermal management relies on a closed-loop water-cooled heat exchanger; with cooling losses limited to 420 W, cabinet temperatures remain stable during continuous operation. An onboard auxiliary supply delivers 24 VDC at a maximum current of 2 A, eliminating the need for a separate DIN-rail supply in the control panel. These electrical ratings allow the drive to feed resonant tank circuits while maintaining low ripple on the control rails. Proper installation also reserves clearance for coolant manifolds, which increases power density compared with air-cooled units of a similar rating.

The enclosure carries an IP20 degree of protection, so it must be mounted in a closed cabinet when airborne dust or dripping water may be present. Component selection meets the 3K3 climatic category, indicating resistance to humidity and contamination levels found in office or light-industrial settings. Reliable operation is permitted from +10 to +55 °C, with storage permitted down to −25 °C when measures are taken to prevent condensation. These operating conditions suit water-cooled systems because the coolant temperature can be regulated to keep internal semiconductors within safe junction limits when the ambient air approaches the upper temperature limit. The unit weighs 25 kg, so its mounting shelf must provide adequate support before the coolant hoses and bus connections are installed.