PSI63C0.775-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.775-W2 is a medium frequency inverter from the PSI Frequency Inverters series with a mains voltage range of 480 to 690 VAC and operates at either 50 or 60 Hz. It is water cooled, has a protection rating of IP20, and weighs approximately 25 kg. The device features an integrated power supply unit providing up to 2 A at 24 VDC.
Internal Product Review
The PSI63C0.775-W2 is a medium frequency inverter that stands out for water-cooled operation. Support for 480 to 690 VAC mains voltage and IP20 protection makes the inverter a strong fit for controlled industrial installations. A very capable option for demanding drive systems requiring stable power conversion.
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Product Description:
The PSI63C0.775-W2 is manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. Classified as a medium-frequency inverter, the unit converts high-voltage three-phase supply power into a regulated medium-frequency output for induction coils, heat generators, and other specialized loads in automated production cells. The design includes its own control power source, reducing the need for a separate auxiliary supply within the electrical cabinet. Liquid cooling helps maintain suitable component temperatures during continuous operation in electrically demanding industrial environments.
The inverter connects to industrial mains ranging from 480 to 690 VAC and supports a line frequency of 50 or 60 Hz, allowing operation on common European and North American distribution systems without a transformer. An internal auxiliary supply delivers 24 VDC at up to 2 A for contactors, relays, or small sensors connected to the chassis. Thermal management relies on a water-cooled heat exchanger that removes losses before semiconductor junction temperatures rise excessively. The housing has an IP20 protection rating, which protects against accidental finger contact with live parts. The inverter must still be installed inside a suitable cabinet that prevents exposure to dripping liquids and conductive dust.
Installation must account for residual heat dissipation of up to 420 W, and coolant flow must remain adequate throughout an ambient operating range of +10 to +55 °C. The unit weighs 25 kg, so it should be bolted to a rigid backplane rather than mounted on standard DIN rails. The supporting surface must withstand vibration and carry the load imposed by the inverter and its water connections. Climatic category 3K3 indicates the operating conditions the unit can tolerate, while storage is permitted from -25 to +70 °C without supplemental climate control. An Ethernet-based timer interface supports remote enable sequencing and integration with automated control equipment. Appropriate cable routing, overcurrent protection, and coolant plumbing should be incorporated into the cabinet layout to maintain safe operation and adequate heat removal.
