PSI63C0.730-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.730-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It features a TriCore CPU and an Ethernet I/O interface, with a nominal mains voltage of 400 to 480 VAC and a maximum primary current of 800 Amps. This inverter uses water cooling with a minimum water flow requirement of 4 liters per minute and a cooling loss of up to 360 Watts.
Internal Product Review
The PSI63C0.730-W1 is a Bosch Rexroth Indramat medium frequency inverter with water-cooled operation for 400 to 480 VAC mains systems. The TriCore CPU and Ethernet I/O interface support fast control response and straightforward network integration. Strong thermal handling with 360 W maximum cooling loss makes the inverter a very capable choice for demanding inverter applications.
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Product Description:
The PSI63C0.730-W1 from Bosch Rexroth Indramat is a medium frequency inverter belonging to the PSI Frequency Inverters series. In automated welding, induction heating, or hardening lines, this inverter converts fixed mains power into the adjustable medium-frequency output needed to drive high-current transformers and resonant loads. The factory designation PSI63C0.730-W1 identifies a cabinet unit intended for integration into central power cabinets alongside matching drives and PLC hardware.
Inside the cabinet, basic heat generation is 69 W, rising to 110 W when the inverter operates at maximum duty cycle; these figures define the baseline thermal budget handled by the integrated water-cooled heat exchanger. The inverter accepts a three-phase supply of 400 - 480 VAC, and its mains current reaches 110 A at nominal load, parameters that dictate upstream fuse sizing and feeder cable area. A voltage tolerance of 400 V −15 % and 480 V +10 % allows operation on grids with moderate deviation. A TriCore CPU executes the modulation routines, and process data are exchanged through an Ethernet interface.
During fast-ramping cycles the direct input side can draw peaks up to 800 A, while the inverter’s secondary circuit is rated for 36 kA to energize medium-frequency transformers. To evacuate the resulting switching heat, the cooling loop must remove 360 W when the unit is fully loaded; achieving this requires at least 4 l/min of water flow, which produces only 0.1 bar pressure drop across the plates. Field wiring is accommodated by 35 mm² minimum connection cross-sections and terminal clamps up to 50 mm² that are secured with 6–8 Nm of torque. The built-in timer function also communicates over Ethernet, so all synchronization, status bits, and time-stamped events are available on the same network.
