PSI64C0.787-W1 Bosch Rexroth Indramat
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MPN: R911174279
The Bosch Rexroth Indramat PSI64C0.787-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage of 400 to 480 VAC, has a maximum primary current of 1600 Amps, and a logic supply output of 24 VDC with a maximum current of 2 Amps. The unit features water cooling, a protection rating of IP20, and measures 653 mm in height, 288 mm in width, and 280 mm in depth.
Internal Product Review
The PSI64C0.787-W1 is a Bosch Rexroth Indramat medium frequency inverter with water-cooled operation and IP20 protection. A 400 to 480 VAC mains voltage range and 220 A nominal mains current support dependable integration in demanding power conversion systems. A 1600 A max primary current and 54 kA max secondary current highlight this inverter’s strong capability for intensive industrial heating applications.
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Product Description:
The PSI64C0.787-W1 is a medium-frequency inverter built by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase utility power into a controlled medium-frequency output for induction heaters, melting generators, and other process loads that require precise energy delivery. The unit mounts in a control cabinet and connects to higher-level control systems through an integrated Ethernet timer. This interface supports sequence management without requiring a separate timing controller.
The inverter accepts a line-voltage range of 400–480 VAC and draws up to 220 A from the mains, so the supply connection accommodates conductors with a cross-sectional area of 95 mm². The unit uses water cooling to remove heat from the power section through a closed liquid circuit. Stable operation requires a minimum coolant flow of 4 L/min. Under the highest thermal load, the power section transfers 700 W into the coolant, while cabinet heat dissipation ranges from 69 W under basic conditions to 210 W at maximum inverter utilization. The cooling circuit produces a pressure drop of 0.6 bar at the minimum flow rate. Its fittings use M16 × 1.5 threads for secure hose connections. When used with a PSG 3100 secondary circuit, the system can deliver 54 kA to the connected work coil.
The control electronics operate from a 24 VDC logic supply that draws no more than 2 A, keeping the signal hardware electrically separate from the high-current power stage. The input bus can withstand transients associated with primary surges of up to 1600 A. The cabinet-mounted unit has an IP20 protection rating, so it must be installed inside an enclosure that prevents exposure to conductive dust and moisture. The housing is 288 mm wide, 653 mm high, and 280 mm deep, providing front access while leaving room for coolant hoses. The integrated Ethernet timer can coordinate dwell periods, ramp profiles, and quench delays without external relays.
