PSI63C0.765-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.765-W1 is a medium frequency inverter in the PSI Frequency Inverters series. It operates with a mains voltage of 400 to 480 VAC and has a maximum output current of 800 Amps. This water-cooled inverter features IP20 protection and supports a clock frequency of 1 kHz.
Internal Product Review
The PSI63C0.765-W1 is a medium frequency inverter with water-cooled thermal management for stable operation under sustained load. Operation on 400 - 480 VAC mains and 800 A maximum output current gives the unit strong electrical capacity for high-demand installations. IP20 protection and 4 l/min cooling water flow support dependable integration in controlled industrial environments, making the inverter a strong choice for continuous medium-frequency service.
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Product Description:
The PSI63C0.765-W1 medium-frequency inverter is produced by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. Classified as a medium-frequency inverter, it converts a three-phase supply into controlled medium-frequency power for automated processes that need stable, high-current waveforms. In production lines, the device links to supervisory equipment over an Ethernet interface so that power bursts align with cycle commands and sensor feedback. Its control behavior supports processes that require tightly timed power delivery and consistent output from cycle to cycle.
The inverter’s internal switching operates at a clock frequency of 1 kHz, meaning its IGBT bridge refreshes every millisecond to shape the output waveform. Under continuous duty, it delivers a nominal system current of 110 A, while its power stage can handle peak conduction up to 800 A for brief load surges; the secondary side can momentarily rise to 36 kA to energize low-impedance coils. Supply tolerance spans 400 – 480 VAC, enabling installation on standard factory power networks without a step-up transformer. Switching losses inside the cabinet add 69 W of permanent heat, and cooling losses can reach 420 W during maximum output, so the enclosure needs adequate thermal management. Water cooling is the primary thermal path, and the coolant must stay below 30 °C to protect the semiconductor junctions.
A flow rate of 4 l/min through the M16 × 1.5 threaded water ports removes heat while keeping cabinet noise low. The housing is rated IP20, so it is intended for clean electrical enclosures and needs 100 mm of minimum installation clearance around auxiliary parts. Ambient temperatures may reach 55 °C, and installation altitude can be up to 2000 m without derating. Field wiring enters through 50 mm² terminals and supports conductors up to 35 mm², which helps the power connections remain secure in compact cabinet layouts.
