PSI65C0.757-W1 Bosch Rexroth Indramat
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MPN: R911174566
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The Bosch Rexroth Indramat PSI65C0.757-W1 is a medium frequency inverter in the PSI Frequency Inverters series with a water cooled design and IP20 protection. It operates at a mains voltage of 400 to 480 VAC, supports a frequency of 50 or 60 Hz, and has a maximum cooling loss of 420 Watts. The unit includes an integrated power supply that outputs 24 VDC at up to 2 Amps and weighs approximately 25 kilograms.
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Product Description:
The PSI65C0.757-W1 medium-frequency inverter is manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. Within a production cell, it links the mains network to resonant work coils or transformers, delivering regulated medium-frequency energy for heating, brazing, or welding operations. Integration with drive and process controllers enables precise adjustment of the power delivered to a load without mechanical tap changers. This electronic control method supports repeatable process timing and allows output changes to be coordinated with other automated equipment in the production cell.
The inverter connects directly to three-phase supplies rated at 400–480 VAC, eliminating the need for external step-up or step-down devices within that input range. Its input stage operates with line frequencies of 50 or 60 Hz, allowing installation on compatible European or North American power systems. Thermal management relies on a water-cooled heat exchanger, and the coolant circuit removes up to 420 W of heat from the power electronics to keep internal temperatures within operating limits. The enclosure has a protection rating of IP20, making it suitable for installation inside a control cabinet while helping prevent accidental contact with live components. Adequate cabinet clearance must be maintained around the electrical connections and cooling lines so that wiring and coolant routing do not obstruct access to the unit.
An integrated auxiliary supply delivers 24 VDC at up to 2 A, providing power for compatible sensors, contactors, or a fieldbus interface without requiring a separate DIN-rail supply. Control sequencing is handled through an Ethernet-based timer module, which supports remote setpoint changes over plant networks. The unit complies with climatic class 3K3 under EN 60721-3-3 and operates at ambient temperatures from +10 to +55 °C. When powered down for storage or shipment, it tolerates temperatures from -25 to +70 °C. With a mass of approximately 25 kg, the inverter requires a cabinet structure and mounting hardware capable of supporting its weight. The coolant connections must be routed securely to prevent mechanical strain on the heat exchanger during installation and operation.
