PSI63C0.747-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.747-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It features a TriCore CPU, operates with three power phases, and supports a mains voltage range of 400 to 480 VAC. The unit is air cooled, provides IP20 protection, and has maximum output and secondary currents of 800 A and 36 kA, respectively.
Internal Product Review
The PSI63C0.747-L1 is a medium frequency inverter with air-cooled operation. TriCore CPU architecture and Ethernet I/O support fast control response and straightforward network integration. Support for 400 to 480 VAC mains and 800 A maximum output current makes the inverter a strong fit for demanding power applications.
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Product Description:
The Bosch Rexroth Indramat PSI63C0.747-L1 belongs to the PSI Frequency Inverters series and functions as a medium-frequency inverter for three-phase power systems. Inside an automated cell, this unit converts the plant supply to a controlled medium-frequency output that drives induction heating coils, welding transformers, or other processes that need precisely shaped current waveforms. By combining a high-speed control core with integrated networking, the inverter forms the link between the facility mains and process equipment that demands fast energy transfer and repeatable thermal profiles.
Incoming power between 400–480 VAC is rectified and modulated at a carrier frequency of 1 kHz, a switching rate that balances dynamic response with conduction losses. Under normal duty, the converter channels 110 A of system current, while its power section can deliver up to 800 A of output to the connected load during peak demand. Thermal margins are maintained as long as ambient air stays below 55 °C because the enclosure relies on forced-air passages rather than liquid cooling. These electrical and thermal operating points help determine the appropriate transformers, coil sets, and protective cabling used in medium-frequency installations.
The secondary side of the inverter can supply momentary currents reaching 36 kA, making it suitable for short-duration, high-energy pulses used in resistance welding guns and brazing heads. Line and load conductors terminate on lugs that accommodate up to 50 mm² cross-section, and auxiliary electronics are powered by a 24 VDC logic rail that is isolated from the main bus. An IP20 degree of protection permits mounting inside a ventilated control cabinet where air cooling, a TriCore processor, and Ethernet-based I/O handle real-time supervision. With a 463 mm height, 239 mm width, 280 mm depth, and three-phase topology, the frame fits standard racks while leaving clearance for cabinet airflow and internal wiring.
