PSI63C0.752-L2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.752-L2 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a mains voltage range of 480 to 690 VAC and delivers a maximum output current of 800 Amps. The inverter features an IP20 degree of protection and uses air cooling to maintain a maximum cabinet loss of 200 Watts.
Internal Product Review
The PSI63C0.752-L2 is a medium frequency inverter with air-cooled operation. Support for 480 to 690 VAC mains voltage and integrated temperature monitoring makes this unit well suited for stable industrial power conversion. Strong current capability, highlighted by 800 A maximum output current, makes this inverter an excellent option for demanding installations.
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Product Description:
Bosch Rexroth Indramat manufactures the PSI63C0.752-L2 within the PSI Frequency Inverters series. This medium-frequency inverter converts a high-voltage three-phase supply into controlled medium-frequency power that can be matched to induction coils, melting furnaces, or other resonant loads used in automated production. Positioned between the mains and the load, it enables tightly regulated energy transfer while the built-in Ethernet timer synchronizes firing commands with upstream PLC sequences.
The power stage accepts line voltages from 480–690 VAC and its logic circuits are fed by a separate 24 V DC control supply, allowing independent startup and safe shutdown routines. A pulse pattern generated at 1 kHz clock frequency drives the switching devices that shape the output waveform. Peak operating demands are handled by a maximum output current of 800 A, yet the enclosure meets an IP20 protection rating, so it must be installed inside a closed electrical cabinet. Forced air moves through internal ducts to dissipate heat, and a metal-oxide-varistor array clamps transient overvoltages on the DC link to protect semiconductors and downstream equipment.
Total cabinet heat loss is limited to 200 W, aiding thermal management when ambient room temperatures approach the allowable ceiling of 55 °C. The inverter’s steady-state loading reference is the nominal system current of 110 A, while short bursts delivered through a PSG 3100 transformer can push the secondary side to 36 kA for fast energy injection. Integrated temperature sensors monitor critical points and trigger derating if the cooling air rises above 45 °C. Operation is permitted up to 2000 m altitude without additional adjustments. Power terminations accept 50 mm² lugs, control wiring fits a 35 mm² range, and the EtherNet timer interface carries synchronization data without occupying extra I/O slots.
