PSI63C0.633-W1 Bosch Rexroth Indramat
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MPN: R911173786
The Bosch Rexroth Indramat PSI63C0.633-W1 is a medium frequency inverter in the PSI Frequency Inverters series and uses a water-cooled method with a cooling flow of 4 liters per minute. It supports a mains voltage of 400 to 480 VAC and has an IP20 degree of protection. The inverter features a nominal system current of 110 Amps and a maximum output current of 800 Amps.
Internal Product Review
The PSI63C0.633-W1 is a medium frequency inverter with water-cooled construction for 400 to 480 VAC systems. IP20 protection and MOV overvoltage protection support dependable integration in controlled industrial enclosures. An 800 A max output current stands out as a strong performance advantage for demanding power conversion duty.
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Product Description:
Bosch Rexroth Indramat’s PSI63C0.633-W1 belongs to the PSI Frequency Inverters series. It is classified as a medium-frequency inverter intended for induction power supplies and similar automation loads in automated production equipment. By converting a three-phase AC source to a controlled medium-frequency output, the unit provides precise energy delivery to heating coils, weld transformers, or rectifier stages where repeatable process power is required during demanding industrial heating or welding cycles.
Electrically, the inverter accepts a mains window of 400 – 480 VAC, matching standard plant distribution systems. Internal gating is synchronized by a 1 kHz clock frequency that stabilizes current loops and limits harmonic content. Under continuous operation, the power section can furnish 800 A of primary output, while the secondary side of the associated PSG-3100 transformer may reach 36 kA (PSG 3100) during short duty peaks. Routine processing runs at a nominal system current of 110 A. A protection level of IP20 keeps live parts finger-safe yet requires installation inside an electrical enclosure. The terminal bars accommodate conductors up to 50 mm², and control wiring can be landed on 35 mm² lugs.
The inverter is water cooled, so cabinet losses and semiconductor heat are routed to a process chiller instead of the surrounding air. During maximum load, the heat exchanger must reject 420 W of cooling loss, whereas idle electronics dissipate only 69 W of basic cabinet loss. A coolant flow of 4 l/min at an inlet temperature not exceeding 30 °C maintains these limits. Piping is connected through an M16 × 1.5 thread for both supply and return. Surge suppression is handled by MOV devices that clamp the DC link when transients occur. Sequencing of weld or heat cycles is triggered by its DeviceNet timer interface, allowing tight integration with PLC control.
