PSI62C0.731-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI62C0.731-W1 is a medium frequency inverter, part of the PSI Frequency Inverters series. It features a maximum output current of 1200 Amps and supports mains voltages from 400 to 480 Volts AC. The PSI62C0.731-W1 is water cooled with a flow rate of 4 liters per minute and comes with IP20 protection.
Internal Product Review
The PSI62C0.731-W1 is a medium frequency inverter with water-cooled thermal management that feels well suited for sustained industrial duty. A 400 to 480 VAC mains range and 1200 A maximum output current make this model a strong option for demanding power conversion applications. IP20 protection adds practical value for dependable cabinet integration.
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Product Description:
The PSI62C0.731-W1 medium-frequency inverter is manufactured by Bosch Rexroth Indramat as part of the PSI Frequency Inverters series. It operates as the power conversion stage that shapes three-phase mains energy into controlled medium-frequency currents for processes such as induction heating, soldering, and hardening. By generating adjustable current envelopes, the unit supplies load coils with the precise energy profile required for repeatable thermal or electromagnetic treatment in automated production lines.
The inverter accepts a mains window of 400–480 VAC, while its logic circuits run from an isolated 24 V DC supply. Gate patterns are refreshed at a 1 kHz clock, and the continuous service current is rated at 220 A. Short-duty surges can rise to 1200 A on the output and 54 kA on the transformer secondary loop without exceeding component limits. Pulse timing is coordinated through an EtherNet timer interface so the drive can track external sequence controls. Basic cabinet loss is 69 W and increases to 210 W when the inverter delivers maximum power, while the cooling circuit must absorb up to 700 W. Operation is permitted as long as the surrounding electronics bay remains at or below 55 °C.
Heat is removed by water cooling that requires a flow of 4 l/min, and the inlet temperature may not exceed 30 °C to keep semiconductor junctions within their limits. Stainless fittings with an M16 × 1.5 thread provide the water connection, and the installation requires 100 mm of clearance above and below the chassis for hose routing, convection space, and service access. Installations are supported up to 2000 m altitude, after which derating is necessary. The enclosure carries an IP20 degree of protection, so the unit must be placed in a clean, dry control cabinet. Power terminations accommodate conductors up to 95 mm².
