Product Description:

The PSI63C0.752-W2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. Installed inside a switch cabinet, it accepts three-phase utility power and delivers a regulated medium-frequency output for automation tasks that require controlled energy transfer, such as induction heating or resonant test rigs. Through internal pulse-width modulation and water-based heat removal, the unit maintains electrical stability while fitting into compact machine frames.

Its control electronics run on a clock of 1 kHz, giving the gating circuits the timing resolution needed for precise frequency synthesis. The power section is rated for an input envelope of 480 – 690 VAC across a three-phase supply, and metal-oxide varistor overvoltage protection limits line spikes that exceed this window. For short process bursts, the inverter can supply up to 800 A, so thermal extraction is critical. A water-cooled heat sink carries away losses, and a flow rate of 4 l/min keeps semiconductor junctions below their limit. The enclosure carries an IP 20 protection rating, which prevents finger contact and requires installation inside a closed cabinet. Cabinet losses of 140 W and cooling losses of 500 W are removed through the machine’s water circuit.

All auxiliary devices are powered from a 24 V DC control supply, and timing synchronization is handled by an EtherNet timer that interfaces with external controllers. During steady operation, the system draws a nominal current of 110 A, and reliable service is maintained up to an ambient limit of 55 °C provided the cooling water enters below 30 °C. Power terminals accept 35 mm² conductors, while the block capacity of 50 mm² allows larger feeders when required. MOV clamping, a three-phase topology, and clearly stated wire ranges simplify integration and support compliance with plant safety directives.