Product Description:

The PSI63C0.750-L1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts three-phase mains power into a regulated medium-frequency output for induction heating stations, welding generators, and other automated processes that require tightly managed current and voltage. This controlled output helps maintain repeatable thermal behavior during automated production cycles. That makes it suitable for equipment where process repeatability is important.

The inverter accepts an input of 400-480 VAC and draws a nominal mains current of 110 A during steady operation. For brief load surges, the primary circuit can supply up to 800 A, while the matched PSG 3100 transformer permits a secondary pulse of 36 kA to reach the work coil. Heat produced by the switching elements is removed by air cooling, and when the converter is fully loaded, the cooling assembly dissipates 360 W. Residual enclosure warming under the same condition is limited to 170 W. The control electronics manage modulation patterns, voltage tolerance bands of 400 V (-15%) and 480 V (+10%), and diagnostic messaging sent through the integrated Ethernet I/O port. This supports stable control during rapid load changes common in pulsed industrial heating applications.

Fast internal calculations are handled by the TriCore CPU, and timing signals synchronized over Ethernet support repeatable heating cycles. Power wiring leaves the cabinet through lugs that fit a maximum conductor area of 50 mm², while control wiring may use a 35 mm² cross-section to conserve panel space. Installation requires a clearance of 100 mm around the housing to maintain airflow across the 280 mm deep and 463 mm high chassis. The Ethernet link supports supervisory communication and cycle coordination without requiring a separate proprietary network card. The cabinet layout must leave open space around the chassis so the cooling path is not obstructed by adjacent components or wiring ducts.