Product Description:

The PSI6300.346-L1 belongs to the PSI Frequency Inverters series manufactured by Bosch Rexroth Indramat. Classified as a medium-frequency inverter, it modulates three-phase power for induction heating or welding equipment that requires tightly controlled medium-frequency output. In an automation cabinet, it provides the link between the incoming AC supply and the connected load. Supervisory commands are exchanged through the INTERBUS timer interface, allowing the inverter to operate as part of an automated process control system.

The inverter accepts a supply range of 400 to 480 VAC and has a nominal mains current of 110 A. Its internal rectification and resonance stages have a phase-to-ground limit of 480 VAC. The input permits a voltage margin of +10% at 480 V and -15% at 400 V. The primary bus bars are rated for 800 A, providing a low-impedance path for the high current delivered to the transformer section. The matching PSG 3100 transformer section can deliver up to 36 kA on the secondary side during short heating or welding pulses. A built-in auxiliary rail operates at 24 V DC and can supply 2 A to external sensors or contactors. Cabinet heat dissipation under full conversion reaches 360 W, while the power stage contributes an additional 170 W when switching at maximum current. These heat loads require sufficient airflow through the control enclosure.

The unit uses air cooling, and the control cabinet must also dissipate 69 W of basic losses through its ventilation system. Wiring lugs accept conductors ranging from 35 mm² to the 50 mm² clamp limit, supporting high primary currents without excessive connection resistance. The chassis measures 239 mm wide, 463 mm high, and 280 mm deep. These dimensions allow installation in a standard 600 mm control enclosure while leaving room for wiring and ventilation ducts. Upstream feeders must maintain the permitted input range to prevent reduced output or interruption during operation.