PSI6200.147-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6200.147-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It operates at a mains voltage of 400 to 480 VAC and has a maximum output current of 1200 A. The unit uses water cooling, supports a cooling water flow of 4 liters per minute, and offers a protection degree of IP20.
Internal Product Review
The PSI6200.147-W1 is a medium frequency inverter designed for high-current industrial service, featuring water-cooled operation and a 1200 A max output current. Support for 400 to 480 VAC mains input and IP20 protection makes cabinet integration practical in controlled environments. Integrated temperature monitoring adds confidence in continuous operation, and the 54 kA max secondary current is a standout performance spec.
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Product Description:
The PSI6200.147-W1 medium-frequency inverter is manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts factory mains power into a controlled medium-frequency output for induction heaters, welding generators, or hardening coils in automated production equipment. A 24 VDC control section, an internal timer circuit, and built-in temperature monitoring coordinate switching sequences, allowing the power stage to operate within closed-loop process controls without an external control supply.
The power section accepts a three-phase input of 400–480 VAC at 50 or 60 Hz. Its internal clock operates at 1 kHz, providing precise timing for the pulse patterns delivered to the connected load. During continuous operation, the unit supplies a nominal system current of 220 A, while momentary demand can reach 1200 A when starting difficult workpieces. A metal-oxide varistor network limits overvoltage transients that could otherwise damage the power electronics. The integrated auxiliary supply delivers up to 2 A for connected sensors or contactors. Forced liquid cooling keeps semiconductor temperatures within operating limits, and the heat exchanger requires a flow rate of 4 L/min. The cooling water may enter at temperatures up to 30 °C, and the circuit removes 420 W of heat from the inverter. The hydraulic loop connects through an M16 × 1.5 threaded port, while 100 mm of clearance around the housing provides space for cables and water hoses.
The inverter can operate at elevations up to 2,000 m above sea level within climatic class 3K3 and humidity class F. Its metal enclosure has an IP20 protection rating and is intended for installation where direct contact with internal electrical parts is prevented. Permitted ambient temperatures range from +10 °C to +55 °C during operation and from -25 °C to +70 °C during storage. When used with a matching transformer, the maximum secondary current can reach 54 kA, and 95 mm² output conductors carry the resulting load. The unit has a total mass of approximately 25 kg, which must be considered when selecting the mounting surface and supporting hardware.
