PSI6500.001-W1 Bosch Rexroth Indramat
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MPN: R911173853
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The Bosch Rexroth Indramat PSI6500.001-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It has a water cooled design, a nominal current of 660 A with cabinet cooling, and an IP20 degree of protection. Operating at a mains voltage of 400 to 480 VAC, the inverter weighs 70 kilograms and supports a maximum primary current of 2400 A.
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Product Description:
The PSI6500.001-W1 belongs to the PSI Frequency Inverters series produced by Bosch Rexroth Indramat. It is installed as a cabinet-mounted power stage that converts three-phase supply power for induction heating, welding, and similar medium-frequency processes in automated production lines. By modulating output current and voltage, the unit provides precise control of coils or transformers that operate within the required medium-frequency range. Its cabinet-mounted format allows the power stage to be integrated with the associated control, protection, and process equipment.
The inverter accepts an input voltage range of 400 to 480 VAC and draws logic power from a separate 24 VDC supply. With the required cabinet cooling, it can deliver a nominal output current of 660 A, while peak operation involves primary and secondary currents of 2,400 A and 120 kA, respectively. Pulse modulation operates at 1 kHz, aligning the output with common industrial medium-frequency heating and welding processes. Thermal management must account for a basic cabinet loss of 100 W and a cooling loss that can reach 4,400 W. The power connections accommodate 120 mm² conductors secured by M10 screws. The housing has an IP20 rating, making it suitable for installation in restricted-access cabinets or electrical rooms. Operation is permitted at altitudes up to 2,000 m. The medium-frequency operating range reduces the need for bulky line-frequency transformers, helping limit the required installation space and overall system mass.
The heat exchanger is water-cooled and requires a minimum flow rate of 10 L/min. At this flow rate, the coolant circuit has a pressure drop of 0.65 bar, while the maximum permitted system pressure is 10 bar. The coolant outlet temperature must remain below 30 °C to keep the power semiconductors within their permitted thermal limits. The liquid-cooling circuit must be sized to remove as much as 4,400 W of heat during continuous production. Proper coolant circulation is therefore necessary whenever the inverter operates under sustained load. The frame weighs 70 kg, so suitable lifting equipment and secure cabinet supports are required during installation. Adequate clearance around the cooling and electrical connections also helps prevent strain on attached lines and conductors.
