PSI64C0.738-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI64C0.738-W1 is a medium frequency inverter from the PSI Frequency Inverters series and weighs approximately 25 kg. It operates on a mains voltage of 400 to 480 VAC with a frequency of 50 or 60 Hz, and uses water cooling. The inverter offers IP20 protection and features an integrated 24 VDC power supply unit with a maximum output current of 2 Amps.
Internal Product Review
The PSI64C0.738-W1 is a medium frequency inverter with water-cooled thermal management. Operation on 400 to 480 VAC mains at 50 or 60 Hz supports clean integration into standard industrial power systems. An integrated 24 VDC supply with up to 2 A output adds useful control support, making this unit a strong choice for dependable inverter service.
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Product Description:
The PSI64C0.738-W1 is a medium-frequency inverter engineered by Bosch Rexroth Indramat for the PSI Frequency Inverters series. In production environments, the device links the three-phase mains to loads such as induction heaters, spindle drives, and specialized test rigs that require regulated medium-frequency power rather than a fixed mains frequency. By generating a controlled output at user-selected frequencies, the unit allows heating profiles, motor torque curves, or magnetic field strength to be adjusted with tighter tolerances than line-commutated equipment can provide.
Thermal management is provided through a water-cooled plate exchanger that draws heat from the IGBT modules, keeping junction temperatures within design limits during continuous operation. Because the enclosure is rated IP20, it must be installed inside a cabinet that provides additional protection from moisture, dust, and accidental contact. The rectifier and inverter bridge accept an input range of 400–480 VAC, so the same model can operate on both 400 V European grids and 480 V North American grids. The supported line frequency is 50/60 Hz, accommodating common industrial power systems in both regions. At maximum output, the converter transfers up to 420 W of heat into the coolant, so the connected pump and radiator must provide sufficient cooling capacity to prevent thermal derating.
The logic section is supported by an onboard supply that provides 24 VDC at up to 2 A. This output can energize compatible contactors, encoders, or fieldbus nodes without requiring a separate DIN-rail power supply. The inverter operates within an ambient temperature range of +10 to +55 °C, while the electronics tolerate nonoperating temperatures from -25 °C to +70 °C during transport or storage. Time-critical synchronization with upstream controllers is handled through an Ethernet-based timer channel, supporting coordinated operation in automated systems. Compliance with climatic class 3K3 supports operation under typical factory humidity and airborne dust conditions. The unit has a total mass of 25 kg, which must be considered when selecting cabinet supports, mounting hardware, and handling equipment.
