PSI64C0.739-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI64C0.739-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It is water cooled, has a degree of protection rated at IP20, and operates with a mains voltage range of 400 to 480 VAC at 50 or 60 Hz. The inverter weighs approximately 25 kilograms and features an integrated 24 VDC power supply unit with a maximum 2 A output current.
Internal Product Review
The PSI64C0.739-W1 is a medium frequency inverter with water-cooled thermal management that supports stable operation in demanding installations. The 400 to 480 VAC input and 50 or 60 Hz mains compatibility simplify integration across standard plant power systems. A 24 VDC integrated power supply rated to 2 A adds useful control-side support and rounds out a well-executed inverter package.
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Product Description:
The Bosch Rexroth Indramat PSI64C0.739-W1 is an inverter from the PSI Frequency Inverters series. Classified as a medium-frequency inverter, it modulates its DC link to supply induction coils or high-frequency motors used in industrial automation. By connecting directly to factory three-phase power and providing an embedded 24-volt auxiliary rail, the unit combines mains conversion and control power in a single enclosure. This arrangement simplifies cabinet layouts for heat-treatment furnaces, welding generators, and special-purpose spindles.
It uses a water-cooled plate to keep the internal semiconductor stack within safe junction temperatures during continuous full-power switching. The integrated power supply delivers 24 V DC at a maximum current of 2 A, providing power for PLC I/O, relays, or sensors without an external source. The inverter accepts a 400–480 V AC three-phase input at 50 or 60 Hz, matching common IEC power systems and eliminating the need for an autotransformer. These input limits establish the permitted bus voltage and ripple levels for the medium-frequency stage. Because the cooling water removes most waste heat, the electrical cabinet requires only limited airflow, which helps reduce particulate accumulation around the power electronics.
The housing has an IP20 protection rating, so the unit must be mounted inside a closed panel or rack. Under full excitation, the coolant circuit absorbs no more than 420 W of thermal loss, reducing the load placed on the facility chiller. Climatic endurance is rated as category 3K3, and the operating temperature range is +10 to +55 °C. Components can withstand temperatures from -25 to +70 °C during storage or transportation. The unit has a mass of 25 kg, requiring suitable handling equipment during installation, while its rigid mounting feet help limit vibration transfer into connected pipework. A built-in Ethernet timer interface synchronizes burst frequencies with upstream motion or process controllers, reducing external wiring and supporting deterministic sequencing.
