PSI65C0.729-W1 Bosch Rexroth Indramat
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MPN: R911336086
The Bosch Rexroth Indramat PSI65C0.729-W1 is a medium frequency inverter from the PSI Frequency Inverters series and weighs approximately 25 kilograms. It is water cooled and offers IP20 protection, operating at 400 to 480 VAC mains voltage and 50 or 60 Hz. The inverter features an integrated power supply unit with a maximum output of 2 Amps at 24 VDC.
Internal Product Review
The PSI65C0.729-W1 is a Bosch Rexroth Indramat medium frequency inverter with water-cooled thermal management. A 400 to 480 VAC input and IP20 protection support stable integration in controlled industrial enclosures. The 3K3 climatic classification and +10 to +55 °C operating range make this inverter a strong choice for dependable production service.
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Product Description:
The PSI65C0.729-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. The unit converts fixed three-phase mains power into a controlled medium-frequency output used to drive induction heating coils, high-speed spindles, or other loads that benefit from adjustable high-frequency power. In an automation cell, it serves as a regulated power stage that links the plant’s low-frequency supply to equipment requiring precise frequency, voltage, and current control. This arrangement allows the connected equipment to receive power tailored to its operating requirements while the inverter remains integrated with the surrounding automation system.
It connects to industrial feeders rated at 400–480 VAC and supports 50/60 Hz grid frequencies, allowing operation with commonly used industrial power systems. Heat generated by the power semiconductors is removed through closed-loop water cooling, limiting panel temperatures and supporting dense cabinet layouts. The enclosure has an IP20 rating, which protects internal components against accidental contact and solid objects larger than 12.5 mm. During full-load operation, the inverter produces up to 420 W of heat loss that must be considered when sizing the cooling system. Compliance with climatic category 3K3 under EN 60721-3-3 supports operation under the temperature, humidity, and pollution conditions associated with standard switch rooms. Adequate coolant flow and heat exchanger capacity are required to remove the specified thermal load during continuous operation.
The onboard control electronics provide a stabilized 24 VDC service rail that can supply up to 2 A for sensors, contactors, or fieldbus adapters, reducing the need for a separate power supply. The inverter operates at ambient temperatures from +10 °C to +55 °C, while its permitted storage and transport range extends from −25 °C to +70 °C. Ethernet timing circuitry supports synchronization with supervisory controllers and facilitates coordinated frequency ramps within an automated process. A mass of 25 kg must be considered when selecting mounting hardware and lifting equipment. The supporting cabinet structure should provide adequate load capacity and maintain secure alignment of the water and electrical connections.
