Product Description:

The PSI63C0.739-W2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. Designed to modulate high-voltage three-phase supplies, the unit feeds induction heating generators, hardening machines, or other process loads that require a precisely shaped medium-frequency output. By converting plant power into a controlled waveform, it allows automation controllers to regulate power delivery while keeping harmonics within drive limits. The device is intended for cabinet installation where water-based thermal management is available and protection against accidental contact is sufficient.

Accepting a supply between 480–690 VAC, the inverter synchronizes with plant grids operating at 50 or 60 Hz. This input range allows it to serve heavy-industry networks without external transformers. Heat produced by the power electronics is removed through a water-cooled circuit, and the maximum specified cooling loss is 420 W. Its housing has an IP20 degree of protection, so the drive must be mounted inside a closed panel while remaining accessible for service. Climatic category 3K3 under EN 60721-3-3 permits operation in production areas that experience moderate humidity and dust.

An integrated auxiliary supply delivers 24 VDC at up to 2 A, providing power for contactors, sensors, or the built-in Ethernet timer module. This timer module coordinates start sequences with higher-level controls. Continuous operation is permitted from +10 to +55 °C, while unpowered storage is permitted from −25 to +70 °C in unconditioned facilities. The inverter has a total mass of 25 kg, which must be considered when selecting panel supports and lifting equipment. Proper coolant flow helps control the temperature of the power semiconductors during repetitive industrial operation.