PSI63C0.168-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.168-W2 is a medium frequency inverter from the PSI Frequency Inverters series. It operates with a control supply voltage of 24 VDC and handles mains voltages of 480 to 690 VAC. The unit is water cooled with a cooling water flow rate of 4 liters per minute and provides a maximum output current of 800 Amps.
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Product Description:
The PSI63C0.168-W2 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for induction heating, welding, or other processes that rely on controlled medium-frequency power, the unit converts three-phase mains energy into a regulated output suitable for industrial automation equipment. It interfaces with higher-level controllers through an isolated control interface and supplies the precise current and frequency needed to drive secondary transformers or resonant loads in production lines.
At the input, the inverter accepts a three-phase mains supply of 480-690 VAC, which is switched at a carrier rate of 1 kHz to produce the medium-frequency output waveform. The internal power stage is sized for a nominal system current of 110 A, and it can handle transient demands up to 800 A without derating. Control electronics and the integrated timer are both powered from a separate 24 VDC supply, allowing safe startup and monitoring when the main bus is absent. Metal-oxide varistor overvoltage suppression limits line spikes, and terminals up to 50 mm² can be landed on the power block, matching the 35 mm² wire range typically used for feeder conductors.
Thermal management relies on a water-cooled plate exchanger connected through an M16x1.5 metric thread. A flow rate of 4 L/min keeps the semiconductor modules within limits as long as the incoming water does not exceed 30 °C. The enclosure is rated at IP20, so installation is intended inside a switch cabinet where ambient air can rise to a maximum of 55 °C without affecting rated performance. On the load side, the converter can deliver a peak secondary current of 36 kA, making it suitable for high-current induction coils, while the specified wire and terminal sizes support heavy-duty operation.
