PSI63C0.732-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.732-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It supports a mains voltage of 400 to 480 VAC at 50 or 60 Hz, operates with a nominal system current of 110 Amps, and provides a maximum output current of 800 Amps. The unit is air cooled, weighs approximately 20 kg, and offers IP20 protection.
Internal Product Review
The PSI63C0.732-L1 is a medium frequency inverter engineered for demanding power conversion, with air-cooled operation and a 400 to 480 VAC mains voltage range. IP20 protection and 800 A maximum output current make this Bosch Rexroth Indramat unit a strong choice for stable industrial inverter performance.
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Product Description:
The PSI63C0.732-L1 is part of the Bosch Rexroth Indramat PSI Frequency Inverters series. This medium-frequency inverter is intended for industrial automation lines that require controlled power conversion for induction coils or resonant loads. It accepts a three-phase mains connection and produces a regulated secondary current for accurate thermal or process control. Its cabinet-compatible design allows integration into standard industrial switchgear assemblies.
The inverter accepts an input range of 400 to 480 VAC at 50 or 60 Hz from a three-phase supply. A 24 VDC control supply powers the internal logic, while an integrated 24 VDC source provides up to 2 A for auxiliary sensors. The pulse module operates at a switching frequency of 1 kHz, supporting a nominal system current of 110 A and a peak output current of 800 A. Downstream busbars must tolerate a secondary surge of 36 kA that can occur in resonant circuits. Metal-oxide varistor protection diverts transient energy to protect the power electronics from overvoltage. The enclosure has an IP20 rating and requires 100 mm of clearance to maintain adequate airflow. Air entering the cooling path must not exceed 45 °C, while the electronics can operate at ambient temperatures from +10 to +55 °C. The permitted storage temperature range is -25 to +70 °C. Power terminals accept cable lugs for conductors from 35 mm² to 50 mm², and an EtherNet timer interface carries timing and diagnostic data.
Idle heat dissipation is 69 W, which establishes the continuous thermal load when process switching is inactive. Heat dissipation rises to 170 W under maximum controller loading, while process switching can increase total cooling losses to 360 W. Cabinet ventilation must account for these operating conditions and maintain the required inlet-air temperature. The unit complies with the 3K3 climatic category under EN 60721-3-3. Its total mass is 20 kg, which must be considered when selecting the mounting surface and fastening hardware. Adequate airflow around the enclosure helps limit internal temperatures during sustained current delivery.
