PSI62C0.710-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI62C0.710-W1 is a medium frequency inverter from the PSI Frequency Inverters series and weighs 56 kilograms. It supports a mains voltage of 400 to 480 VAC, operates with a maximum welding current of 54 kA, and uses water cooling with a minimum flow requirement of 4 liters per minute. The inverter has a height of 653 mm, a width of 288 mm, and a depth of 280 mm.
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Product Description:
The PSI62C0.710-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts three-phase mains power into a regulated medium-frequency output for precision resistance-welding guns and related automation stations. By supplying controlled current pulses to a welding transformer, the unit enables consistent heat input while reducing electrode wear and weld spatter, making it suitable for high-throughput automotive body lines and similar production cells.
The inverter connects to a plant supply of 400–480 VAC; this voltage range matches common industrial networks and eliminates the need for step-up transformers. Draw on that line is limited by a nominal mains current of 220 A, a rating that guides feeder breaker selection and cable sizing. Internally, the power stage synthesizes an output frequency of 1 kHz, shifting welding energy into the medium-frequency band for improved weld-nugget control and lower transformer mass. The process range extends from a minimum welding current of 9 kA to a peak of 54 kA, allowing the same inverter to cover thin sheet seams and thick projection welds. Cabinet thermal losses reach 210 W at maximum inverter current, so enclosure ventilation can be modest compared with air-cooled converters of similar power.
Heat generated in the power semiconductors is removed through a water-cooled heat sink; the cooling circuit must dissipate up to 700 W while maintaining a pressure drop no higher than 0.6 bar. To sustain that flow, the installation requires at least 4 L/min of treated water. Primary wiring is routed through a busbar set that requires conductors with a cross-sectional area of 95 mm² to carry surge currents approaching 1,200 A without excessive temperature rise. The enclosure measures 653 mm high, 288 mm wide, and 280 mm deep, allowing direct mounting in standard 600 mm cabinets. Its 56 kg mass can be supported by common panel brackets while still allowing front access to the Ethernet timer module for maintenance.
