PSI63C0.720-W2 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI63C0.720-W2 is part of the PSI Frequency Inverters series and features a water cooling type along with an IP20 degree of protection. It supports a control supply voltage of 24 VDC, fieldbus interface via Ethernet such as PROFINET, and operates at mains voltages between 480 and 690 V at 50 or 60 Hz. This inverter has a maximum output current of 800 A, a nominal system current of 110 A, and can operate at ambient temperatures up to 55 degrees Celsius.
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Product Description:
The PSI63C0.720-W2 is a frequency inverter manufactured by Bosch Rexroth Indramat within the PSI Frequency Inverters series. It converts high-voltage three-phase input into regulated output power for variable-speed operation of large industrial drives. An Ethernet-based fieldbus interface lets the unit exchange control data with higher-level automation systems used in rolling lines, presses, and other heavy-duty machinery. It is intended for applications where large motors must follow speed changes smoothly under varying load conditions.
The power section accepts a mains supply range of 480–690 V at 50/60 Hz, while the control electronics use a separate 24 VDC supply that keeps the logic circuit isolated from the main power stage. A switching clock of 1 kHz sets the pulse-width modulation rate and balances response with motor acoustic behavior. Water cooling removes heat directly from the IGBT modules, allowing continuous output of up to 800 A without derating. The inverter also has a nominal system current of 110 A during steady-state operation. Metal-oxide varistor overvoltage protection limits transient spikes on the DC link, and operation is permitted at installation altitudes up to 2000 m above sea level.
The unit can operate in ambient temperatures up to 55 °C when cabinet airflow remains unobstructed. Basic cabinet power loss is limited to 100 W, which reduces the amount of heat released into the enclosure. A housing rated IP20 helps protect against finger contact with live parts and is intended for installation inside closed switchgear. The enclosure format is suited to control cabinets where access to energized parts must remain restricted during operation. For short-circuit conditions, the connected transformer can deliver a peak secondary current of 36 kA in PSG 3100 applications, and the water circuit helps keep semiconductor junction temperatures within safe limits during such events.
