PSI65C0.325-W1 Bosch Rexroth Indramat
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MPN: R911174869
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The Bosch Rexroth Indramat PSI65C0.325-W1 is a medium frequency inverter that is part of the PSI Frequency Inverters series. It operates with a mains voltage of 400 to 480 VAC and has a maximum output current of 2400 Amps. This inverter uses water cooling with a required flow of 10 liters per minute and has an IP20 protection rating.
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Product Description:
The PSI65C0.325-W1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase electrical energy into a controlled medium-frequency output for a connected welding transformer. Within an automated welding line, the unit serves as the power stage between the plant supply and the secondary welding circuit. Its controlled output supports repeatable heating at the weld point, while the connected control system manages the timing required for each production cycle.
The inverter accepts a supply ranging from 400 to 480 VAC and delivers a nominal system current of 660 A. Pulse modulation operates with an internal clock frequency of 1 kHz, providing the switching timing used by the power stage. When process demand increases, the inverter can supply a peak current of 2400 A. The required cable cross-section is 120 mm² per cable, and the output uses M10 connection bolts to provide a low-impedance electrical path. Semiconductor heat is removed through a water-cooled heat sink with a coolant flow rate of 10 liters per minute. The maximum permitted water inlet temperature is 30 °C, which allows the cooling circuit to carry heat away from the power components. An INTERBUS timer interface coordinates switching sequences with the upstream control system.
Total thermal rejection can reach 4400 W at full load, so the connected cooling system must have sufficient capacity for the inverter’s heat output. The cabinet loss baseline is 100 W, while operation at maximum active power produces an additional 850 W that must also be considered when arranging enclosure cooling. Secondary current can reach 120 kA, and the coolant connection uses an M16 × 1.5 thread for secure hose attachment. The enclosure has an IP20 protection rating, so the inverter must be installed inside a suitable cabinet that prevents contact with hazardous internal parts. Ambient air must remain below 45 °C during operation. The unit has a height of 860 mm and a width of 396 mm, which determine the cabinet space needed for installation. Adequate clearance is also required around the electrical terminals, cooling connections, and cable-routing areas.
Frequently Asked Questions about PSI65C0.325-W1:
Q: What is the voltage input range supported by the PSI65C0.325-W1 inverter?
A: The PSI65C0.325-W1 inverter supports an incoming mains voltage range of 400 to 480 VAC for flexible installation in various electrical environments.
Q: What cooling method is used by the PSI65C0.325-W1 frequency inverter?
A: This inverter uses a water-cooled system with a recommended cooling water flow of 10 liters per minute, helping to maintain operational temperatures.
Q: What is the maximum output current for the PSI65C0.325-W1 inverter?
A: The PSI65C0.325-W1 has a maximum output current rating of 2400 A for high-demand power applications.
Q: What protection level does the PSI65C0.325-W1 inverter provide?
A: This frequency inverter is built with a protection rating of IP 20, which guards against solid objects larger than 12.5 mm but does not offer water protection.
Q: What are the cabinet losses for the PSI65C0.325-W1 frequency inverter at basic and maximum power?
A: The cabinet of the PSI65C0.325-W1 experiences a loss of 100 W at basic load and 850 W at maximum power, ensuring that heat dissipation is managed according to load conditions.
