PSI64C0.778-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI64C0.778-W1 is a medium frequency inverter from the PSI Frequency Inverters series. It is water cooled, weighs approximately 25 kg, and has dimensions of 288 mm width, 653 mm height, and 280 mm depth. The inverter operates with a mains voltage of 400 to 480 VAC, a maximum primary current of 1600 A, and features an IP20 degree of protection.
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Product Description:
The PSI64C0.778-W1 is a medium-frequency inverter manufactured by Bosch Rexroth Indramat for the PSI Frequency Inverters series. Installed between the utility supply and an induction heating coil, it delivers adjustable, high-current, medium-frequency power for automated brazing, forging, and hardening cells. This regulated output allows the equipment to apply an appropriate amount of energy to each workpiece. Integration with a line controller is simplified by the Ethernet timer function, while the water-cooled construction keeps the power stage compact enough for installation inside production equipment.
The inverter accepts a three-phase line supply of 400 to 480 VAC and draws a nominal mains current of 220 A. Its water-cooled design transfers heat from the IGBT stack to an external chiller. At a flow rate of 4 liters per minute, the cooling circuit removes up to 700 W of thermal loss with a pressure drop of only 0.6 bar. An integrated power supply provides a regulated 24 VDC output at up to 2 A for auxiliary equipment. Cabinet heat losses range from 69 W to 210 W and should be considered when ventilation or air-conditioning capacity is selected. The inverter supports operation from either a 50 Hz or 60 Hz mains supply.
Short-term overload current reaches 1600 A, and a 95 mm² supply conductor cross section accommodates this peak. The converter has IP20 protection and an EN 60721-3-3 3K3 climatic classification. It can operate at ambient temperatures from +10 °C to +55 °C and at elevations up to 2,000 meters. Cooling water must enter below 30 °C, remain under 10 bar, and continue flowing during standby. Internal cooling losses are limited to 420 W when forced-air ventilation is used for the enclosure. The steel housing is 288 mm wide, 653 mm tall, and 280 mm deep, and it requires 100 mm of clearance above the unit for exhaust airflow. The approximate transport weight is 25 kg. The permitted storage temperature ranges from -25 °C to +70 °C.
Frequently Asked Questions about PSI64C0.778-W1:
Q: What cooling method does the PSI64C0.778-W1 frequency inverter use?
A: The PSI64C0.778-W1 inverter is water cooled to efficiently dissipate heat during operation.
Q: What climatic category does the PSI64C0.778-W1 inverter conform to?
A: This inverter is suitable for use in environments classified as 3K3 according to EN 60721-3-3 standards.
Q: What output voltage and current does the integrated power supply deliver on the PSI64C0.778-W1?
A: The PSI64C0.778-W1 provides a 24 VDC output voltage with a maximum current of 2 A from its integrated power supply unit.
Q: What are the supported mains voltage and frequency ranges for the PSI64C0.778-W1?
A: This model is designed for operation at a mains voltage between 400 and 480 VAC and supports both 50 and 60 Hz mains frequencies.
Q: What is the ingress protection rating of the PSI64C0.778-W1 frequency inverter?
A: The inverter has an ingress protection rating of IP20, which limits its use to indoor environments with minimal exposure to dust and moisture.
