PSI6300.637-W2 Bosch Rexroth Indramat
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MPN: R911335567
The Bosch Rexroth Indramat PSI6300.637-W2 is a medium frequency inverter that is part of the PSI Frequency Inverters series. It operates with a mains voltage range of 480 to 690 VAC, a max output current of 800 Amps, and a nominal system current of 110 Amps. The inverter uses water cooling with a flow rate of 4 liters per minute and supports a control supply voltage of 24 VDC.
Internal Product Review
The PSI6300.637-W2 is a medium frequency inverter with 3-phase input, well suited for stable industrial power conversion. Water-cooled construction and 800 A maximum output current give the inverter excellent thermal control and strong high-load capability. Support for 480 to 690 VAC mains voltage makes the package especially appealing for higher-power installations.
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Product Description:
The PSI6300.637-W2 medium-frequency inverter is produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. Designed for induction heating and other high-current industrial processes, the unit converts utility power into a regulated medium-frequency output that can be modulated by a DeviceNet timer to match process demands. When paired with suitable rectifiers and resonant loads, it supplies controlled energy to the connected equipment. The regulated output supports applications that require precise control over energy delivery during each operating cycle.
The inverter accepts a three-phase mains range of 480–690 VAC, allowing direct connection to high-voltage plant distribution without step-down transformers. Internally, a clock frequency of 1 kHz drives the IGBT bridge; this switching speed sets the fundamental output frequency resolution and limits ripple in the load circuit. Maximum output capability reaches 800 A, providing the peak current needed for startup or rapid thermal cycles. Heat dissipation into the cabinet is 100 W after accounting for heat removed by the water circuit, so enclosure ventilation requirements are modest. The enclosure has a protection rating of IP20, providing protection against accidental contact with internal components but not against water. The inverter uses a water-cooled thermal design, and an MOV network clamps overvoltage events on the DC link. Its terminals accept conductors from 35 mm² to 50 mm², providing flexibility when selecting power cables for the installation.
The water circuit supports a flow rate of 4 L/min through M16 × 1.5 ports and is designed for an inlet temperature of 30 °C. Under these conditions, the heat exchanger removes up to 500 W from the power stage. The control electronics operate from a separate 24 VDC supply, isolating the logic circuits from the high-energy path. During steady operation, the inverter delivers a nominal system current of 110 A. Ambient air near the heat sink may reach 55 °C without requiring output derating. The DeviceNet timer coordinates firing patterns with upstream controllers, allowing the inverter output to follow process commands accurately.
