PSI6300.625-L1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat PSI6300.625-L1 is a medium frequency inverter from the PSI Frequency Inverters series. It has a maximum output current of 800 Amps, supports a mains voltage of 400 to 480 VAC, and operates with air cooling at temperatures up to 55°C. The inverter features IP20 protection and supports wire ranges up to 35 mm².
Internal Product Review
The PSI6300.625-L1 is a medium frequency inverter with 400 to 480 VAC mains voltage support, making the design well suited for stable industrial power conversion. Air-cooled construction and 800 A maximum output current make this Bosch Rexroth Indramat inverter a highly capable choice for demanding applications.
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Product Description:
The PSI6300.625-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat within the PSI Frequency Inverters series. The unit converts three-phase factory power into a regulated medium-frequency output for induction heating coils and other process loads in automated production lines. By modulating current at a constant clock rate, the inverter supplies stable power while coordinating with higher-level controls through a DeviceNet timer interface. This arrangement allows the connected control system to manage operating commands and monitor process activity during automated cycles.
The inverter has a basic cabinet power dissipation of 69 W, while losses rise to 170 W when the converter operates at maximum output. A switching clock of 1 kHz sets the rate at which the power transistors commutate, keeping ripple within acceptable limits for metallurgical heating applications. Logic circuits and I/O are energized by an isolated 24 V DC control rail. The power section accepts a three-phase supply ranging from 400 to 480 V AC and uses metal-oxide varistors to clamp overvoltage events. Forced air moves through the chassis, allowing the air-cooled unit to operate with inlet temperatures up to 45 °C and reject up to 360 W of heat through its vents. The IP20 housing is intended for installation inside a ventilated electrical cabinet that protects the inverter from direct contact and solid foreign objects.
The inverter can deliver a peak line current of 800 A, while the associated PSG 3100 secondary circuit conducts up to 36 kA into the workpiece. Continuous operation is based on a nominal system current of 110 A, providing a reference for conductor sizing and protective device coordination. Installation at altitudes up to 2000 m is supported without capacity reduction, provided the ambient temperature does not exceed 55 °C and cabinet airflow remains unobstructed. Power terminals accommodate 50 mm² copper lugs for secure high-current connections. The control side accepts 35 mm² wiring to limit voltage drop across the connected conductors. Adequate clearance around the ventilation openings is necessary to maintain airflow through the chassis during operation.
