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PSI6100.146-L1 Bosch Rexroth Indramat

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Internal Product Review

The PSI6100.146-L1 is a capable medium frequency inverter with 400 - 480 VAC mains voltage. Air-cooled design and IP20 protection support dependable performance in enclosed industrial installations. A 400 A maximum output current makes the unit an excellent choice for high-demand power applications.

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Product Description:

The PSI6100.146-L1 is a medium-frequency inverter produced by Bosch Rexroth Indramat for the PSI Frequency Inverters series. It converts three-phase plant power into controlled medium-frequency energy for induction heating, brazing, and similar industrial processes, providing regulated current and voltage that help maintain precise thermal profiles in automated production cells. When paired with a dedicated transformer and process coil, the unit supports rapid ramp-up and stable hold periods in high-throughput forging lines and other heat-based manufacturing systems. Its controlled output is suited to applications that require repeatable heating cycles and fast process response.

An internal oscillator pulses the IGBT bridge at 1 kHz, producing a near-sinusoidal medium-frequency waveform that helps reduce eddy losses in the workpiece. Control logic and the auxiliary timer are energized from a separate 24 V DC line, which isolates signal electronics from the main bus. The power section accepts supply ranges of 400–480 VAC and can furnish up to 400 A of continuous output to the coil. Short, high-energy demands are supported by a permissible secondary crest of 20 kA, while forced-air channels guide heat away from semiconductors and inductors during sustained operation. Basic cabinet loss is 69 W at idle and rises to 170 W at rated throughput, while full-load cooling loss can reach 360 W.

For mounting inside a switchboard, a clearance of 100 mm around the heat exchanger inlet and outlet is required to sustain the intended airflow. The busbars are rated for a nominal system current of 110 A, and the power terminals accept crimped conductors up to 50 mm². The enclosure has an IP20 protection level for installation in dry, finger-safe cabinets, and integrated metal-oxide varistors clip overvoltage events across the DC link to help limit component stress during line transients.

Basic Cabinet Loss
69 W
Cabinet Loss At Max Power
170 W
Clock Frequency
1 kHz
Control Supply Voltage
24 V DC
Cooling Method
Air Cooled
Mains Voltage
400 - 480 VAC
Max Cooling Loss
360 W
Max Output Current
400 A
Max Secondary Current
20 kA
Min Clearance
100 mm
Nominal System Current
110 A
Overvoltage Protection
MOV
Product Type
Medium Frequency Inverter
Protection
IP 20
Terminal Capacity
50 mm²
Timer Type
24 V
Wire Range
35 mm²

Frequently Asked Questions about PSI6100.146-L1:

Q: What is the mains voltage requirement for the PSI6100.146-L1 inverter?

A: The PSI6100.146-L1 operates on a mains voltage range of 400 to 480 VAC.

Q: What is the maximum output current of the PSI6100.146-L1?

A: This model supports a maximum output current of 400 A for demanding applications.

Q: What type of overvoltage protection is featured on the PSI6100.146-L1?

A: The PSI6100.146-L1 offers overvoltage protection through integrated MOV circuitry.

Q: How is the PSI6100.146-L1 inverter cooled?

A: Cooling for this inverter is achieved using an air cooled method.

Q: What level of ingress protection does the PSI6100.146-L1 provide?

A: This unit is rated at IP 20, providing limited ingress protection against solid objects larger than 12.5 mm.

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