Sikes Breaking Unit

Description

The LN series braking resistor units are often used with AC VFD’s to produce a braking torque in the motor during overhauling conditions. The dynamic braking resistor is connected across the DC bus and will see voltages as high as 800 volts.They can divert the regenerative energy which is produced in the process of braking of the motor, into a braking resistor, converting that energy into heat. The external design of the expansion modules is identical to the compact case of the LN series so that the installation can be performed easily in the switch cabinet next to the main module.

Key Features:

1. Long term high stability and wide compatibility for light duty.
2. simple connecting using a plug and can be installed in parallel.
3. conformity with CE FCC.
4. no configuration or commisioning required.
5. discharge resistor on board.

Characteristics:

1. Rated power: 7.5KW-132KW, based on 25℃ free air rating
2. Maximum braking current: 200A
3. Minimum resistance value: 3.8Ω( to R05 on request)
4. IP protection: IP00,IP20, IP23 or as required
5. Chopper voltage: DC660V±5V(Jump line), DC760V( to 1200V on request)
6. System voltage grade: 400V,
7. Terminal type:M4/M5/M8
8. ED(The efficiency of duty): 20%-80%,
9. Temperature Coefficients: 50,100 and 400ppm/℃ or as required
10. .Operating Temperature:-55℃ to +65℃
11. Insulation Resistance: >1000MΩ (500V 25℃ 75% relative humidity)
12. Dielectric strength: >3.0KV 50Hz 1min(25℃ 75% relative humidity)