XJ01 and JJ1B series auto-decompression starter boxes are suitable for AC 380V.Three-phase squirrel cages with a power of up to 300 kW should be used as a step-down starter.The method of stepping down the autotransformer is used to improve the impact on the transmission network when the motor is started.

1, the altitude does not exceed 200m;

2, the surrounding medium temperature is not high pressure +40 degrees is not lower than -10 degrees;

3. The relative humidity of the air is not more than 85%;

4. The amplitude is not more than 0.5mm, and the frequency is not more than 600 vibrations per minute;

5. The inclination from the vertical plane does not exceed 5 degrees;

6. In a medium without explosion hazard, and the medium is noon enough to corrode metals and destroy insulating gas and conductive dust.