thatVoltage resistance of circuit breakersWhat does' experiment 'refer to? How to use the correct experimental method for the product family?

Let's explore and decrypt together with Wei Kewei's FAECircuit breakerWhat does the DC withstand voltage test refer to?

BA series hydraulic electromagnetic type斷路器For example:

The main parameters are as follows:

1. Compliant with standards: IEC60934, GB17701, UL489AJUL1077,UL489

2. Rated working voltage: DC80V AC1 20/240V、AC240/415V、AC250V、AC277/480YV

3. Mechanical/electrical lifespan: 10000/6000 cycles, (according to UL489A)產品Electrical lifespan: 1000 cycles

4. Rated insulation voltage: AC415V; Rated impulse withstand voltage: 2500V

5. Certified by CCC, CE JUV ,UL1077,UL489A ,UL489

6. Auxiliary contact parameters: AC250V5A

7. Rated breaking capacity

Literally speaking, there is no defined parameter for DC withstand voltage. What we refer to as withstand voltage is generally斷路器The industry will be defined by rated operating voltage rather than DC withstand voltage. The index corresponding to the working voltage is determined by different certification and specification requirements, and the experimental indicators vary depending on the standards/certification content.

Many electrical designers confuse working voltage and withstand voltage index.

The definition of withstand voltage in the national standard GB17701 for low-voltage circuit breakers refers to the experiment on the insulation characteristics of the circuit breaker. The general experimental conditions are to apply different experimental voltages to the circuit breaker according to its rated voltage parameters. This experimental voltage refers to the withstand voltage of the circuit breaker.

This experiment is closely related to the insulation capability of the circuit breaker.

For more technical details, please call the hotline:

Li Sheng 18576410868 (same WeChat account)