Terminal checking the circuit and control dial protecting setting is normal or not.
定期检查电路及控制仪表的各种保护设置功能是否正常。
2
Through dial switches the circuit breaker can set rated current, tripping time, instantaneous multiple and so on.
该断路器通过拨码开关完成整定电流、脱扣时间、瞬动倍数等参数的设定。
3
Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.