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。
The red and the voice prompts that circuit resistance is too high or too low.
红灯和声音提示表示电路阻值过高或过低。
The red and the voice prompts that circuit resistance is too high or too low.
红灯和声音提示表示电路阻值过高或过低。
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