电表箱维护注意事项：

Cautions for meter box maintenance:

电表箱上的全部电器开关，应动作灵活可靠,无显着噪声，连接线结头和接线柱应无松动现象，动触头连接线结头处钢丝应无断裂现象。

All the electrical switches on the meter box should be flexible and reliable, with no significant noise. The connecting wire, the junction and the terminal shall be free of looseness, and the steel wire at the end of the contact wire of the movable contact shall be free of fracture.

更换熔丝时，应使熔断电流与该回路的电流相匹配。

When fusing the fuse, the fusing current should be matched with the current in the circuit.

控制箱上有不同性质的电压，在维修保养时必须分清电路，防止发生短路事故。

There are different voltages on the control box, and the circuit must be distinguished during maintenance to prevent short circuit accidents.

断开电源，检查控制柜的机架是否有可靠的接地，并使接地电阻不大于4Ω。

Switch off the power supply and check whether the frame of the control cabinet has a reliable grounding and make the grounding resistance not greater than 4 ohms.

用软刷或吹风清楚屏板插件和全部电磁开关零件的积尘，并检查控制箱内电器开关触头的状态，接触情况，线圈外表的绝缘以及机械部件的动作是否可靠。

Clear the dust shield plug and all parts of the electromagnetic switch with a soft brush or hair dryer, and check the control box of electric switch contact state, contact, coil insulation and mechanical components of the appearance of the action is reliable.