1. Low-voltage electrical appliances should be equipped in a place without violent vibration, and should have an appropriate height from the ground. It is necessary to connect the power cord such as the knife switch and the load switch to the fixed contact, and it is forbidden to hang the power cord on the knife switch.
2. Low-voltage electrical appliances should be vertically equipped. Especially for oil-immersed decompression starters. In order to avoid the insulating oil from spilling out of the oil tank, the inclination should not exceed 5 degrees; Bolts should be used to fix the support, not welding; The orientation of the equipment should be easy to operate, and the handle should be kept at a certain distance from the surrounding buildings so that it is not easy to be damaged.
3. The metal shell or metal bracket of the low-voltage electrical appliance must be grounded (or zeroed), and the exposed part of the electrical appliance should be covered with a protective cover, and the opening direction of the double knife switch should have equipment to avoid self-closing.
4. In the factory with flammable and explosive gases or dust, the electrical appliances should be sealed outdoors, and there are rainproof methods, and it is necessary to use explosion-proof electrical appliances for places with explosion risks.
5. The single-pole switch must be connected to the phase line. Low-voltage appliances for floor-standing equipment. The bottom of the equipment should be 100mm higher than the ground, and the title of the equipment and the circuit number or road type should be indicated on the panel of the equipment and low-voltage electrical appliances.
6. The protective oil layer on each touch surface should be removed before use, and the operation should be operated several times before the operation to check the action status. The static contact of the low-voltage electrical appliance should be connected to the power supply, and the moving contact should be connected to the load.
7. When using, the surface of the electrical contact should be kept clean. Smooth, excellent touch, the contact should have a satisfactory pressure, the action of each phase contact should be common, and the arc extinguishing equipment should remain intact.
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