Installation and Commissioning Key Points of Electrical Meter Boxes
The correct installation and commissioning of electrical meter boxes are crucial to ensure their normal operation. Before installation, first conduct an appearance inspection of the electrical meter box. The product nameplate should be beautiful and tidy, the steel characters should be clear and accurate, and all data should be consistent with the certificate; there should be no blistering, peeling, pitting, etc. on the paint layer and plating layer; the glass should be free of scratches and flat, and the aluminum alloy inlays should be angular; the outlet labels and cabinet codes should be accurate; the installation indication marks on the shell of the concealed box should be correct for on - site installation; the incoming line compartment and meter compartment should have anti - theft measures such as lead seals or metering door locks; the process flow card should be firmly pasted and the work number should be clearly filled in.
During installation, ensure that the installation position of the electrical meter box meets the design requirements and is firm and reliable. For grounding, strictly follow the specifications to ensure good grounding and avoid safety hazards caused by poor grounding.
After installation, conduct commissioning. Use a 1000V megohmmeter to measure the insulation resistance of electrical meter box devices with a rated voltage of 1KV and below, and it should be not less than 5 megohms. Before the power - on operation test, carefully check the wiring inside the box to confirm that it conforms to the electrical schematic diagram, the wiring is correct, and the insulation resistance meets the standard. During the test, the outlet terminals of the components should have the correct voltage after being powered on; the opening and closing tests of electrical component switches should be smooth without jamming or over - load operation; for leakage - type components, the protection action should be triggered when the test button is activated; also confirm that the outgoing lines, switches, and meters are connected correctly without confusion or misalignment, so as to ensure that the electrical meter box can be put into normal and safe use.
