Which company is stronger in detecting low opening switchgear? BAIJIAN - a professional third-party testing and inspection platform that provides relevant testing and inspection services such as low opening and closing cabinet testing. It provides authoritative CMA/CNAS testing reports with short testing cycles, low costs, and thoughtful services, making testing more than BAIJIAN The safety inspection methods for high and low voltage switchgear are as follows: 1. The dimensions of the cabinet body in width, depth, and height meet the requirements of the drawings, and the deviation of diagonal dimensions is ≤ ± 2mm; The dimensions of other key parts of the cabinet meet the requirements; 2. All types of connectors, installation plates, lifting rings, etc. on the cabinet should be installed correctly and securely connected. 3. The front and rear doors open and close freely, and the door opening angle> 90 °. 4. The paint parts of the cabinet are free from scratches, cracks, bubbles, and other phenomena, and the color is uniform and meets the requirements. 5. Doors, locks, hinges, lock rods, etc. are installed correctly, and gaps are rejected; There is no shaking phenomenon on doors, sealing plates, etc. 6. The cabinet, instrument panel, door panel, etc. are well grounded, and the grounding bolts are free of paint and other dirt. 7. Protective measures should be taken for installation plates, brackets, cable inlet and outlet holes, etc. that are prone to human operation injury or wire damage. 8. The cabinet is clean and free of foreign objects; There should be no oil stains, dirt, dust or other debris on the inner and outer surfaces of the sealing plate and door. 1. Voltage withstand test, to detect whether the leakage between the terminal (live or zero line) and the distribution cabinet shell exceeds the standard. It is required to generally output 0-5kV or some special requirements of 0-10kV and 0-20kV, with a current of 100mA, mainly to see if the breakdown current exceeds the standard. Generally, the voltage is required to have a slow rise and fall function, in accordance with GB-7251. 2. Grounding resistance test is used to check whether the grounding wire of the distribution cabinet is well connected to the shell. Generally, a 10A or 25A AC high current is used for testing. Based on the tested resistance value, it is judged whether it is qualified. Generally, national standards require a minimum of 100 ohm and comply with GB-7251. 3. For capacitor cabinets, a 0.5 level digital voltage meter head is required, and the general requirement is a range of 500V. 4. For capacitor cabinets, voltage regulators (three-phase) are required to adjust the voltage. Generally, the range is 500V5, electronic stopwatch 6, vernier, digital caliper 0-150mm or 0-200mm or 0-300mm 7, tape measure 3m or 2m8, steel ruler 9, torque wrench/wrench or torque driver, and the range depends on the customer's situation (between 0-700Nm) 10. Point inspection tooling (operation inspection tooling)