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High and low voltage distribution cabinet safety technical requirements you have to understand!

Release time:

2023/01/23 20:18

Before using the switch cabinet and power distribution cabinet, it is necessary to know the usefulness between the two before finding out where it is suitable. Let's introduce the difference between switch cabinet and power distribution cabinet. What are the differences between switchgear and distribution cabinet? 1. The role is not the same: switch cabinet for power switch, distribution cabinet for power distribution equipment. 2. The appearance is different: the switch cabinet is larger and must be placed independently, while the power distribution cabinet is small and can be directly fixed in the wall. 3. Assembly site is not the same: switch cabinet is not more common, generally used in the room, schools and large shopping malls have power distribution cabinets. How to maintain the power distribution cabinet: 1. The power distribution cabinet has been applied for a long time, and the surface layer will cover many dust and dirt. If there is too much ash, there will be some restrictions in the middle and late stages. If you want to clear it again, it will become more and more difficult. In addition, the wiring head in the power distribution cabinet should be strong to avoid some common faults. 2. For the power switch inside the power distribution cabinet, it is also necessary to check frequently to see if the power switch can be normal. If it is wrong, it needs to be disassembled and replaced immediately to avoid being unable to apply it in case of emergency. It is also a very troublesome thing. Moreover, the location of the power distribution cabinet should avoid rainwater, otherwise there will be possible problems once soaked. 3. If the power supply plug in the power distribution cabinet has a heating phenomenon, it must be detected when shaking., To find the main reason, to deal. In addition, there are some exhaust fans in the internal structure of the distribution cabinet. It is necessary to regularly maintain the normal operation of this exhaust fan so that this risk factor can be reduced. The relevant introduction and difference between the switch cabinet and the distribution cabinet are the aspects mentioned earlier. There are some differences in the use of methods and modeling, when using must understand clearly.

To put it bluntly, the high-voltage and low-voltage distribution cabinet is a substation equipment used for distribution, manipulation, accurate measurement and connection of cables in the power supply and distribution system. The power supply bureau and distribution station generally use high-voltage switchgear, which is then led out to the low-voltage distribution cabinet through the low-voltage side of the transformer to reduce blood pressure. The low-voltage power distribution cabinet is transmitted to the power distribution box, control cabinet and switch box, and the internal structure assembles the power switch, isolating switch, circuit breaker, button, display lamp, instrument panel, cable and other protection equipment into a whole to meet the function requirements of the design scheme. Technical standards for high-voltage and low-voltage power distribution cabinets 1. distribution box, switch box box material, generally use thick steel plate, can also choose insulation board, but can not use wood plate. 2. The electrical box and switch box shall be assembled properly and firmly, and shall not be reversed or tilted. The bottom end of the fixed distribution box and switch box shall be more than 1.3m and not more than 1.5m vertically on the road surface. The safe distance between the bottom end of the mobile distribution box and switch box and the ground shall be higher than or equal to 0.6m and not more than 1.5m 3. It is strictly prohibited to connect the power supply to the voltage distribution cabinet with screws. 4. The distance between the power boxes is not suitable for very long. The distance between the distribution box and the switch box shall be less than 30m, and the vertical distance between the switch box and the fixed electrical equipment shall not exceed 3m. Each electrical equipment should have its own special switch box. Each electrical equipment on the construction site should have its own special switch box, which must meet the requirements. It is forbidden to use the same switch appliance to completely control 2 or more electrical equipment (including power sockets). The switch box must be equipped with a leakage protection switch. The rated leakage current shall not exceed 30ma, and the short-circuit posture duration shall not exceed 0.1s. 6. In order to ensure that all distribution box doors should be locked, distribution boxes and switch boxes should not be used in wild rivers or press-type other temporary electrical machinery and equipment, and dirt should not be placed in switch boxes. 7. The color of the outer coating of the distribution box (cabinet) shall be coated with electrostatic powder according to the requirements of Party A. The coating shall be firmly adhered, the color shall be symmetrical, and there shall be no potential safety hazards such as wrinkles, molting, color spots, spray leakage, etc. No significant color deviation and light return shall be observed at a distance of 1 meter. The surface shall be smooth and tidy, and there shall be no pits, scratches and other damages, many hot-dip galvanized parts used in the box (cabinet) must also ensure that there are no potential safety hazards such as molting, color spots, sand holes, rust, etc., and the appearance inspection must meet the same requirements. No dirt, dust, etc. In a small box (wooden cabinet).

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