The function and wiring requirements of high and low voltage switchgear

The function of high-voltage switchgear is to enable users to obtain power from two directions, improve power supply reliability, and have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. Therefore, it is widely used in distribution stations and box type substations of load centers such as urban residential areas, high-rise buildings, factories and enterprises.

Structural characteristics of high-voltage switchgear:

1) The load switch used is an independent unit filled with sulfur hexafluoride gas as an insulation medium, with long service life, high parameters, no pollution, and minimal maintenance;

2) The switchgear can easily form switch power supply units and other wiring methods, and can be infinitely extended;

3) The shell is made of high-quality steel plate or aluminum zinc coated plate according to the user's needs, which has the advantages of corrosion resistance, oxidation resistance, novel and beautiful appearance structure, etc;

4) Spring energy storage operation, three-phase automatic tripping, integrated five prevention interlocking and operating mechanism, safe and reliable linkage;

5) Adopting sulfur hexafluoride load switch, the comprehensive performance is safe and reliable, oil-free and non-toxic, and there is no risk of fire or explosion;

6) The cabinet has a simple structure, easy operation, small size, light weight, and beautiful appearance.

Preparation and requirements for a number tube and label paper.

1. According to the circuit number drawn on the secondary wiring diagram, use a number printer to type on the number tube. The handwriting should be clear, evenly spaced, the characters should not be slanted, and the printed circuit numbers should be consistent with the drawings.

2. Bind the printed number tubes according to the contract number and cabinet number, and arrange them neatly for future use.

3. Use a printer to print component sequence numbers and text symbols on label paper according to the secondary wiring diagram. The font should be clear and not distorted or out of line.

4. Collect the printed label paper by cabinet number and pack it for future use.

Prepare construction notices, engineering system diagrams, electrical schematics, wiring diagrams, material lists, component layout diagrams, and other technical requirements related to the contract.

Preparation of three tools and materials: tools, number tubes, labels, wires, accessories, etc. for construction.

The function of high-voltage switchgear is to enable users to obtain power from two directions, improve power supply reliability, and have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. Therefore, it is widely used in distribution stations and box type substations of load centers such as urban residential areas, high-rise buildings, factories and enterprises.