First, what is the ring network cabinet

Ring network cabinet is a kind of switchgear cabinet which can realize ring network power supply. According to the requirements of the primary main wiring, the manufacturer combines several (single circuit) switchgear cabinets into one cabinet or integrates several switching elements into multiple circuit cabinets. This combination or integrated metal-enclosed switchgear is mainly used in China's 10kV secondary power distribution system, used in foreign countries for 36kV and the following ring network power supply system, often referred to as the ring network cabinet.

Second, what is a solid cabinet and solid insulated ring network cabinet

Solid cabinet is known as solid insulated ring network cabinet, is the choice of solid insulating material as the main insulating medium of the ring network cabinet. The vacuum interrupter and its conductive connection, isolation switch, grounding switch, main bus, branch bus and other dominant electric circuit single or combination of solid insulating medium wrapped and encapsulated into one or several with a certain function, can be combined or extended again with fully insulated, fully sealed function of the module, people can touch the module exterior coated with a conductive or semi-conductive shielding layer and can be directly grounded to the ring net cabinet firmly!

Advantages and disadvantages of solid insulation ring main unit

Compared with gas insulated ring network cabinet, it has its own advantages and disadvantages:

1, no gas leakage and the risk of greenhouse effect, good environmental protection function, maintenance-free;　

2, epoxy resin cast as a whole sealing insulation structure, insulation function is reliable, strong environmental adaptability;

3, modular planning, small volume, product sensitivity, conducive to on-site assembly; on the road traffic situation is not good in remote areas, can be disassembled and transported, and then assembled, so that the delivery and installation methods are diversified;

4、New products, high cost, supporting imperfect;

5、 immature production process, high scrap rate;

6、Intelligent monitoring skills are immature, the effectiveness of the detection effect is yet to be improved.

Typical solid cabinet introduction

Typical solid cabinets correspond to two major factions: ① generation of solid cabinets for the main circuit of the vacuum circuit breaker or vacuum load switch + vacuum-insulated isolation / grounding switch; ② the second generation of solid cabinets for the main circuit of the vacuum circuit breaker or vacuum load switch + air-insulated isolation / grounding switch with visual breaks.

Advantages include: ① products and environmental harmony, the main circuit selection of solid materials for insulation, isolation and grounding of three-position switch selection of solid insulation or air insulation, the entire cabinet does not use SF6 gas, does not generate temperature gas, does not damage the ozone layer; ② high-functioning epoxy resin raw materials used to make the main circuit structure is more and more simplified, to complete the small, lightweight; ③ simplified operation of the institutional planning and products Modular planning, the number of parts is small, the life cycle of the suspension of gas pressure supervision, reduce the amount of maintenance, or even maintenance-free.
Labeling