Environment-friendly Gas insulated Ring Main Unit GHXH-12

General introduction

GHXH-12 environmental protection gas insulated ring main unit series is a complete set of power distribution devices for 12kV, three-phase AC 50Hz, single busbar and single busbar segmented system. The product has the characteristics of simple structure, flexible operation, reliable interlocking, convenient installation, etc. It can provide satisfactory technical solutions for various application occasions and different users. The adoption of sensing technology and information technology, coupled with technical performance and simple and flexible configuration schemes, can meet the ever-changing needs of the market and are suitable for the requirements of grid intelligence.

The GHXH-12 environmental protection gas insulated ring main unit series is suitable for industrial and civil cable ring network and distribution network terminal projects. As the acceptance and distribution of electric energy, it is especially suitable for power distribution in urban residential areas, small secondary substations, opening and closing stations, cable branch boxes, box-type substations, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, stadiums , railways, tunnels and other places use.

GHXH-12 environmental protection gas-insulated ring main unit series meets relevant national standards, power industry standards and other standards. Its switches and main electrical components are integrated modules, the conductive parts between phases are solid insulation packages, the external wiring adopts shielded cable joints, and the functional unit connection bus adopts shielded insulated busbars. Therefore, the safety of use is greatly improved, the operating mechanism adopts a spring mechanism, and the mechanical life is more than 10,000 times. Its operation data and equipment status can be remotely monitored and monitored, and it can be unattended. It is a power distribution device with a kind of performance.

The following units can be selected in the cabinet to form an economical and practical power supply unit:

1. Vacuum circuit breaker unit (630A, 20-25kA)

2. Vacuum load switch unit (630A, 20-25kA)

Product Features 

1. Environmental protection

All materials used in product manufacturing are non-toxic and harmless substances. N2 or dry air is used as an insulating medium to reduce greenhouse gas emissions and achieve environmental protection purposes. No toxic and harmful substances are discharged during use. It can be recycled and reused, which determines the environmental protection of the use.

2. Wide range of application

Do not use any toxic and harmful gases, which determines the safety of the use environment. Whether in basements, in tunnels, on ships, and in various environments inside and out. The interior of the high-pressure chamber can be filled with dry air or nitrogen, which is suitable for harsh conditions such as: high altitude, strong wind and sand, low temperature, severe cold, high environmental protection requirements, frequent operation sites, safe explosion-proof sites, high salt fog, and safe use under condensation conditions . Fully insulated and fully enclosed, it is suitable for the equipment to continue to operate after taking some cleaning and drying measures after a short period of water inflow.

3. Maintenance-free

In addition to the operating mechanism, the GHXH-12 environmental protection gas-insulated ring main unit series is in a fully sealed state, the high-voltage switch part is completely sealed, so that cleaning and maintenance can be avoided, and the cost of operation and maintenance can be reduced.

The degree of automation of the switchgear is very high, and the online detection function will notify the user of the operation of the equipment in real time, which is more conducive to the automation of the distribution network, reduces labor operating costs, and reduces the production cost of power companies.

4. High security

Perfect interlocking and interlocking system, the three-phase isolating distance is clearly visible, avoiding the occurrence of misoperation accidents. The application of SF6 gas is cancelled, and the interphase isolation structure is strengthened to avoid the expansion or explosion accident caused by short circuit between phases or multiple circuits. The vacuum interrupter with the vacuum energy of the explosion-proof environmental protection gas cabinet is adopted, and the solid-sealed pole has further protection performance for the switch.

5. Easy to operate

The disconnectorand earth switchwith only one operating handle, and there is no need to identify and worry about mistakes. When the circuit breaker is running, the operating handle of the disconnectorand earth switch cannot be operated, and complex technical training is not required, which makes the operation extremely simple, to avoid operating errors.

Main Technical Parameter

Use Conditions

■-25~+45℃；Temperature: -25~+45℃;

■Maximum temperature: (24h average) +35℃;

■Average relative humidity (24h): ≤95%;

■ Altitude: ≤1500m;

■Seismic ability: 8 degrees;

■Protection degree: IP67 for live body sealing, IP4X for switchgear enclosure;

■The surrounding air should not be obviously polluted by corrosive flammable gas, water vapor, etc.;

■Places without frequent violent vibration, and the severity design meets various requirements under severe conditions;

■When used under normal environmental conditions exceeding GB/T3906, needs negotiation.