XGN-12 (TT) type solid insulated switchgear

XGN-12 (TT) is an intelligent and environmentally friendly switchgear, which is an important component of the distribution automation system. The XGN-12 (TT) type switchgear mainly has three functional units, namely V unit (circuit breaker unit), C unit (load switch unit), and F unit (combination electrical unit). When the system requires multiple units to be configured, they can be expanded on either side and arranged according to different design schemes to achieve different configuration requirements.

Each unit is structurally divided into three parts: instrument room, operating mechanism, and primary circuit. The instrument room can be equipped with microcomputer protection (intelligent controller) and other meters; The operating mechanism is a specialized ammunition operating mechanism, which can also be equipped with an electric operating mechanism; The primary circuit adopts APG automatic gel process to completely seal the bus, disconnector and arc extinguishing chamber in epoxy resin, and there are special joints connected with the bus.

The XGN-12 (TT) type solid insulated switchgear has the advantages of compact structure, full insulation, long service life, maintenance free, small space occupation, safety and reliability, and no environmental impact. It is widely used in industrial and civil ring networks and terminal power supply, especially suitable for small secondary distribution stations, switching stations, industrial and mining enterprises, airports, railways, commercial areas, high-rise buildings, highways, subways, tunnels, and other fields.

Usage environment

● Altitude: ≤ 5000 meters

Adapt to ambient temperature: --45C~+45C

Maximum daily average temperature:+40C, maximum annual average temperature+35C

Wind speed: not exceeding 34m/s

● Air relative humidity: ≤ 95% (+25C)

Ground inclination: ≤ 5C

Earthquake intensity: not exceeding 8 degrees

There is no fire, explosion, chemical corrosion, or severe vibration at the installation site

technical parameter

Product features

● Excellent performance epoxy resin

The XGN-12 (TT) type solid insulated fully enclosed switchgear room is produced using special epoxy resin as insulation material. This epoxy resin has excellent properties:

●Has excellent electrical insulation performance.

Dielectric strength

Volume resistivity

Tangent of dielectric loss angle

1. Heat resistance can reach over 200C, and it also has good insulation performance at high temperatures;

2. Stable chemical properties, excellent alkali resistance, acid resistance, solvent resistance, and good resistance to temperature aging and radiation aging;

3. The thermal conductivity coefficient is 80x 10-2-100x 10-2W/m.k, which is easy to dissipate heat;

4. It has high adhesion to various substances, compact molecular structure, high mechanical strength, and good protective effect on switchgear;

5. The curing shrinkage rate is small, generally 1%~-2%; The coefficient of linear expansion is also very small, usually 6 x 10-5/C. So the switch size is stable, the internal stress is small, and it will not crack at any time.

●Truly environmentally friendly green switchgear

●Unique switch structure

1. Not only can the main switch be equipped with electric operation, but also the isolation switch and grounding switch can be equipped with electric operation, strongly supporting the automation and intelligence of the distribution network;

2. All live parts are designed to be sealed, achieving a fully insulated and fully sealed structure with a protection level of IP67. They can work normally even after being immersed in water for a short time;

3. The opening and closing positions of the switch can be clearly observed from the observation window;

4. Modular design and phase separation design make unit combination and circuit expansion more convenient, and the insulation performance is better;

5. No SF6 gas insulation, never polluting, completely and completely environmentally friendly structure;

6. Clever mechanical and electrical interlocks meet the five prevention requirements and ensure the safety of personnel and equipment;

7. Exquisite appearance, soft and coordinated colors, providing users with a beautiful enjoyment.

● Comprehensive security performance

1. The solid insulated switchgear completely eliminates the application of SF6, avoiding explosion accidents caused by insufficient gas pressure in SF6 ring main unit, which leads to a decrease in insulation performance and arc extinguishing ability.

2. Adopting a vacuum arc extinguishing chamber with explosion-proof performance, the solid insulation layer provides further protection for the switch, ensuring the safety of equipment and personnel.

3. The modular phase to phase isolation structure completely avoids accidents caused by phase to phase short circuits or multi circuit short circuits.

4. The "five proof interlocking" between the circuit main switch, isolation switch, and grounding switch box cabinet door ensures the safety of maintenance personnel.

5. The opening and closing positions of each phase of the switch can be clearly seen through the official window, enhancing the safety of operation and maintenance.

The high glass transition temperature of epoxy resin ensures that the insulation ability of epoxy resin and silicone rubber will not decrease at high temperatures.

7. Flexible fillers are used between the epoxy water insulation layer and the switch secondary conductor to eliminate stress caused by thermal expansion and contraction, and to avoid the occurrence of cracks.

8. The use of full gear transmission within the operating mechanism improves its reliability.

9. The protection level of the solid insulation switch reaches IP67, and it can operate normally even when immersed in water.

10. The switch position indicator is installed on the operating spindle, enhancing the accuracy of the indication.

Product installation