The fully insulated and fully enclosed ring main unit switchgear is independently developed by Tianrun Company. The high voltage gas insulated switchgear adopts a modular design and can be arranged arbitrarily according to different design schemes, achieving a perfect combination of the common box unit and the expansion unit, meeting the flexible usage requirements of compact switchgear in various secondary transmission and distribution substations.
This GIS gas insulated switchgear is a completely sealed system. All live parts and switches are enclosed in a stainless steel shell, unaffected by the environment. The compact gis switchgear features reliable operation, safety guarantee, compact structure design, small space occupation, maintenance-free, and long service life.
Our high voltage switchgear for sale has passed the type test certification of the national high-voltage electrical appliance test center and is widely used in small secondary distribution stations, box-type switch stations, industrial and mining enterprises, airports, railways, commercial areas, high-rise buildings, expressways, subways, tunnels, and other places with harsh natural conditions.
Excellent Performance
Rationally designed to meet the functional requirements in practical applications.
Reliable power supply to ensure the stable operation of the power distribution system.
Compact structure and small size to save installation space.
Easy to install and operate flexibly, reducing the difficulty of construction and use.
High cost performance, providing superior performance while offering a price advantage.
Advanced Technical Concepts
Adhering to the design concepts of green and environmental protection in terms of ideas and concepts,gas insulated switchgear meets the current demand for environmentally friendly products.
| The Main Technical Parameters | ||||
| Items | Unit | Circuit-breaker unit | Load switch unit | |
| Rating voltage | kV | 12 | ||
| Rating frequency | Hz | 50 | ||
| Rating capacity | kA | 630 | ||
| 1Min power frequency withstand voltage | To the ground/interphase | kV | 42 | |
| Fracture | 48 | |||
| Lightning impulse withstand voltage | To the Ground/Interphase | kV | 75 | |
| Fracture | 85 | |||
| Rating short-time withstand current and duration | Main circuit | kA | 20/4S | |
| Ground circuit | 17.4/2S | |||
| Rating Peak withstand current | Main circuit | kA | 50 | |
| Ground circuit | 43.5 | |||
| Rating short circuit current(peak) | kA | 50 | ||
| Rating short circuit breaking current | kA | 20 | / | |
| Rating short circuit breaking current times | Times | 30 | / | |
| Rating operation sequence | 0-0.3S-CO- 180S-CO | |||
| Rating cable/line charging breaking test | kA | C2level | / | |
| Interphase ground fault breaking current | 17.4 | / | ||
| Rating active loans breaking current | A | / | 630 | |
| Rating closed loop breaking current | A | / | 630 | |
| Rated cable Charing breaking test | A | / | 10 | |
| 5%Rated active load breaking current | A | / | 31.5 | |
| Grounding switch close times | Times | 5 | ||
| loop resistance | uΩ | ≤140 | ||
| Rated gas pressure(20℃Presure) | MPa | 0.02 | ||
| Mechanical life | Vacuum switch | Times | 10000 | |
| Isolator | 3000 | |||
| Earthing switch | 3000 | |||
| Protection level | Enclose | IP4X | ||
| Gas box | IP67 | |||
| Operational power supply | V | AC220/DC220/DC110/ DC48/DC24 | ||
| Rated annual leakage rate | % | ≤0.1 | ||
| Cabinet Size(single circuit) | mm | 420×822x1420 | ||
| Tolerance to internal arc fault | kA/s | 20/0.5 | ||
| Moisture content in dry air | ppm | ≤150 | ||
Wide Applicability
Gas insulated switchgear is suitable for three-phase AC 50Hz, 12KV rated voltage distribution systems and can be applied in various places such as smart grids, urban distribution, building complexes, industrial enterprises, and other load centers' distribution stations and box-type switchgear stations.
Adapting to Market Trends
As switchgear with little or no SF6, gas insulated switchgear conforms to the future technological development direction and has a promising market prospect.
Normal use conditions
Ambient air temperature: upper limit +40℃, lower limit -40℃
Humidity: the daily average value of relative humidity shall not exceed 95%; the monthly average value shall not exceed 90%
Water vapor pressure: the daily average value shall not exceed 2.2 kPa; the monthly average value shall not exceed 1.8 kPa
Altitude not exceeding 2000m.
The ambient air is not obviously contaminated by dust, smoke, corrosive and flammable gases, vapors, or salt fog.
The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.6 kV.
Contact us to discuss your power distribution needs and get a customized solution from our expert team.
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No.788 Wenyi Road, Bihu Town, Lishui City, Zhejiang Province, China