Product Overview
GSR6-12/24/40.5 series environmentally friendly gas-insulated metal-enclosed switchgear (C-GIS) which uses dry air or N2 as the insulation medium is developed by our company. It is a new generation of MV equipment assemblies integrating vacuum arc extinguishing technology, APG solid insulation technology, gas insulation technology and interface insulation technology. Products can be widely used in various important power distribution and transformation systems in the national economy, such as transmission and substation networks, urban power supply networks, large industrial and mining enterprises, petrochemical industry, metallurgy, urban rail transit and other fields.
The product has a modular design, and the solution can be flexibly combined according to different requirements. The products are provided with a sealed pressure system, all the HV live parts of the main circuit are sealed in the stainless-steel gas tank, which is not affected by the environment. The products have the characteristics of intelligence, reliable operation, small size and maintenance-free.
- Product Features
- Quality assurance
- Adopt internationally advanced concepts, world-class production, testing methods, laser welding, laser cutting, helium leak detection and other equipment.
- Green and high efficiency
- The primary component of the product adopts a fully sealed design, which is completely sealed in a sealed gas tank welded by stainless steel plates and filled with a certain pressure of dry air (D-air) or N2 insulating medium. The protection level reaches IP67, completely avoiding the impact of the external environment and climate on the switchgear. It can operate reliably in harsh environments such as basements, plateaus, frozen soil, coastal areas and humidity, achieving maintenance-free operation.
- Safe and reliable
- The product can be operated manually or electrically. The operating mechanism is mature and reliable and it has completed mechanical and electrical interlocking, which can effectively prevent personal injury and equipment damage caused by mis operation.
- Compact design
- The product design has a compact structure. Compared with the traditional air insulated switchgear, the volume is significantly reduced and the floor area is reduced by 30%-70%, which improves space utilization and effectively reduces the overall project cost.
Technical parameters
|
No. |
Description |
Unit |
Parameter |
|||
|
1 |
Rated voltage |
kV |
12 |
24 |
40.5 |
|
|
2 |
Rated frequency |
Hz |
50 |
|||
|
3 |
Rated current |
A |
1250/2500/3150/4000 |
1250/2500 |
||
|
4 |
Rated Insulation level |
Rated power frequency withstand voltage(phase to phase, phase to ground) |
kV |
42 |
65 |
95 |
|
Rated power frequency withstand voltage(Isolated open contacts) |
48 |
79 |
118 |
|||
|
Rated lightning impulse withstand voltage(phase to phase, phase to ground) |
75 |
125 |
185 |
|||
|
Rated lightning impulse withstand voltage(isolated open contacts |
85 |
145 |
215 |
|||
|
Rated power frequency withstand voltage of auxiliary circuit rated |
2 |
2 |
2 |
|||
|
5 |
Rated short-time withstand current |
kA |
25/31.5/40 |
|||
|
6 |
Rated short-circuit duration |
s |
3 |
|||
|
7 |
Rated peak withstand current |
kA |
63/80/100 |
|||
|
8 |
Rated short-circuit breaking current |
kA |
25/31.5/40 |
|||
|
9 |
Rated short-circuit making current(peak) |
kA |
63/80/100 |
|||
|
10 |
Rated cable charging breaking current |
A |
25 |
31.5 |
||
|
11 |
Rated operation cycle |
|
O-0.3s-CO-3min-CO |
|||
|
12 |
Insulation gas |
|
Dry air or N₂ |
|||
|
13 |
Mechanical life |
Circuit breaker |
times |
10000 |
||
|
Three-position disconnector |
5000 |
|||||
|
14 |
Dry air or N₂ Rated pressure(abs,20℃) |
Rated gas filling pressure(abs,20℃) |
MPa |
0.14 |
||
|
Minimum gas filling pressure(abs,20℃) |
0.12 |
|||||
|
15 |
Protection grade |
Sealed tank |
|
IP67 |
||
|
Switchgear body |
IP4X |
|||||
|
16 |
Dry air annual relative leakage rate(year) |
% |
≤00.1 |
|||
|
17 |
Rated power supply voltage of auxiliary circuit |
V |
DC48/110/220 AC220 |
|||
Switchgear dimension
|
Rated voltage |
Rated current |
Cabinet |
Width(mm) |
Depth(mm) |
Height(mm) |
|
12-24kV |
1250A |
Input/output |
600 |
1500 |
2400 |
|
PT |
1000 |
1500 |
2400 |
||
|
M |
600/1000 |
1500 |
2400 |
||
|
2500/3150/4000A |
Input/output/PT |
1000 |
1850 |
2400 |
|
|
40.5KV |
1250A |
Input/output |
900 |
2200 |
2400 |
|
PT |
1000 |
||||
|
2500A |
Input/output/PT |
1000 |
2200 |
2400 |

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