JSR6-17.5 series switchgear is a modular fully insulated and fully sealed ring main unit suitable for medium voltage distribution network.
JSR6-17.5 series switchgear can be used both indoors and outdoors. Most of them form indoor switch stations when used indoors, and can be installed after leaving the factory without any special tools. The protection level of the gas tank can reach IP67. When used outdoors, the protection level of the box body is generally IP54, and it is mainly used in medium-voltage distribution networks. The equipment is not affected by external environments such as high altitude, condensation, pollution, small animals, chemicals, etc., and is small in size and maintenance-free. It is widely used in the power field, such as urban commercial centers, industrial concentration areas, airports, and highways. It is not only conducive to the flexible application of line ring networks, but also can be used as a dual-circuit power supply and self-switching power supply to ensure power supply reliability. Our company conducts factory tests on all unit modules before delivery.
Maximum temperature: +75°C
Minimum temperature: -40°C
24hrs average maximum temperature: +35℃
Humidity: Maximum average relative humidity (24hrs measurement): 95%
Maximum average relative humidity (measured in 1 month): 90%
Installation without reducing gas pressure: Maximum altitude 1500m
Altitude: 4000 meters (Altitude can increase to 4000 meters and below)
Ambient temperature: Maximum temperature: +50℃; average temperature within 24 hours does not exceed 35℃.
Environmental humidity: 24hrs average relative humidity does not exceed 95%; monthly average relative humidity does not exceed 90%.
Installation environment: There is no explosive or corrosive gas in the surrounding air, and there is no severe vibration at the installation site. The impact and pollution level shall not exceed Level III in GB/T5582.
Earthquake-induced ground acceleration: less than 3g in the horizontal direction and less than 15g in the vertical direction.
According to IEC 62271-200, the manufacturer and the end user must agree on special operating conditions that differ from normal operating conditions. If particularly harsh operating environments are involved, the manufacturer or supplier must be consulted.
|
No. |
Item |
Unit |
C module |
V module |
|
1 |
Rated voltage |
kV |
17.5 |
17.5 |
|
2 |
Rated frequency |
Hz |
60 |
60 |
|
3 |
Rated current |
A |
400 |
400 |
|
4 |
Power frequency withstand voltage(Phase to phase , phase to ground) |
kV |
38 |
38 |
|
5 |
Power frequency withstand voltage (Fracture) |
kV |
45 |
45 |
|
6 |
Power frequency withstand voltage (Auxiliary and control circuit) |
kV |
2 |
2 |
|
7 |
Lightning impulse withstand voltage (Phase to phase, phase to ground) |
kV |
95/110 |
95/110 |
|
8 |
Rated short-time withstand current |
kA |
21/1s |
21/1s |
|
9 |
Rated peak withstand current |
kA |
54.6 |
54.6 |
|
10 |
Rated short-circuit connecting current |
kA |
54.6 |
54.6 |
|
11 |
Rated short-circuit breaking current |
kA kA |
/ |
21 |
|
12 |
Rated transform current |
A |
/ |
/ |
|
13 |
Rated active load breaking current |
A |
400 |
/ |
|
14 |
Rated closed-loop breaking current |
A |
400 |
400 |
|
15 |
Mechanical life span: LBS/CB |
Times |
5000 |
10000 |
|
16 |
Mechanical life span: Disconnector/Earth switch |
Times |
2000 |
2000 |
|
17 |
Rated gas filling pressure(20℃) |
Mpa |
0.04 |
0.04 |
|
18 |
Gas leakage annually |
% |
≤0.01 |
≤0.01 |
