| Brand | ROCKWILL |
| Numero sa Modelo | 17.5kV SF6 GIS para Secondary Distribution / Ring Main Unit |
| Naka nga boltahang rated | 17.5kV |
| Nasodnong peryedyo | 50/60Hz |
| Serye | NG7 |
Pakilala
Pangunahon Technical Parameter
NG7-17.5 serye switchgear mga modular fully insulated fully sealed ring network switchgear para sa medium voltage distribution network, NG7-17.5 serye switchgear ginagamit sa indoor, outdoor, kapag ginagamit sa indoor, karamihan sa komposisyon ng indoor opening at closing stations, maaaring i-install pagkatapos lumabas sa factory, walang espesyal tools, switchgear inflatable compartment protection level up to IP67. Kapag ginagamit sa outdoor, ang box protection level ay karaniwang IP54, ginagamit pangunahin para sa medium voltage distribution network, ang equipment ay hindi apektado ng high altitude, condensation, pollution, small animals at chemical substances at iba pa na external environmental influences, maliliit ang size, maintenance-free, malawakang ginagamit sa urban commercial centers, industrial concentration areas, airports, highways at iba pa na distribution network systems, ito ay hindi lamang nakakatulong sa flexible application ng line ring network, kundi maaari din itong idisenyo bilang dual power supply self-invested power supply para siguruhin ang power supply reliability. Bago ang shipment, lahat ng amuing unit modules ay natest sa factory.
Mga teknikal nga karakteristikas sa produkto
Paggamit sa serye NG7-17.5 switchgear sa outdoor operation:
Punong Teknikal nga Parameter
|
Item |
Unit |
Load switch unit |
Circuit breaker unit |
|
Rated Voltage |
kV |
17.5 |
17.5 |
|
Rated frequency |
Hz |
60 |
60 |
|
Rated current |
A |
400 |
400 |
|
Power frequency withstand voltage (phase-to-phase and relatively) |
kV |
38 |
38 |
|
Power frequency withstand voltage (between fractures) |
kV |
45 |
45 |
|
Power frequency withstand voltage (control and auxiliary loops) |
kV |
2 |
2 |
|
Lightning shock withstand voltage (phase-to-phase and relatively) |
kA |
95/110 |
95/110 |
|
Rated for short-term withstand current |
kA/s |
21/1s |
21/1s |
|
Rated peak withstand current |
kA |
54.6 |
54.6 |
|
Rated short-circuit closing current |
kA |
54.6 |
54.6 |
|
Rated short-circuit breaking current |
kA |
/ |
21 |
|
Rated transfer current |
A |
/ |
/ |
|
Rated active load breaking current |
A |
400 |
/ |
|
Rated closed-loop current |
A |
400 |
/ |
|
Mechanical life: load switch/circuit breaker |
- |
5000 |
10000 |
|
Mechanical life: isolation/grounding switch |
- |
1000 |
1000 |
|
Inflation pressure: Rated inflation pressure (G/C at 20°C) |
Mpa |
0.04 |
0.04 |
|
Gas leakage rate |
% |
≤ 0.01 |
≤ 0.01 |
Pangunahon nga wiring scheme
