| Brand | ROCKWILL |
| Numero ng Modelo | 17.5kV SF6 GIS para sa Ikalawang Pamamahagi / Ring Main Unit |
| Tensyon na Naka-ugali | 17.5kV |
| Larawan na Pagsasahimpapawid | 50/60Hz |
| Serye | NG7 |
Pakilala
Pangunahing Teknikal na Pamantayan
Ang serye ng NG7-17.5 switchgear ay isang uri ng modular na ganap na insulad at ganap na sealed ring network switchgear para sa medium voltage distribution network, ang NG7-17.5 serye ng switchgear ay maaaring gamitin sa loob o labas, kapag ginamit sa loob, karamihan sa komposisyon ng indoor opening at closing stations, maaaring i-install pagkatapos lumabas ng pabrika, walang espesyal na kagamitan, switchgear inflatable compartment protection level hanggang IP67. Kapag ginamit sa labas, ang box protection level ay karaniwang IP54, pangunahing ginagamit para sa medium voltage distribution network, ang kagamitan ay hindi naapektuhan ng mataas na altitude, kondensasyon, polusyon, maliliit na hayop, kemikal na substansya, at iba pang external environmental influences, maliit na laki, maintenance-free, malawak na ginagamit sa urban commercial centers, industriyal na concentration areas, paliparan, highways, at iba pang distribution network systems, ito ay hindi lamang nakakatulong sa flexible application ng line ring network, ngunit maaari ring idisenyo bilang dual power supply self-invested power supply upang matiyak ang reliabilidad ng power supply. Bago ang shipment, lahat ng aming unit modules ay factory tested.
Mga katangian teknikal ng produkto
Mga aplikasyon ng serye NG7-17.5 ng switchgear sa operasyon sa labas:
Pangunahing Teknikal na 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 |
Pangunahing disenyo ng wiring
