| Brand | ROCKWILL |
| Numero ng Modelo | 12/24kV Solid Insulated Metal-enclosed ring main unit 12/24kV Solid Insulated Metal-enclosed ring main unit ng IEE-Business |
| Nararating na Voltase | 12kV |
| Narirating na pagsasalungat | 50/60Hz |
| Serye | CKSS |
Ang serye ng CKSS-12/24 ring main unit ay isang nakapalibot na metal na common tank enclosed switchgear, na binubuo ng load break switch unit, load break switch fuse combination electrical unit, vacuum circuit breaker unit, at ang incoming line unit ng bus. Ito ay gumagamit ng iba't ibang advanced na teknolohiya at materyales, may kahanga-hangang elektrikal at mekanikal na katangian, hindi masyadong naapektuhan ng kapaligiran at klima, maliliit ang sukat, madali ang pag-install, madaling gamitin, walang pangangailangan ng pamamahala, at maaaring mapalitan nang mabilis. Ang malinaw at direktang disenyo nito ay nagbibigay-buhay sa simple at tuwirang operasyon, malaking kakayahang koneksyon ng feeder, at angkop para sa iba't ibang sistema ng wiring.
Katangian
|
Kod ng unit |
Kahulugan |
|
C |
Pantay na load break switch unit |
|
F |
Kombinasyon ng load break switch at fuse |
|
V |
Apparatus unit |
|
D |
Cable unit (walang switch) |
|
+ |
Gilid ng casing ng busbar |
|
- |
Tuktok ng casing ng busbar |
|
SL |
Bus couple unit |
|
M |
Metering unit |
|
PT |
PT unit |
|
1K2(4) |
Double-sleeve outgoing load break switch unit |
Papel ng Teknikal
|
ltem |
Unit |
Load break switch unit |
Combination apparatus |
Fuse unit |
|
|
Rated voltage |
kV |
12/24 |
12/24 |
12/24 |
|
|
Rated frequency |
Hz |
50 |
50 |
50 |
|
|
Rated current |
A |
630 |
Depend on rated current of fuse |
630 |
|
|
P.F.withstand voltage (phase to phase.phase to earth) |
kV |
42/65 |
42/65 |
42/65 |
|
|
Ated insulation levels |
P.F.withstand voltage(Across open contacts) |
48/79 |
48/79 |
48/79 |
|
|
P.F.withstand voltage (Control and auxiliary circuit) |
2/2 |
2/2 |
2/2 |
||
|
Lightning impulse withstand voltage (phase to phase, phase to earth) |
75/125 |
75/125 |
75/125 |
||
|
Across open contacts |
85/145 |
85/145 |
85/145 |
||
|
Ogauge pressure test |
— |
Pass |
Pass |
Pass |
|
|
Rated short time withstand current |
kA |
20/4s/20/3s |
— |
20/4s/20/4s |
|
|
Rated peak withstand current |
kA |
63 |
—— |
63 |
|
|
Rated short circuit making current |
kA |
50 or 63 |
Subject to high-voltage fuse |
50 |
|
|
Rated short circuit breaking current |
kA |
— |
Subject to high-voltage fuse |
20/20 |
|
|
Rated transform current |
A |
— |
1750/1400 |
— |
|
|
Rated active load breaking current |
A |
630 |
— |
— |
|
|
Rated Closed loop breaking current |
A |
630 |
— |
630 |
|
|
Mechanical life |
Load break switch/breaker |
Time |
5000 |
5000 |
10000 |
|
Isolating switch/earthing switch |
5000 |
5000 |
5000 |
||
|
Loop resistance |
μΩ |
≤120 |
— |
≤120 |
|
|
Inflation pressure |
Rated inflation pressure(absolute pressure) |
bar |
1.3 |
1.3 |
1.3 |
|
Minimum inflation pressure(absolute pressure) |
1.2 |
1.2 |
1.2 |
||
|
Relative rate leakage of gas |
% |
≤0.02 |
≤0.02 |
≤0.02 |
|
Pansin: l :Neutral point earthing system through low resistance
