| Chapa | ROCKWILL |
| Namba ya Modeli | 12/24kV Solide Insulated Metal-enclosed ring main unit |
| volts maalum | 12kV |
| mfumo wa mafano | 50/60Hz |
| Siri | CKSS |
Siri ya CKSS-12/24 ya ring main unit ni switchgear yenye tank zinazofanana yenye metal yenye uwekaji wa kifupi, inayojumuisha kitengo cha load break switch, kitengo cha mzunguko wa umeme na fujo, kitengo cha vacuum circuit breaker, na kitengo cha kuja kwa bus. Inatumia teknolojia na vifaa mbalimbali vya juu, na magari yake ya umeme na mekaniki ni nzuri, haiathiriwa sana na mazingira na tabianchi, ina ukubwa ndogo, rahisi kutengeneza, rahisi kutumia, haipaswi kuhifadhiwa, na inaweza kukabiliana kwa urahisi. Mfano wake unaoonekana kwa wazi unaleta utaratibu wa kutosha wa kufanya kazi, uwezekano mkubwa wa kuunganisha feeders, inafaa kwa aina mbalimbali za mifumo ya kuunganisha.
Sifa
|
Namba ya kitengo |
Maana |
|
C |
Kitengo cha kuzuia mwendo chenye mfumo wa kutumika moja tu |
|
F |
Mzunguko wa kuzuia mwendo na kuzuia viwango |
|
V |
Kitengo cha vifaa |
|
D |
Kitengo cha kabiki (bila kizuizi) |
|
+ |
Pakia upande wa mizizi |
|
- |
Pakia juu wa mizizi |
|
SL |
Kitengo cha kuhusisha mizizi |
|
M |
Kitengo cha ukimbiaji |
|
PT |
Kitengo cha PT |
|
1K2(4) |
Kitengo cha kuzuia mwendo kilicho na miaka mbili (nne) |
Cheti cha Tehniki
|
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 |
|
Maoni: l : Mfumo wa kusambaza chini kwa upana mdogo
