40.5KV 126KV 145KV 252KV series disconnector
discuss personally
| Brand | ROCKWILL |
| Model NO. | 40.5KV 126KV 145KV 252KV series disconnector |
| Rated voltage | 252KV |
| Rated normal current | 2000A |
| Series | GW |
Description
GW4 series disconnector adopts double column horizontal rotation structure, which is composed of three unipolar and operating mechanism. Each monopole consists of a base, a post insulator, and a conducting part. A rotating pillar insulator is installed at both ends of the base, and the contact arm and contact arm of the main electrical part are respectively fixed on the top of the pillar insulator. The operating mechanism drives one end of the pillar insulator to rotate, and drives the other end of the pillar insulator to reverse rotate 90° through the cross connecting rod, so that the conductive knife can turn on the horizontal plane to realize the isolation switch opening and closing. The opening state forms a horizontal insulation fracture.
Main Features
The conductive arm is made of rectangular aluminum alloy tube or aluminum alloy plate, high strength, light weight, large heat dissipation area, good anti-corrosion performance.
The contact part of the conductive arm adopts external pressure plate spring structure. The plate spring is made of alloy material with good elasticity, which can keep the contact pressure stable for a long time and overcome the drawbacks of the spring internal pull structure.
Technical parameter
Specifications |
Unit |
Value |
||||||
Model |
GW4-40.5 |
GW4-72.5 |
GW4-126 |
GW4-145 |
GW4B-252 |
|||
Rated voltage |
kV |
40.5 |
72.5 |
126 |
145 |
252 |
||
Rated current |
A |
2000 2500/4000 |
2000 |
2000/3150 |
2000 |
2000/3150 |
||
Rated frequency |
HZ |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
||
1min power frequency withstand voltage (r.m.s) |
Phase to phase/ to earth |
kV |
95 |
160 |
230 |
275 |
460 |
|
Across isolating distance |
kV |
118 |
160(+42) |
230(+73) |
315 |
460(+145) |
||
Lightning impulse withstand voltage (peak 1.2/50us） |
Phase to phase/ to earth |
kV |
185 |
380 |
550 |
650 |
1050 |
|
Across isolating distance |
kV |
215 |
380(+59) |
550(+103) |
750 |
1050(+200) |
||
Rated operating impulse withstand voltage（peak 250/2500μs） |
Phase to phase/to earth |
kV |
\ |
\ |
\ |
\ |
\ |
|
Across isolating distance |
kV |
\ |
\ |
\ |
\ |
\ |
||
Rated short-time withstand current (r.m.s) |
kA |
40/50 |
40 |
40 |
40 |
40/50 |
||
Rated peak withstand time |
kA |
40/100/125 |
100 |
100 |
104 |
104/125 |
||
Rated short-circuit withstand time |
S |
4 |
4 |
3 |
4 |
4/3 |
||
Wiring terminal static mechanical load |
Longitudinal |
N |
750 |
750 |
1000/1250 |
1000 |
1500 |
|
Horizontal |
400/500 |
500 |
750 |
750 |
1000 |
|||
Vertical |
500/750 |
750 |
1000 |
1000 |
1250 |
|||
Operational altitude |
m |
≤2000 |
≤2000 |
≤2000 |
≤2000 |
≤2000 |
||
Operating pollution class |
Class |
AG5 |
AG5 |
AG5 |
AG5 |
AG5 |
||
Mechanical life |
Times |
10K |
10K |
10K/5K |
10K |
10K/5K |
||
Radio interference level |
uV |
≤500 |
≤500 |
≤500 |
≤500 |
≤2500/500 |
||
bus-transfer current switching by disconnector |
bus-transfer current |
A |
1600 |
1600 |
1600 |
1600 |
1600 |
|
bus-transfer voltage |
V |
100 |
100 |
100 |
100 |
200/300 |
||
disconnector switch capacitive open current |
A |
\ |
\ |
1 |
1 |
1 |
||
disconnector switch inductive open current |
A |
\ |
\ |
0.5 |
0.5 |
0.5 |
||
The switching induced current capacity of the earthing switch |
Electromagnetic induction current |
A |
\ |
50 |
50 |
80 |
80/160 |
|
Electromagnetic induction voltage |
kV |
\ |
0.5 |
0.5 |
2 |
1.4/15 |
||
Electrostatic induction current |
A |
\ |
0.4 |
0.4 |
2 |
1.25/10 |
||
Electrostatic induction voltage |
kV |
\ |
3 |
3 |
6 |
5/15 |
||
