product overview
zzlw3 series product is indoor single phrase high voltage transmission equipment installed in position of positive wire. when double pole short trouble is generated in the dc side of the system, it will carry out breaking operation of the fault current and cut off fault end from system as dc fault current reduced to certain value.
application scope
hvdc flexible is new generation high voltage transmission technology and obtains extremely enormous application demand. resonant dc switch has been applied in zhoushan multiple ends hvdc flexible project installed in the position of dc positive line of system.when double pole short trouble is generated in the dc side of the system, it will carry out breaking operation of the fault current and cut off fault end from system as dc fault current reduced to certain value.
main technical parameters
|
no. |
name |
unit |
zzlw3-100 |
|
1 |
altitude |
m |
≤1000 |
|
2 |
ambient temperature |
℃ |
-25- 40 |
|
3 |
pollution grade |
|
ⅳ |
|
4 |
wind pressure |
m/s |
34 |
|
5 |
anti-seismic ability |
|
ag5 |
|
6 |
rated operation voltage |
kv |
200 |
|
7 |
rated operation current |
a |
5000 |
|
8 |
rated switching current |
a |
500 |
|
9 |
maximum continuous running current |
a |
5500 |
|
10 |
rated short time withstand current/endurance |
ka/s |
25/2 |
|
11 |
rated pressure of sf6 gas(20℃） |
mpa |
0.6 |
|
12 |
mechanical endurance |
|
10000 |
|
13 |
1min working frequency withstand voltage(between isolation distance) |
kv |
650( 145) |
|
14 |
1min working frequency withstand voltage(between poles and pole-to-earth) |
kv |
650 |
|
15 |
lightning impulse withstand voltage(between isolation distance) |
kv |
1050( 205) |
|
13 |
lightning impulse withstand voltage(between poles and pole-to-earth) |
kv |
1050 |
|
14 |
opening time |
ms |
|
|
15 |
closing time |
ms |
60±6
|