· Product model: ZW20PW
· Application places:10KV overhead distribution network,Substations, Industrial companies, Mining companies etc.
Features:
（1）Opening function is very good: 30 times for short current 20kA
（2）Low operate dissipation and high reliability: with new designed small electric spring, the quantity of parts and the operation dissipation(about 30W) are the lowest
（3）Maitainance free:the major loop of circuit breaker, 2nd electrical parts, drived device are sealed by SF gas(0 gauge pressure) and not affected by outside environment
（4）Sealing performance is good:the seal structure is mature and reliability is good
（5）Unique inline/outline way:the isolation distance is sufficient and the out isolation is very good with silicon rubber sleeve
（6）Installing way is flexible: can be polar mounted or seat mounted
（7）Safe to use:anti-explosion device is installed on the top of cabinet, the high temperature gas or spattering substance will not be leaked even if there is accident inner fault Size
Tech parameter :
|
NO. |
Item |
Unit |
Value |
|
01 |
Rated voltage |
KV |
12 |
|
02 |
Rated frequency |
Hz |
50 |
|
03 |
Rated current |
A |
630 |
|
04 |
Rated drop-out current |
KA |
20 |
|
05 |
Withstand current of rated peak current |
KA |
50 |
|
06 |
Rated short time withstand current（4s） |
KA |
20 |
|
07 |
Rated short making current(peak) |
KA |
50 |
|
08 |
Mechanical life |
Times |
10000 |
|
09 |
Open/close times of rated current |
Times |
10000 |
|
10 |
Open/close times of rated drop-out current |
Times |
30 |
|
11 |
Power frequency withstand voltage（1min）：phase、ground/fracture |
KV |
42/49 |
|
12 |
lightning impulse withstand voltage（peak）phase、ground/fracture |
KV |
75/85 |
|
13 |
2nd circuit 1min power frequency withstand voltage |
KV |
2 |
|
14 |
Net weight |
KG |
140 |