1.Summary
ZW8-12,ZW8-12G series high-voltage vacuum breaker is a kind of outdoor high-voltage switch equipment with 50Hz tree-phase alternating current and 15kV rated voltage.It mainly apply to break and close the load current,overload current and short-circuit current in country power net,city power net and minitype power system.The general framework of this product is adopted the form of three-phase using same box,i.e.put the three-phase are-extingguishing chamber inside of the metal box. For the SMG material has the advantage of space insulation and grounding insulation,the breaker has perfect performance and high insulation strength.
ZW8-12G is composed of ZW8-12 breaker and disconnecting link that we calledcombination breaker. It can be using as sectional switch.
2. Main Parameters
No. |
Project |
Unit |
Data |
|
1 |
Rated voltage |
kV |
15 |
|
2 |
Rated current |
A |
630 |
|
3 |
Lightning impulse withstand voltage test (Peak value) |
kV |
110 |
|
4 |
1min power frequency withstand voltage |
50 |
|
|
5 |
Rated short-circuit breaking current |
kA |
20 |
|
6 |
Rated closing current ( Peak value) |
50 |
|
|
7 |
Rated peak withstand current |
50 |
|
|
8 |
Rated short time withstand current |
20 |
|
|
9 |
Rated short-circuit keeping time |
s |
4 |
|
10 |
Rated frequency |
Hz |
50 |
|
11 |
Rated operate sequence |
|
Switch-off - 0.3s – switch-on/off- 180s – switch-on/off(the electronic device) |
|
12 |
Rated Short-circuit Current On and Off Times |
Times |
30 |
|
13 |
Mechanical life-span |
10000 |
|
|
14 |
Rated working voltage (closing and switch-off coil) |
V |
AC220 |
|
15 |
Rated current of release over-current |
A |
5 |
|
16 |
Current ratio of the current transformer |
|
200/5,400/5,630/5, |
|
17 |
Permit abrasion total thickness of active and static contactor |
mm |
3 |
|
18 |
Quality |
kg |
160 |