1.Summary
ZW32-12 series High Voltage vacuum breaker is a kind of outdoor voltage switch equipment with 50HZ three-phase alternating current and 12KV rated voltage.It apply to breaker and close the load current,overload current and short-circuit current in cities or country power distribution system.
2.Service Environment
·The height above sea level is not greater than 2000m;
·The ambient temperature upper limit is +45 ℃, lower limit -30℃;
·The wind pressure does not exceed 700Pa(wind speed 34m/s) ;
·There is no regular violent vibrations;
·Dirtiness class: Ⅲ class;·
3.Rated technical parameter of the breaker:
Project |
Unit |
Data |
|
|
Rated voltage |
kV |
11 |
|
|
Rated current |
A |
630 |
|
|
Rated short-circuit breaking current |
kA |
20 |
|
|
Rated closing current ( Peak value) |
50 |
||
|
Rated peak withstand current |
50 |
||
|
Rated short time withstand current |
20 |
||
|
Rated short-circuit keeping time |
s |
4 |
|
|
Rated frequency |
Hz |
50 |
|
|
Rated Insulating level |
Lightning impulse withstand voltage test (Peak value) |
kV |
75 |
|
1min power frequency withstand voltage |
42 |
||
|
Rated operate sequence |
|
O--0.3s--CO--180s--CO |
|
|
Rated Short-circuit Current On and Off Times |
Times |
30 |
|
|
Mechanical life-span |
10000 |
||
|
Rated working voltage (closing and switch-off coil) |
V |
AC220 |
|
|
Permit abrasion total thickness of active and static contactor |
mm |
3 |
|
|
Rated current of release over-current |
A |
5 |
|
|
Current ratio of the current transformer |
|
200/5,400/5,630/5, |
|
|
Contactor torque |
mm |
9±1 |
|
|
Contactor over-travel |
2±0.5 |
||
|
Average speed of breaking brake |
m/s |
1.2±0.2 |
|
|
Average speed of closing brake |
0.6±0.2 |
||
|
Times of breaking brake |
ms |
20~60 |
|
|
Times of closing brake |
20~55 |
||
|
Bounce time of closing brake |
≤2 |
||
|
Three-phase breaking or closing simultaneity |
≤2 |
||
|
Loop direct current resistance of each phase |
MΩ |
≤80 |
|
|
Power storage electric motor |
Rated voltage |
V |
DC/AC 220 |
|
Rated power |
W |
70 |
|
|
Power storage time |
s |
≤8 |
|
|
Quality |
kg |
85 |
|
4. External dimension and installation
4.1 External dimension and installation size (mm)
4.2 The installation drawing of the single pole-mounted
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