Description
ZW27A-12 type oil-free ac high voltage vacuum circuit breaker on outdoor column is a combination of the advantages of the current domestic types of vacuum circuit breaker on the column, absorb the mature experience of Japan Toshiba VSPS type automatic column segment, performance is ahead of the domestic similar products. It is a new generation of vacuum circuit breaker which is in the leading position in this field. It is convenient to install voltage transformer and current transformer inside, and upgrade to intelligent circuit breaker or automatic rec loser when equipped with controller. Circuit breaker can also be equipped with disconnecting switch, its operating mechanism can be spring or permanent magnet operating mechanism.
The product is applicable to 12kV ac 50HZ three-phase power system, for load current, overload current and short-circuit current.
The product is manufactured according to GB1984/IEC56 and DL404 standards.
Main technical parameters
|
No |
Item |
Unit |
Data |
||
|
1 |
Rated voltage |
kV |
12 |
||
|
2 |
Rated insulation level (altitude: 2000m) |
Power frequency voltage of 1 min |
dry |
kV |
42 |
|
wet |
kV |
34 |
|||
|
Lightning shock resistance (peak) |
kV |
75 |
|||
|
3 |
Rated current |
A |
630,1000, 1250 |
||
|
4 |
Rated frequency |
Hz |
50 |
||
|
5 |
Rated short circuit breaking current |
kA |
12.5, 16' 20, 25 |
||
|
6 |
Rated operating sequence |
0-0.3s-C0-180s-CO |
|||
|
7 |
Rated number of short circuit breaking current |
Times |
30 |
||
|
8 |
Rated short circuit shut-off current (peak) |
kA |
31.5, 40, 50, 63 |
||
|
9 |
Rated peak withstand current |
kA |
31.5, 40, 50, 63 |
||
|
10 |
Rated short - term withstand current |
kA |
12.5, 16, 20, 25 |
||
|
11 |
Full break time |
s |
<0.125 |
||
|
12 |
Rated short circuit current duration |
s |
5 |
||
|
13 |
Mechanical life |
Times |
10000 |
||
|
14 |
Rated operating voltage |
V |
AC/DC 220 11 O 24 |
||
|
15 |
Rated current of overcurrent trip |
A |
5 |
||
Outline and mounting dimensions
PDF Datasheet-1.jpg)
-1.jpg)
