High voltage vacuum circuit breakers
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ZN63(VS1)-12 High Voltage Vacuum Circuit Breaker
Application
ZN63(VS1)-12 indoor high voltage vacuum circuit breaker is used in the three-phase AC power system of frequency 50Hz, rated voltage 12kV. It is applied in the grid equipment, the power distribution system of industrial and mining enterprises as well as the places where requires repeated opening short-circuit current and frequent operation.
This circuit breaker adopts unibody design of operating mechanism and circuit breaker technology, which can not only be used as fixed installation unit, but also can constitute the handcart unit with dedicated advanced mechanism.
ZN63(VS1)-12 is indoor medium-voltage solid type seal vacuum circuit breaker, ZN63(VS1)-12 vacuum breaker suitable for the insulation in the indoor air switch for 50Hz, rated voltage 12kV and below the grid from the control and protection, ZN63(VS1)-12 vacuum circuit breaker and the frequent need for short-circuit breaking current of occasions with very good performance, fully meet the requirements of automatic re-closing and have higher reliability and service life.
Technical Parameter
|
No |
Item |
Unit |
Value |
||||
|
1 |
Rated voltage |
kV |
12 |
||||
|
2 |
High test operating voltage |
kV |
12 |
||||
|
3 |
Rated current |
A |
630 |
630 |
1250 |
||
|
4 |
Rated short-circuit breaking current |
kA |
20 |
25 |
31.5 |
||
|
5 |
Rated short-circuit closing current |
kA |
50 |
63 |
80 |
||
|
6 |
Rated peak withstand current |
kA |
50 |
63 |
80 |
||
|
7 |
4Srated short time withstand current |
kA |
20 |
25 |
31.5 |
||
|
8 |
Rated Insulation Level |
P.F. withstand voltage(Before and after the rated breaking) |
kV |
42(fracture48) |
|||
|
Impulse withstand voltage(Before and after the rated breaking) |
kV |
75(fracture84) |
|||||
|
9 |
Rated operating order |
|
O-0.3S-CO-180S-CO |
||||
|
10 |
Mechanical life |
times |
3000 |
||||
|
11 |
Rated short-circuit breaking current breaking times |
times |
50 |
||||
|
12 |
Actuator Rated closing voltage(DC) |
V |
110,220 |
||||
|
13 |
Actuator Rated opening voltage(DC) |
V |
110,220 |
||||
|
14 |
Clearance between open contacts |
mm |
11±1 |
||||
|
15 |
Supper Travel(Compressed length of contact springs) |
mm |
3.5±0.5 |
||||
|
16 |
Non corresponding time period between tri-phase opening and closing |
ms |
≤2 |
||||
|
17 |
Bounce time of closing contacts |
ms |
≤2 |
||||
|
18 |
Average time of opening |
s |
0.9~0.12 |
||||
|
19 |
Average time of closing |
s |
0.4~0.8 |
||||
|
20 |
Opening time |
ms |
50 |
||||
|
21 |
Closing time |
ms |
100 |
||||
|
22 |
Main loop resistance of each phase |
μΩ |
60 |
50 |
|||
|
23 |
Allowed acumination thickness between moving contact and static contact |
mm |
3 |
||||
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