Sidemonteret indendørs højspænding vakuumafbryder
Den sidemonterede indendørs højspændingsvakuumafbryder produceret af den kinesiske fabriks Kexun bruges hovedsageligt til beskyttelses- og kontrolkredsløb. Det er velegnet til steder med nominel spænding på 12 kV og hyppighed på 50Hz, hvor hyppig drift eller kredsløbsstrømsafbrydelse er påkrævet. Det kan installeres i fast switchgear eller bruges alene.
Model: VS1
Brand ： Kexr
Model: VS1
Brand ： Kexr
●structural characteristics of The Side-mounted indoor high voltage vacuum circuit breaker
▶Lateral Operation Mechanism
▶Epoxy Resin Insulated Pole
▶Trip-Free Spring Operating System
▶Front/Rear Cable Terminations
● Side-mounted indoor high voltage vacuum circuit breaker using conditions
▶Ambient temperature range: The temperature surround Side-mounted indoor high voltage vacuum circuit breaker should be -15~40℃
▶Altitude: The Side-mounted indoor high voltage vacuum circuit breaker should be installed less than 1000 meters.
▶Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%, the daily average of saturated vapor pressure is not more than 2.2×10-3MPa, and the monthly average is not more than 1.8×10-3MPa.
▶Earthquake intensity: less than 8 degree
▶Places without fire, explosion, serious pollution, chemical corrosion and severe vibration.
● Technical parameters of The Side-mounted indoor high voltage vacuum circuit breaker
|
Item |
Unit |
Data |
||||
|
Rated voltage |
KV |
12 |
||||
|
Rated current |
A |
630~1250 |
1250 |
1250 |
||
|
Rated short circuit break current |
KA |
20 |
25 |
31.5 |
||
|
Rated short circuit closing current |
KA |
50 |
63 |
80 |
||
|
Rated peak withstand current |
KA |
50 |
63 |
80 |
||
|
4S short circuit withstand current （peak） |
KA |
20 |
25 |
31.5 |
||
|
Rated insulate level |
Working withstand voltage |
KV |
42（48） |
|||
|
Impact withstand voltage |
75（85） |
|||||
|
Rated operating sequence |
|
Break-0.3s-close-180s-close |
||||
|
Mechanical life |
Time |
10000 |
||||
|
Rated short-circuit current interruption |
Time |
50 |
||||
|
Rated opening voltage of operating mechanism（DC） |
V |
110,220 |
||||
|
Contact terminal distance |
mm |
11±1 |
||||
|
Overtravel (contact spring compression length) |
mm |
35±0.5 |
||||
|
Three-phase separation and closing bounce time |
ms |
≤2 |
||||
|
Contact closing bounce time |
ms |
≤2 |
||||
|
Average opening speed |
m/s |
1.1±0.2 |
||||
|
Average closing speed |
m/s |
0.6±0.2 |
||||
|
Opening time |
Max operating voltage |
s |
≤0.05 |
|||
|
Min operating voltage |
≤0.08 |
|||||
|
Closing time |
s |
0.1 |
||||
|
Allowable wear accumulation thickness of dynamic and static contacts |
mm |
3 |
||||
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