Main Purpose
VS1-12 Series indoor high-voltage vacuum circuit breaker is an indoor switchgear mainly used in three-phase12KV AC50Hz power system, it's used as protective and control unit for power equipment of power network and industrial and mining enterprise. It’s especially suitable for places requiring frequent operation under rated operating current or multi-time short-circuit breaking.
The circuit breaker integrates operating mechanism and breaker into one whole, which can not only be as fixed unit, but also can be equipped with special driving mechanism to form a trolley.
Model Implication
Normal Work Environment
a. Ambient temperature: +40℃ ~-15℃ ;
b. Altitude: less than ≤ 1000m (rated insulating level shall be enhanced for higher altitude)
c. Earthquake intensity less than 8 degree.
d. Daily average relative humidity: ≤ 95%, monthly average relative humidity: ≤ 90%
e. In places of no danger of flammability and explosion, no severe pollution, no corrosive chemical and no intense shake.
Main Technical Parameters
No. | Item | Unit | Parameter | ||||
1 | Rated voltage | KV | 12 | ||||
2 | Rated frequency | Hz | 50 | ||||
3 | Rated insulation level | 1min power frequency withstand voltage | kA | Phase-to-earth/phase-to-phase 42/48 | |||
Lightning impulse withstand voltage (peak) | Phase-to-earth/phase-to-phase 75/85 | ||||||
4 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 | |
5 | Rated current | A | 630 | 630 | 1250-1600 | 1250-1600 | |
6 | Rated short-time withstand current (effective) | kA | 20 | 25 | 31.5 | 40 | |
7 | Rated peak withstand current | 50 | 63 | 80 | 100 | ||
8 | Rated short circuit making current (peak) | 50 | 63 | 80 | 100 | ||
9 | Rated duration of short circuit | S | 4 | ||||
10 | Mechanical life | time | 20000 | ||||
11 | Secondary circuit power frequency withstand voltage (1min) | V | 2000 | ||||
12 | Rated operating sequence | O-t-CO-t1-CO | |||||
Note:20kA、25kA、31.5kA t=0.3s t1=180s; 40kA t=180s t1=180s | |||||||
OutlineandInstallationSize
