Vacuum contactor uses vacuum interrupter to extinguish arc to frequently connect and cut off normal working current. It is usually used for 6-40.5kV system AC motor in long distance connection and disconnection.
++++Application
FVC series of Medium voltage vacuum AC contactors are widely used in coal, power, metallurgy and textile. High building and other industry departments. Medium voltage vacuum AC contactor is suitable for communication: 50-60HZ. rated voltage: 7.2kV/12kV/13.8Kv/15kV/24Kv rated current 63 to 630A feed network for long distance connection and Open circuit, and frequent starting and stopping the use of AC motor. It is especially suitable for assembling with all kinds of protective devices to form flameproof electromagnetic starter.
++++Technical specification
|
Specification  |
unit |
12/400 12/630 |
|||||||||
| Rated Voltage(Ur) | kV | 7.2kV 12kV | |||||||||
| Rated Current(Ie) | A | 160 | 250 | 400 | 630 | ||||||
| Rated Making capacity(Im) | kA | 1.6 | 2.5 | 4 | 6.3 | ||||||
| Rated breaking capacity(Ic) | kA | 1.28 | 2 | 3.2 | 5.04 | ||||||
| Rated withstand overload current and time | kA/s | 2.4/1 | 3.75/1 | 6/1 | 9.45/1 | ||||||
| Rated short-time withstand current(Ik) | kA | 1.6 | 2.5 | 4 | 6.3 | ||||||
| Rated peak withstand current(Ip) | kA | 4 | 6.25 | 10 | 16 | ||||||
| Rated short circuit duration(tk) | s | 4 | |||||||||
|
insulation level |
power frequency withstand voltage | Fracture | kV | Â Â Â Â Â Â Â Â Â Â Â Â Â 42 | |||||||
| Interphase | kV | Â Â Â Â Â Â Â Â Â Â Â Â Â 42 | |||||||||
| Ground | kV | Â Â Â Â Â Â Â Â Â Â Â Â Â 42 | |||||||||
|
lightning impulse withstand voltage (peak) |
Fracture | kV | Â Â Â Â Â Â Â Â Â Â Â Â Â 75 | ||||||||
| Interphase | kV | Â Â Â Â Â Â Â Â Â Â Â Â Â 75 | |||||||||
| Ground | kV | 75 | |||||||||
| Main circuit contact resistance | μΩ | ≤200 | ≤200 | ≤200 | ≤150 | ||||||
| Rated operating frequency | Times/h | 600 | |||||||||
| Mechanical locking operation frequency | Times/h | 60 | |||||||||
|
Mechanical durability (mechanical life) |
Million times |
100 (For mechanical locking models, the lock device needs to be replaced every 300,000 times) |
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|
Electrical durability (electric life) |
AC3 |
Million times |
25 (closing current 6Ie breaking current 1Ie) |
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|
AC4 |
Million times |
6 (closing current 6Ie breaking current 6Ie) |
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