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    EVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactorEVC9-3.6/D400-4T vacuum contactor
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EVC9-3.6/D400-4T vacuum contactor

Name Unit Value
Main circuit Rated working voltage (Ue) kV 3.6
Rated working current (Ie) A 400
Rated frequency (fr) Hz 50~60
Rated making capacity A 10Ie (AC-4)
Rated breaking capacity A 8Ie (AC-4)
Rated short time withstand current A 10Ie
Rated peak withstand current A 25Ie
Rated short circuit duration s 4
Power frequency withstand voltage Between phases, phase to earth kV 18
Vacuum breaks kV 18
Lightening impulse withstand voltage kV 40
Control circuit Rated voltage (Us) V AC or DC. 110/220
Rated power (Ps)electric holding VA ≤600/50 (absorbing/holding)
Auxiliary circuit Form 3a+3b
Rated value AC 380V/5A,
DC 380V/1A
Control circuit, auxiliary circuit to earth power frequency withstand voltage kV 2
Rated operating frequency Long-term time/h 300
Short-term time/h 600
Mechanical endurance 10000 times 30
Electrical endurance 10000 times 10
Mechanical characteristics Closing time ms ≤200
Original opening time ms ≤160
3-phase synchronism ms ≤3
Closing tripping ms ≤10
Remark: rated control voltage can be made according to customer’s requirements.


FAQ
Q:What is the benefit of using a vacuum contactor?
A:In conclusion, medium-voltage vacuum contactors are specialized electrical switches designed for medium-voltage power systems. They utilize vacuum interrupters to extinguish arcs when contacts are opened or closed. These contractors offer advantages such as enhanced safety, longevity, and low maintenance.
Q:What is the principle of vacuum contactor?
A:The vacuum contactor is mainly composed of a vacuum interrupter and an operating mechanism. The vacuum interrupter has two functions of reliable arc extinguishing when passing the normal operating current and frequently switching the operating current. But it cannot cut off the overload and short-circuit current.
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