80A 125A 160A Vacuum Contactor
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80A 125A 160A Vacuum Contactor
Name | Unit | Value | ||||
Main circuit | Rated working voltage (Ue) | V | 1140 | |||
Rated working current (Ie) | A | 80,125,160 | ||||
Rated frequency (fr) | Hz | 50~60 | ||||
Rated making capacity | A | 12Ie (AC-4) | ||||
Rated breaking capacity | A | 10Ie (AC-4) | ||||
Withstand overload current capacity/s | A/s | 8Ie/10 | ||||
Power frequency withstand voltage | Between phases, phase to earth | kV | 4.2 | |||
Vacuum breaks | kV | 10 | ||||
Lightening impulse withstand voltage | kV | 8 | ||||
Control circuit | Rated voltage (Us) | V | 220 | |||
Rated power (Ps)electric holding | VA | ≤600/50 (absorbing/holding) | ||||
Auxiliary circuit | Form | 2a 1b | ||||
Rated value | AC 380V/5A | |||||
Control circuit, auxiliary circuit to earth power frequency withstand voltage | kV | 2 | ||||
Rated operating frequency | Long-term | time/h | 600(AC-3), 300(AC-4) | |||
Short-term | time/h | 3600 | ||||
Mechanical endurance | 10000 times | 30 | ||||
Electrical endurance | 10000 times | 6 | ||||
Mechanical characteristics | Closing time | ms | ≤200 | |||
Original opening time | ms | ≤160 | ||||
3-phase synchronism | ms | ≤3 | ||||
Closing tripping | ms | ≤10 | ||||
Note: Rated control voltage can be made according to customer’s requirements. |
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.
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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