Ckg3
Description
Basic Info.
Model NO. | CKG3-7.2/630A |
Transport Package | Paper Box Packaging |
Specification | standard sizes |
Trademark | OEM |
Origin | Wenzhou |
HS Code | 8535210000 |
Production Capacity | 1000PCS/Week |
Product Description
Descriptions: CKG3-7.2KV/630A High Voltage AC Vacuum Contactor | Unit | Value | |||
Main circuit | Rated working voltage (Ue) | kV | 7.2 | 12 | |
Rated working current (Ie) | A | 160, 250,400,630 | |||
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 | 32 | 42 | |
Vacuum breaks | kV | 32 | 42 | ||
Lightening impulse withstand voltage | kV | 60 | 75 | ||
Control circuit | Rated voltage1 (Us) | V | AC or DC. 110/220 | ||
Rated power (Ps) | Electric holding | VA | ≤1000/100 (absorbing/holding) | ||
Mechanical holding | VA | ≤900/600 (closing/opening) | |||
Auxiliary circuit | Form | 3a+3b | |||
Rated value | AC380V/5A, DC380V/1A | ||||
Control circuit, auxiliary circuit to earth power frequency withstand voltage | kV | 2 | |||
Rated operating frequency | Long-term or mechanical holding type | time/h | 300 | ||
Short-term | time/h | 600 | |||
Mechanical endurance2 | 10000 times | 100 | |||
Electrical endurance | 10000 times | 25(AC-3),10(AC-4) | |||
Mechanical characteristics | Closing time | ms | ≤200 | ||
Original opening time | ms | ≤160(electric holding); ≤60(mechanical holding) | |||
3-phase synchronism | ms | ≤3 | |||
Closing tripping | ms | ≤10 | |||
Remark: 1.rated control voltage can be made according to customer's requirements. | |||||
2.for mechanical holding type, the interlock mechanism should be changed every 300,000 times. |
Vacuum contactors utilize vacuum bottle encapsulated contacts to suppress the arc.This arc suppression allows the contacts to be much smaller and use less space than air break contacts at higher currents.As the contacts are encapsulated, vacuum contactors are used fairly extensively in dirty applications, such as mining.
Vacuum contactors are only applicable for use in AC systems.The AC arc generated upon opening of the contacts will self-extinguish at the zero-crossing of the current waveform, with the vacuum preventinga re-strike of the arc across the open contacts. Vacuum contactors are therefore very efficient at disrupting the energy of an electric arc and are usedwhen relatively fast switching is required, as the maximum break time is determined by the periodicity of the AC waveform.
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