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Ckg3

Vacuum contactors utilize vacuum bottle encapsulated contacts to suppress the arc.This arc suppression allows the contac
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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 ContactorUnitValue
Main circuitRated working voltage (Ue)kV7.212
Rated working current (Ie)A160, 250,400,630
Rated frequency (fr)Hz50~60
Rated making capacityA10Ie (AC-4)
Rated breaking capacityA8Ie (AC-4)
Rated short time withstand currentA10Ie
Rated peak withstand currentA25Ie
Rated short circuit durations4
Power frequency withstand voltageBetween phases,phase to earthkV3242
Vacuum breakskV3242
Lightening impulse withstand voltagekV6075
Control circuitRated voltage1 (Us)VAC or DC. 110/220
Rated power (Ps)Electric holdingVA≤1000/100 (absorbing/holding)
Mechanical holdingVA≤900/600 (closing/opening)
Auxiliary circuitForm 3a+3b
Rated value AC380V/5A, DC380V/1A
Control circuit, auxiliary circuit to earth power frequency withstand voltagekV2
Rated operating frequencyLong-term or mechanical holding typetime/h300
Short-termtime/h600
Mechanical endurance2 10000 times100
Electrical endurance 10000 times25(AC-3),10(AC-4)
Mechanical characteristicsClosing timems≤200
Original opening timems≤160(electric holding); ≤60(mechanical holding)
3-phase synchronismms≤3
Closing trippingms≤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.

Ckg3-7.2kv/630A High Voltage AC Vacuum Contactor

Ckg3-7.2kv/630A High Voltage AC Vacuum Contactor

Ckg3-7.2kv/630A High Voltage AC Vacuum Contactor

Ckg3-7.2kv/630A High Voltage AC Vacuum Contactor

Ckg3-7.2kv/630A High Voltage AC Vacuum Contactor

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