CKG3 Vacuum Contactor 7.2kV Vacuum Contactor

Vacuum Contactor

CKG3vacuum contactor is mainly used in the power systems with AC 50Hz and rated voltage 7.2kV,

for making or breaking circuit and to make electromagnetic starter with suitable protective device and F-C case.

Altitude above sea should not be over 1,000m;

Ambient temperature is -5~40°C;

Average temperature in 24 hour limited below 35°C;

When the highest temperature is 40°C, the relative humidity should not be higher than 50%;

Pollution degree: class 3

CKG3-630/7.2

C:Contactor

K:Vacuum

G:High Voltage

630:rated current

7.2:rated voltage

Model	CKG3-7.2/160~630-4
main circuit rated voltage (KV)	7.2
main circuit rated current (A)	160	250	400	630
main circuit making ability (A/100times)	1600	2500	4000	6300
main circuit break-make ability (A/10times)	1280	2000	3200	5000
max. break ability (A/3times)	3200	3200	4000	6300
mechanical life (times)	1,000,000
power-frequency withstand voltage for main circuit (KV)	32
power-frequency withstand voltage for auxiliary circuit (KV)	2.5
power-frequency withstand voltage for control circuit (KV)	2
rated operating frequency (times/h)	300
opening time (ms)	≤120
closing time (ms)	≤150
clearance between open contacts (mm)	4±0.5
over travel (mm)	≥1.2