CKJ3 7.2kV High Voltage Vacuum Contactor

Vacuum Contactor

Description

CKJ3 7.2kV High Voltage Vacuum Contactor

General Introduction

CKG3vacuum contactor is mainly used in the power system 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 switchgear.

Working Conditions

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

Model&Meaning

CKJ3-630/7.2

C:Contactor

K:Vacuum

J:High Voltage

630:rated current

7.2:rated voltage

Technical Specification

Model	Rated voltage(v)		Rated current (Main circuit)(A)	Parameter of main contacts			Power frequency Withstand voltage V(effective value)
	Main circuit	Control circuit		Clearance (mm)	Overtravel (mm)	pressure (N)
	Main circuit	Control circuit		Clearance (mm)	Overtravel (mm)	pressure (N)	Main circuit	Auxiliary circuit	Control circuit
CKJ3-7.2/160	7200	220/110	160	3.5±0.3	2±0.2	>85N	32000	2500	2000
CKJ3-7.2/250	7200	220/110	250	3.5±0.3	2±0.2	>85N	32000	2500	2000
CKJ3-7.2/400	7200	220/110	400	3.5±0.3	2±0.2	>85N	32000	2500	2000
CKJ3-7.2/630	7200	220/110	630	3.5±0.3	2±0.2	>85N	32000	2500	2000

Model	Making capacity	Breaking capacity	Limit opening current(A)	Overload	Mechanism life	Weight(kg)
CKJ3-7.2/160	10Ie,100times	8Ie,25times	10Ie	8Ie,10s	1million times	25.5
CKJ3-7.2/250	10Ie,100times	8Ie,25times	10Ie	8Ie,10s	1million times	25.5
CKJ3-7.2/400	10Ie,100times	8Ie,25times	10Ie	8Ie,10s	1million times	25.5
CKJ3-7.2/630	10Ie,100times	8Ie,25times	10Ie	8Ie,10s	1million times	25.5