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CKG4 12kV High-voltage Vacuum Contactor
CKG4 series high-voltage vacuum contactor consist of separable insulator bracket and metal frame. It has advantage of firm struc
CKG4 12kV High-voltage Vacuum Contactor
CKG4 series high-voltage vacuum contactor consist of separable insulator bracket and metal frame. It has advantage of firm structure, high reliability, contact from the large open, better breaking capacity and smaller bounce at contact closing and opening. It is suitable for the distribution system of metallurgy, mine, petro-chemistry and building, to control the equipments used eletricity such as high-voltage motor of 12kV or under 12kV, transformer and capacitive loading etc. Especially suitable for frequent operation domain. Because of its small volume, light weight and packaged design of upper and lower arrangement, prevalent in the world. It is convenient to use and maintain, and is easy to form the complete equipment of F-C loop.
Main circuit rated voltage (kV) | 12kV |
Main circuit rated current (A) | 800A, 630A, 400A, 200A |
Main circuit making capacity (A/100times) | 6300A, 6300A, 4000A, 2000A |
Main circuit breaking capacity (A/25times) | 5040A, 5040A, 3200A, 1600A |
Limit breaking capacity(A/3times) | 6300A, 6300A, 4000A, 2000A |
Mechanical life (time) | 100 x 104 |
Electric life AC3 (time) | 25 x 104 |
Electric life AC4 (time) | 10 x 104 |
Rated operating frequency (time/h) | 300 time |
Main circuit power frequency withstand voltage (gap) (kV) | 42 kV |
Phase to Phase, Phase to earth power frequency withstand voltage (kV) | 42 kV |
Lightning impulse withstand voltage (kV) | 75 kV |
Main circuit contact resistance (μΩ) | ≤200 |
Clearance between open contacts (mm) | 6±1 mm |
Overtravel (mm) | 1.5±0.5 mm |
Secondary control voltage (V) | AC:110 /220V DC:110/220V |
Secondary control current (A) | DC14A/7A (800,630A) DC6A/3.5A (400A,200A) |
