The vacuum contactor uses the vacuum interrupter to extinguish the arc to frequently connect and cut off the normal working current. It is usually used to remotely connect and disconnect 6kV, 380V (660V, 1140V) AC motors with frequent starting and stopping of medium and low voltage.
CKJ5 type low-voltage vacuum AC contactor is suitable for AC: 50HZ. Rated voltage: 1140V, rated current 63 to 630A feeding network, for long-distance connection and disconnection of circuits, and frequent starting and stopping of AC motors. It is especially suitable for assembling explosion-proof electromagnetic starter with various protection devices.
The vacuum contactor has strong quenching ability, good pressure resistance, high operating frequency, long life, no arc spraying, small size, light weight and long maintenance period. The manufacturing process of the vacuum interrupter of the vacuum contactor is very high. If the process is not good, the vacuum of the interrupter will easily drop. The material of the contact is not good, and the phenomenon of %26quot;cut-off overvoltage %26quot; will appear when the current is broken, that is, when the current is broken, due to the strong arc-extinguishing ability of the vacuum interrupter, the arc current is not cut off when it naturally crosses zero. , but a sudden drop from a certain value of the current to zero, resulting in a high overvoltage. Shut-off voltage can endanger the safe operation of electrical equipment.
The main models are: CKJ/CKJ5 series low-voltage vacuum AC contactors are widely used in coal mines, electric power, metallurgy, and textiles. High-rise buildings and other industries.
CKJ5 Series vacuum contactor 80A -800A | |||||||
Detail Tech parameter | 80/1140 | 125/1140 | 160/1140 | 250/1140 | 400/1140 | 630/1140 | 800/1140 |
Main circuit rated voltage (V) | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 |
Main circuit rated current (A) | 80 | 125 | 160 | 250 | 400 | 630 | 630 |
Combiner closing capacity (A/100times) | 800 | 1250 | 1600 | 2500 | 4000 | 6000 | 6000 |
Main circuit break-make ability (A/10times) | 640 | 100 | 1280 | 2000 | 3200 | 5000 | 5000 |
Maximum break ability (A/3times) | 1600 | 2500 | 3200 | 4000 | 4500 | 6000 | 6000 |
Electricity life AC3(times) | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 |
Electricity life AC4 (times) | 6 0000 | 6 0000 | 6 0000 | 10 0000 | 10 0000 | 10 0000 | 10 0000 |
Mechanical life (times) | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 |
Rated operate frequency AC3 (times/h) | 600 | 600 | 600 | 300 | 300 | 300 | 300 |
Rated operate frequency AC4 (times/h) | 300 | 300 | 300 | 120 | 120 | 120 | 120 |
Clearance between open contacts (mm) | 1.8±0.2 | 1.8±0.2 | 1.8±0.2 | 2±0.2 | 2±0.2 | 2.5±0.2 | 2.5±0.2 |
Over travel (mm) | 0.6±0.2 | 0.6±0.2 | 0.6±0.2 | 1±0.2 | 1±0.2 | 1±0.2 | 1±0.2 |
Secondary control voltage (v) | AC&DC:36v 110v 127v 220v 380v 440v | ||||||
The vacuum contactor uses the vacuum interrupter to extinguish the arc to frequently connect and cut off the normal working current. It is usually used to remotely connect and disconnect 6kV, 380V (660V, 1140V) AC motors with frequent starting and stopping of medium and low voltage.
CKJ5 type low-voltage vacuum AC contactor is suitable for AC: 50HZ. Rated voltage: 1140V, rated current 63 to 630A feeding network, for long-distance connection and disconnection of circuits, and frequent starting and stopping of AC motors. It is especially suitable for assembling explosion-proof electromagnetic starter with various protection devices.
The vacuum contactor has strong quenching ability, good pressure resistance, high operating frequency, long life, no arc spraying, small size, light weight and long maintenance period. The manufacturing process of the vacuum interrupter of the vacuum contactor is very high. If the process is not good, the vacuum of the interrupter will easily drop. The material of the contact is not good, and the phenomenon of %26quot;cut-off overvoltage %26quot; will appear when the current is broken, that is, when the current is broken, due to the strong arc-extinguishing ability of the vacuum interrupter, the arc current is not cut off when it naturally crosses zero. , but a sudden drop from a certain value of the current to zero, resulting in a high overvoltage. Shut-off voltage can endanger the safe operation of electrical equipment.
The main models are: CKJ/CKJ5 series low-voltage vacuum AC contactors are widely used in coal mines, electric power, metallurgy, and textiles. High-rise buildings and other industries.
CKJ5 Series vacuum contactor 80A -800A | |||||||
Detail Tech parameter | 80/1140 | 125/1140 | 160/1140 | 250/1140 | 400/1140 | 630/1140 | 800/1140 |
Main circuit rated voltage (V) | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 |
Main circuit rated current (A) | 80 | 125 | 160 | 250 | 400 | 630 | 630 |
Combiner closing capacity (A/100times) | 800 | 1250 | 1600 | 2500 | 4000 | 6000 | 6000 |
Main circuit break-make ability (A/10times) | 640 | 100 | 1280 | 2000 | 3200 | 5000 | 5000 |
Maximum break ability (A/3times) | 1600 | 2500 | 3200 | 4000 | 4500 | 6000 | 6000 |
Electricity life AC3(times) | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 |
Electricity life AC4 (times) | 6 0000 | 6 0000 | 6 0000 | 10 0000 | 10 0000 | 10 0000 | 10 0000 |
Mechanical life (times) | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 |
Rated operate frequency AC3 (times/h) | 600 | 600 | 600 | 300 | 300 | 300 | 300 |
Rated operate frequency AC4 (times/h) | 300 | 300 | 300 | 120 | 120 | 120 | 120 |
Clearance between open contacts (mm) | 1.8±0.2 | 1.8±0.2 | 1.8±0.2 | 2±0.2 | 2±0.2 | 2.5±0.2 | 2.5±0.2 |
Over travel (mm) | 0.6±0.2 | 0.6±0.2 | 0.6±0.2 | 1±0.2 | 1±0.2 | 1±0.2 | 1±0.2 |
Secondary control voltage (v) | AC&DC:36v 110v 127v 220v 380v 440v | ||||||
