CKJ5-160 / 1140 / 220v AC vacuum contactor CKJ5-160 / 1140 AC vacuum contactor for AC 50HZ, rated working voltage up to 1140V, rated operating current 125-400A electricity network, for direct or remote making and breaking with the main circuits. Because the main contacts to work in a high vacuum environment, so there is an arc ranking is not exposed, small size, light weight, long life, long maintenance cycle, etc., especially suitable for the composition of the various lights controller and work in oil, chemicals and other occasions . First, the working conditions 1. A height of not more than 2000 meters above sea level. 2. Ambient air temperature: -25 ~ + 40 ℃. 3. Relative humidity: ambient air temperature does not exceed + 50% 25 ℃ when, at lower temperatures can have a higher relative humidity. The average temperature of the wettest month of + 25 ℃, the monthly average maximum relative humidity of 90%. 4. Mounting surface and the vertical inclination of not more than 15 °. Installation category usually Class Ⅲ. 5. Environmental Pollution levels for three. 6. Vibration is not more than 30 m / sec field. CKJ5-160 vacuum contactors use and maintenance 1. Contactor operating voltage and should not exceed the rated operating current (control circuit diagram shown in Figure IV Figure V,). 2. New exchange of vacuum interrupters in advance to check its vacuum. Requires 10-2 Pa (10-4 Torr) or more. Available method for detecting power frequency withstand voltage: contact spacing requirements within the standard range, requiring more pressure 8KV (after three trials, does not allow continuous breakdown or flashover). Check and adjust the content: ⑴ vacuum switch tube vacuum. Available frequency test method. ⑵ auxiliary contact contact exposure. To contact the adverse exchange new contacts or to repair. ⑶ check opening distance and three synchronized. No ⑷ all nuts and bolts loose. There are no moving parts stuck phenomenon. ⑸ withstand voltage degree examination, with a tester or 2500V megger. CKJ5-160 vacuum contactors main technical parameters Type Rated voltage (frequency) (V) Rated Current (A) the main contact parameters frequency withstand voltage V (rms) of the main circuit control circuit opening distance (mm) overtravel (mm ) final pressure (N) of the main circuit auxiliary circuit control circuit CKJ5-80 / 1140 1140 36,110,220,380 80 1.8 ± 0.2> 1 30 ± 5 4200 2500 2000 CKJ5-125 / 1140 1140 36,110,220,380 125 1.8 ± 0.2> 1 30 ± 5 4200 2500 2000 CKJ5-160 / 1140 1140 36,110,220,380 160 1.8 ± 0.2> 1 30 ± 5 4200 2500 2000 CKJ5-250 / 1140 1140 36,110,220,380 250 2 ± 0.2> 1.5 80 ± 10 4200 2500 2000 CKJ5-400 / 1140 1140 36,110,220,380 400 20 + 0.5> 1.5 120 ± 20 4200 2500 2000 CKJ5-600 / 1140 1140 36,110,220,380 600 20 + 0.5> 1.5 190 ± 20 4200 2500 2000