Beschrijving
General descriptionMV vacuum contactor has the features of energiebesparing, fire protection, explosion-proof, small size, long life, low maintenance cost, reliable operation and non-polluting and so on ,which is widely used in metallurgy, mining, petroleum, chemical, railway, radio, communications, industrial high-frequency heating industry, energy, transportation and other power distribution system. With the technology of breaking the current , high reliability and compact structure, the contactor can be used in particularly harsh conditions. They are suitable for the control and protection (with fuses) lines, substations and distribution stations, motors, transformers, capacitors and so on.
Technical parameters
| Model | CKG3-7.2/160 | CKG3-7.2/250 | CKG3-7.2/400 | CKG3-7.2/630 |
| Nominale spanning(kv) | 7.2 | |||
| Nominale stroom(A) | 160 | 250 | 400 | 630 |
| Main circuit joint capability(A/100 times) | 1600 | 2500 | 4000 | 6300 |
| On-off capability of main circuit(A/10times) | 1280 | 2000 | 3200 | 5000 |
| Limit breaking capacity(A/3 times) | 3200 | 4000 | 4500 | 6300 |
| Mechanical life(Ten thousand times) | 100 | |||
| Mechanical lock life(Ten thousand times) | 10 | |||
| Main circuit power frequency voltage withstand(kV) | 32 | |||
| Auxiliary circuit power frequency voltage withstand(kV) | 2.5 | |||
| Power frequency voltage withstand of control circuit(kV) | 2 | |||
| Rated operating frequency(times/h) | 300 | |||
| Frequency of mechanical lock operation(times/h) | 30 | |||
| Contact opening(mm) | 4±0.5 | |||
| Overrange(mm) | 1.5±0.3 | |||
