| Brand | HK Electrical |
| Model NO. | CKG4(B) High Voltage Vacuum Contactor |
| Rated voltage | 7.2kV |
| Rated normal current | 250A |
| Rated frequency | 50/60Hz |
| Series | CKG4 |
This series of high-voltage vacuum contactors, the AC vacuum contactors are suitable for power network system with AC 50-60HZ, 6kv(7.2kv), 10kv (12kv) main circuit rated voltage , and rated current from 160A to 1600A. This series of contactor is being applied in long-distance connection and breaking, as well as the frequent starting and controlling AC motors, transformers and capacitor banks and other occasions.
Feature
Good triphase synchronization, and stable mechanical characteristics.
Small closing bounce.
The resistance of the main circuit is ≤ 200 (μΩ) and the reliability is high.
Higher cost performace.
Parameter
| Tech. parameters | Model | 160、250/12(7.2) | 400/12(7.2) | 630/12(7.2) | 800/12(7.2) | 1250/12(7.2) |
| Rated voltage of Main Loop | (KV) | 12(7.2) | 12(7.2) | 12(7.2) | 12(7.2) | 12(7.2) |
| Rated current of Main Loop | (A) | 160、250 | 400 | 630 | 800 | 1000、1250 |
| Main loop making capacity | (A/100times) | 2500 | 4000 | 6300 | 8000 | 10000 |
| Main loop switching capability | (A/25times) | 2000 | 3200 | 5000 | 6000 | 8000 |
| Ultimate breaking capacity | (A/3times) | 4000 | 4500 | 6300 | 8000 | 10000 |
| Mechanical life | (10,000 times) | 100 | 100 | 100 | 100 | 100 |
| Machanical lock life | (10,000 times) | 10 | 10 | 10 | 10 | 10 |
| Electrical endurance AC3 | (10,000 times) | 25 | 25 | 25 | 25 | 25 |
| Permanent magnet mechanism lifespan | (10,000 times) | 20 | 20 | 20 | 20 | 20 |
| Power frequency withstand voltage of main loop (fracture) | (KV) | 42(32) | 42(32) | 42(32) | 42(32) | 42(32) |
| Phase-phase/phase-to-ground power frequency withstand voltage | (KV) | 42(32) | 42(32) | 42(32) | 42(32) | 42(32) |
| Lightning impulse withstand voltage | (KV) | 75(60) | 75(60) | 75(60) | 75(60) | 75(60) |
| Rated operating frequency | (Times/h) | 150 | 150 | 150 | 150 | 150 |
| Operating Frequency of Permanent magnet mechanism | (Times/h) | 30 | 30 | 30 | 30 | 30 |
| Terminal pressure | (N) | >100 | >100 | >100 | >100 | >100 |
| Clearance between open contacts | (mm) | 6(5)±0.5 | 6(5)±0.5 | 6(5)±0.5 | 6(5)±0.5 | 6(5)±0.5 |
| Overtravel | (mm) | 1.5±0.5 | 1.5±0.5 | 1.5±0.5 | 1.5±0.5 | 1.5±0.5 |
| Main loop resistance | (μΩ) | ≤200 | ≤200 | ≤200 | ≤150 | ≤150 |
Install
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