| Brand | HK Electrical |
| Model NO. | JCZ8C-6kV/12kV Series Medium Voltage Vacuum Contactor |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated frequency | 50/60Hz |
| Series | JCZ8C |
This series of medium-voltage vacuum contactors uses specialized vacuum intterupters for switching capacitor banks. They undergo a high-current aging process and are securely assembled with insulation supports and metal frames into a solid unit, which is safe and reliable.
This series of high-voltage vacuum contactors have large stroke, strong breaking ability, small bounce of closing and opening brake, stable coil working performance, and good triphase synchronization, especially suitable for switching the load of switching capacitor banks.
There are electromagnetic holding type and permanent magnet mechanism type, and they can be used as a switching switch in the compensation device of capacitor banks with large capacitance less than 3000kvar.
The metal frame is firmly integrated into one unit, which is safe and reliable.
The mechanism has a large stroke, strong breaking ability, and small bounce of closing and opening.
The coil has stable working performance, and good triphase synchronization.
| Tech. parameters | Unit | 160、250/12(7.2) | 400/12(7.2) | 630/12(7.2) | 800/12(7.2) | 1250/12(7.2) |
| Rated voltage of the main circuit | (kV) | 12(7.2) | 12(7.2) | 12(7.2) | 12(7.2) | 12(7.2) |
| Rated current of the main circuit | (A) | 160 | 400 | 630 | 800 | 1000、1250 |
| Main circuit making capacity | (A/100times) | 2500 | 4000 | 6300 | 8000 | 10000 |
| Main circuit 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 |
| Mechanical 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 circuit (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 level | (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 |
| Contact opening distance | (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 |
Note: The parameters and dimensions in parentheses are for 7.2kV.
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