Eberry Electric Co., Ltd.
We are a professional manufacturer of vacuum circuit breakers. We have 15 years of experience in design and development. We have a professional team responsible for comprehensive solution.
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ZN63(VS1)-24KV-275 Handcart indoor high voltage vacuum circuit breaker Indoor VCB
ZN63 (VS1)-24 series indoor vacuum circuit breaker
Overview:
ZN63 (VS1)-24 series indoor vacuum circuit breaker is an indoor high voltage equipment with rated voltage of 24kV and three-phase AC 50Hz. It is suitable for control or protection of power transmission and distribution systems such as power plants, substations and industrial and mining enterprises. The switch is especially suitable for high-altitude areas where important loads and frequent operations are interrupted.
The manufacture of circuit breakers complies with China's national standard GB/T1984-2003 "AC high voltage circuit breaker", DL/T403-2000 "3.6~40.5kV indoor vacuum circuit breaker ordering technical conditions" and related IEC standards, and has a reliable chain function. .
The operating mechanism of the circuit breaker is a spring energy storage type, which can be used for AC and DC energy storage operations, and can also be used for manual operation.
The circuit breaker can also be equipped with a long-life permanent magnet operating mechanism with a mechanical life of 20,000 times, which can be used in extremely frequent operation.
The circuit breaker is designed in the form of a front-rear assembly, which can be used both as a fixed installation unit and as a center-mounted unit in the chassis.
Enverenmental Conditions:
1. Ambient temperature: upper limit +40 ° C, lower limit -15 ° C;
2. Altitude: ≤3000m (if the altitude is increased, the rated insulation level will increase accordingly);
3. Amplitude: the seismic intensity does not exceed 8 degrees;
4. The daily average value of relative humidity of air is not more than 95%, and the monthly average is not less than 90%;
5. Locations without fire, explosion hazard, serious pollution, chemical corrosion and strenuous exercise.
The main technical parameters:
| NO | Item | Units | Technicial parameters | ||
| 1 | Rated voltage | KV | 24 | ||
| 2 | Rated short-duration power frequency withstand voltage | 65/79 (phase, ground/fracture) | |||
| 3 | Rated lightning impulse withstand voltage | 125/145 (phase, ground/fracture) | |||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Rated current | A | 630 1250 | 630 1250 1600 2000 2500 3150 | 630 1250 1600 2000 2500 3150 |
| 6 | Rated short-circuit breaking current | KA | 20/25 | 31.5 | 40 |
| 7 | Rated short-time withstand voltage | 20/25 | 31.5 | 40 | |
| 8 | Rated short circuit duration | S | 4 | ||
| 9 | Rated peak withstand current | KA | 50/63 | 80 | 100 |
| 10 | Rated short circuit closing current | 50/63 | 80 | 100 | |
| 11 | Secondary circuit power frequency withstand voltage (1min) | 2000 | |||
| 12 | Rated single / back to back capacitor group breaking current | A | 630/400(40kA:800/400) | ||
| 13 | Rated capacitor bank | 12.5 (frequency is not more than 1000Hz) | |||
| 14 | Mechanical life | KA | 20000 | ||
| 15 | Rated current breaking times (electrical life) | 20000 | |||
| 16 | Rated short circuit current breaking times | 次/times | 50(40kA≤30) | ||
| 17 | Dynamic and static contacts allow wear cumulative thickness | mm | 3 | ||
| 18 | Energy storage time | s | ≤10 | ||
| 19 | Contact opening distance | mm | 16±1 | ||
| 20 | Overtravel | 3.5±0.5 | |||
| 21 | Contact closing bounce time | ms | ≤2(40kA≤3) | ||
| 22 | Three-phase split/closed period | ≤2 | |||
| 23 | Average opening speed (contacts are separated by -8mm) | m/s | 1.5±0.2 | ||
| 24 | Average closing speed (8mm - contact closure) | 0.8±0.2 | |||
| 25 | Main conductive loop resistance | μΩ | ≤50(630A)≤45(1250A) ≤40(1600,2000A)≤35(2500A以上) | ||
| 26 | Rated operation sequence | 0-0.3s-Co-180s-Co | |||
