China VS1 (ZN63A) -12/24 Model indoor AC high voltage vacuum circuit breaker applies to power system of rated voltage 12kV and 24kV, three-phase and AC 50/60Hz.
China VS1 (ZN63A) -12/24 Model indoor AC high voltage vacuum circuit breaker is a type of holistic and completely sealed HV switchgear, it has compactable dimension and small volume. The VCB applies to power system of rated voltage 12kV and 24kV, three-phase and AC 50/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus.
Product features
- Conform toconforms to IEC62271, GB1984, JB3855 and DL1403 standard
- Ideal contact material and shape, ensuring low current carrying value and stable contact resistance
- Integrated design of main conductive circuit made of compound isolation material and operating mechanism
- Few components and parts, compact and logical structure, assuring more reliable and safer operation
- Compact design enables the breaker to be installed within almost all switchgears
- Epoxy resin insulation cylinder can withstand severe environmental impacts, enabling VS1 breakers to be used in all kinds of situations.
- Superior cost performance, ideal choice for engineering programs
Product application conditions
- Ambient air temperature: -15℃ to +40℃,the average temperature is not exceeding 45℃
- Average relative humidity: ≤95%;The average daily water vapor pressure shall not exceed 2.2kPa, and the average monthly relative humidity shall not exceed 90%
- Average daily vapor pressure shall not exceed 2.3kPa, average monthly mean vapor pressure shall not exceed 1.8kPa.
- The altitude:≤1500m
- The surrounding air is not visibly contaminated by dust, smoke, corrosive and flammable gases, vapors or salt mists
- The amplitude of induced electromagnetic interference in the secondary system shall not exceed 1.6kV
- No water dropping, flammable and explosive hazards in the application places, without chemical corrosive gases and violent vibrations.
Note: Customization support for special requirements.
No. | Item | Unit | Parameter |
1 | Rated voltage | kV | 12/24 |
2 | Rated power frequency withstand voltage (1min) | kV | 42/48 |
3 | Rated lighting impulse withstand voltage (peak) | kV | 75/85 |
4 | Rated frequency | Hz | 50 |
5 | Rated current | A | 63/1250/1600/2000/2500/3150/4000* |
6 | Rated short circuit breaking current | KA | 20 25 31.5 40 50 |
7 | Rated short time withstand current | kA | 20 25 31.5 40 50 |
8 | Rated short circuit making current (peak) | kA | 50 63 80 100 125 |
9 | Rated peak withstand current | kA | 50 63 80 100 125 |
10 | Rated short circuit duration | s | 4 |
11 | Secondary circuit power frequency withstand voltage (1min) | kV | 2 |
12 | Rated single/back-to-back capacitor bank breaking current | A | 630/400(800/400-40kA**) |
13 | Times of breaking 99% fault-current | Times | 50 (30 times at 40kA, 20 times at 50kA) |
14 | Closing time | ms | 35-70 |
15 | Opening time | ms | 20-50 |
16 | Mechanical endurance | Times | 20000 10000 (50kA) |
17 | Rated opening/closing operation voltage | V | AC 110/220 DC 110/220 |
18 | Rated voltage of charging motor | V | AC 110/220 DC 110/220 |
19 | Closing bouncing time | ms | ≤ 2 |
20 | Opening asynchronism | ms | ≤ 2 |
21 | Closing asynchronism | ms | ≤ 2 |
22 | Rated operating sequence | | O-0.3s-CO-180s-CO O-180s-CO-180s-CO (50kA) |