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Indoor High Voltage Vacuum Circuit Breaker
ZN63A(VS1)-24
1.General Description
ZN63A(VS1)-24 series of Indoor High Voltage Vacuum Circuit Breaker
with embedded poles is 3 phase A.C.50 Hz indoor power distribution equipment with the rated voltage of 24kV. It's used for protecting and controlling the
electrical equipment in fields of industry&mining enterprise. power plants and substation.
The vacuum circuit breaker with spring mechanism is embedded pole that
can greatly improve the reliability of insulation, mechanical and breaking performance.and own free maintance and long mechanical&electrical life.
The Vacuum Circuit Breaker conforms to national standards and IEC standard. The capability reaches grade of M2-E2-C2.The product is used for many kinds of switchgears such as KYN28-24 and can be fixed installation.
2.Applying conditions:
Ambient temperature;-10℃----+40℃
Relative humidity:daily average ≤95%,monthly average ≤90%
Seismic intensity :≤8
Saturated vapor pressure:daily average ≤2.2kPa,monthly average≤1.8kPa;
Altitude:≤1000m;(Not including special requirement)
Service environment:should be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration
3.Technical specification
No. | Item | Unit | Data | ||||||
1 | Rated voltage | kV | 24 | ||||||
2 | Rated frequency | Hz | 50/60 | ||||||
3 | Rated insulation levels | Rated power frequency withstand voltage/1min | kV | 65 | |||||
Rated lighting impulse withstand voltage | kV | 125 | |||||||
4 | Rated current | A | 630 | 1250 | 1600 | 2000 | 2500 | 3150 | |
5 | Rated short circuit breaking current Rated short time withstand current(4s) | kA | 20 | 20 | |||||
25 | 25 | 25 | |||||||
31.5 | 31.5 | 31.5 | 31.5 | 31.5 | |||||
6 | Rated short circuit making current(peak) Rated withstand current(peak) | kA | 50 | 50 | |||||
63 | 63 | 63 | |||||||
80 | 80 | 80 | 80 | 80 | |||||
7 | Rated duration of short circuit | s | 4 | ||||||
8 | Rated operating sequence | O-0.3s-CO-180s-CO | |||||||
9 | Mechanical life | Times | 30000 | ||||||
10* | Rated single capacitor bank breaking current | A | 400 | ||||||
11* | Rated back to back capacitor bank breaking current | A | 400 | ||||||
12 | Max DC component | 50% |
Remark:
1.No.11 &No.12 is offered while user need.
4.Overall drawing
Overall drawing of fixed circuit breaker
6.Secondary connection diagram
Secondary connection diagram of withdrawable type circuit breaker
Secondary connection diagram of fixed type circuit breaker