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 100% 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)
|