Our factory
We are professional manufacturer of current transformer ,voltage transformer, Vacuum Circuit Breakers/Recloser,Isolation switches,Dropout Fuse Cut-out,Lightning Arresters,High and Low Voltage Cabinets,Metering Devices,Power Distribution Transformers etc.
GENERAL
In recent years, with the continuous expansion of the urban power grid and the rapid growth of power load in China, and in view of the characteristics of long power supply lines and large line loss of rural power grid, the original 10kV voltage distribution has been difficult to meet the power supply requirements, and gradually exposed its weaknesses such as excessive power supply distance, high line loss rate, and difficult to meet the requirements of voltage quality. The use of a 20kV voltage level power supply has a series of advantages, such as increasing power supply capacity, ensuring voltage quality, reducing power loss of the grid, and saving the construction cost of the grid.
Therefore, it is an inevitable trend and imperative to adopt a 20kV voltage starting level for the power supply. ZW32-24 series intelligent outdoor high-voltage AC vacuum circuit breaker is an outdoor switchgear with three-phase AC 50Hz and rated voltage of 24kV, which is suitable for opening and closing various loads of different properties and frequent operation occasions, as well as for the construction and selection of power equipment in the urban power grid, rural power grid, mines, and railways. This product does not pollute the surrounding environment, and it is the requirement of green and environment-friendly circuit breakers in line with GB/T1984-2014 High Voltage AC Circuit Breakers, DLT402-2007 Technical Conditions for Ordering High Voltage AC Circuit Breakers, DL/T 403-2000 Technical Conditions for Ordering 12k-40.5kV High Voltage Vacuum Circuit Breakers and other standards.
MODEL DESCRIPTION
USAGE: ENVIRONMENTAL CONDITION
- Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
- Ambient temperature: -40oC ~ +45oC, Daily average temperature change ≤ 25ºC
- Wind Speed: 34m/s
- Wind pressure: 700Pa
- Pollution level: IV level
- Icing thickness: Not more than 10mm
- Atmospheric Relative Humidity: Daily average ≤ 90%, Monthly average ~ ≤ 90%
MAIN TECHNICAL PARAMETERS
5.1 Circuit Breaker's Main Technical Parameters Table
| S/N |
Name |
Unit |
Data Value |
| 1 |
Rated Voltage |
kV |
40.5 |
| 2 |
Rated Current |
A |
1250/1600 |
| 3 |
Rated Frequency |
Hz |
50/60 |
| 4 |
Rated Insulation
Level |
1 min. Power Frequency Withstand Voltage |
To earth, fracture(wet) |
kV
|
50 / 64 |
| To earth, fracture(dry) |
65 / 79 |
| Secondary Circuit to earth |
2 |
| |
To earth, fracture |
125/145 |
| 5 |
Rated Short-circuit Breaking Current |
kA |
20 |
25 |
| 6 |
Rated Short-circuit Closing Current (Peak Value) |
50 |
63 |
| 7 |
Rated Short-time Withstand Current |
20 |
25 |
| 8 |
Rated Peak value Withstand Current |
50 |
63 |
| 9 |
Rated Short-circuit Breaking Current - Breaking times |
Times |
30 |
| 10 |
Rated Short-time Continuous Time |
s |
4 |
| 11 |
Rated Operating Voltage and Auxilliary Circuit rated voltage |
V |
0 - 0.3s - C0 - 180s - CO |
| 12 |
Rated Operating Order |
|
30 |
| 13 |
Rated current of overcurrent release |
A |
5 |
| 14 |
Mechanical Life |
Times |
10000 |
| 15 |
Weight |
Without isolating force |
kg |
115 |
| With Isolating force |
138 |
5.2 Circuit Breaker's Mechanical Properties Adjustment Parameters
| S/N |
Name |
Unit |
Data Value |
| 1 |
Contact Spacing |
mm |
12 ± 1 |
| 2 |
Contact Overtravel |
3 ± 0.5 |
| 3 |
Center distance between phases |
380 ± 1.5 |
| 4 |
Three-phase Opening and Closing Asynchrony |
ms |
≤ 2 |
| 5 |
Contact Closing Bounce Time |
≤ 2 |
| 6 |
Closing Time |
25 ~ 45 |
| 7 |
Opening Time |
25 ~ 45 |
| 8 |
Average Opening speed |
ms |
1.0 ~ 1.4 |
| 9 |
Average Closing speed |
0.6 ~ 1.0 |
| 10 |
Resistance of main electrical circuit |
μΩ |
≤ 100 |
OUTLINE AND INSTALLATION DIMENSION
Our Customer
Our customers are located all over the world.
Test Reports
All products have undergone professional testing and certification.
Photos of Product
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