ZN23-40.5 Vacuum Circuit Breaker
Item:ZN23-40.5 Vacuum Circuit Breaker①Strong arc extinguishing ability②Long electrical life③Small size and light weight④Anti-condensation, maintenance-free⑤Protection and control circuits
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ZN23-40.5
ZN23-40.5 Vacuum Circuit Breaker is suitable for industrial and mining enterprises, substations and other power transmission and distribution systems as control and protection switches, especially for metallurgy, arc steelmaking and other industries that require frequent operations, as control and protection equipment. This product complies with GB1984-89 "AC High Voltage Circuit Breaker" standard.
Model Description
Z: Vacuum circuit breaker
N:Outdoor
23:Design Number
40.5:Rated voltage:40.5kV
▢: Rated current:630A、1250A、1600A、2000A
▢: Rated short-circuit breaking current:25kA、31.5kA
Working Environment：
1. The upper limit of ambient air temperature is not higher than +40"C, and the lower limit is not lower than -10°C (storage and transportation at -30°C are allowed):
2. In areas where the altitude does not exceed 1000m, when the product is used in a 7.2kV system, the applicable altitude can be increased by up to 3000m;
3. Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;
4. Saturated vapor pressure: the daily average value is not more than 2.2x 103MPa, the monthly average value is not more than 1.8x 103MPa, and condensation may occur when the temperature drops sharply during the humidity period;
5. The installation site should be free from frequent violent vibrations;
6. The surrounding air should not be significantly polluted by corrosive or flammable gases and water vapor;
7. The installation site should be kept dry and clean;
8. The seismic intensity should not exceed 8 degrees.
Main Technical Parameters
|
Number |
Parameter |
Unit |
Value |
|
1 |
Rated voltage |
KV |
|
|
2 |
Rated lightning impulse withstand voltage (peak) |
KV |
185 |
|
3 |
1min power frequency withstand voltage |
KV |
95 |
|
4 |
Rated frequency |
HZ |
50 |
|
5 |
Rated current |
A |
1250、 1600、2000 |
|
6 |
Rated short-circuit breaking current |
KA |
25、 31.5 |
|
7 |
Withstand current at rated short circuit |
KA |
25、 31.5 |
|
8 |
Rated peak withstand current |
KA |
63、80 |
|
9 |
Rated short circuit duration |
S |
4 |
|
10 |
Rated short-circuit breaking time |
ms |
≈90 |
|
11 |
Rated short-circuit making current |
KA |
63、80 |
|
12 |
Nominal Operation Sequence |
|
O-3s-CO-180s-CO |
|
13 |
Closing time |
ms |
50-85 |
|
14 |
Opening time |
ms |
40-85 |
|
15 |
Rated short-circuit breaking current breaking times |
time |
20 |
|
16 |
Mechanical life |
time |
10000 |
Structure And Mounting Dimensions
Product Real Shot
FAQ:
Q1:Is it possible to visit your factory?
A1:Our company is located in Zhejiang, China, near Shanghai. It is very convenient to visit us. And all clients from all over the world are highly welcome to us.
Q2:Can I order a ZN23-40.5 Vacuum Circuit Breaker sample?
A2:Yes, we accept any sample orders
Q3. What is your terms of delivery?
A3: EXW, FOB, CFR, CIF.
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