ZW8-12(G) Series Outdoor High Voltage Vacuum Circuit Breaker
Product Structure
ZW8-12 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12kV,50/60Hz power system. Its applicable for substations, industry and mining, urban and rural electricity power networks, especially applicable in occasions with frequent operation and automatic power distribution network. It accords with the standards of IEC62271- 100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV General technical requirement of switch and control apparatus.
Ambient Condition
- Altitude: ≤2000mm;
- Ambient air temperature: -40℃ ~+45℃ ;
- Wind speed: 34m/s;
- Earthquake intensity: 8 degree;
- Relative humidity: monthly average 90%, daily average 95%;
- Ice thickNess: 10mm ;
- Pollution degree: IV;
- There will be have dew under the condition of high temperature low down hastily.
|
No. |
Name |
Unit |
Data | ||
| 16kA | 20kA | 25kA | |||
| 1 Rated voltage | kV | 10 | ||
| 2 Max. operation voltage | kV | 12 | ||
| 3 Rated current | A | 630/1250 | ||
| 4 Rated short-circuit breaking current | kA | 16 | 20 | 25 |
| 5 Rated short-circuit making current | kA | 40 | 50 | 63 |
| 6 Rated short-time withstand current | kA | 40 | 50 | 63 |
| 7 Rated short-time withstand current | kA | 16 | 20 | 25 |
| 1min P.F withstand voltage
8 Rated Insulate level Lightning impulse withstand voltage(peak |
kV
) kV |
42/48
75 |
||
| 9 Rated operating sequence | O-0.3s-CO-180s-CO | |||
| 10 Mechanical life | Times | 10000 | ||
| 11 Rated short-circuit breaking current breaking times | Times | 30 | ||
| 12 Rated Operating Setup Closing Voltage | V | AC220,DC220,100 | ||
| 13 Rated Operating Setup Opening Voltage | V | AC220,DC220,100 | ||
| 14 Contact Stroke | mm | 11±1 | ||
| 15 Contact Over travel (Contact Spring Constringent Length) | mm | 3 | ||
| 16 Out Of Simultaneity Of Contact Closing And Opening | ms | ≤2 | ||
| 17 Contact Closing Bounce Time | ms | ≤2 | ||
| 18 Average opening Speed | m/s | 1.0±0.2 | ||
| 19 Average Closing Speed | m/s | 0.7±0.15 | ||
| The Highest Operating Voltage
20 Opening Time |
s | 0.015-0.05 | ||
| The Lowest Operating Voltage | s | 0.03-0.06 | ||
| 21 Contact Closing Time | s | 0.025-0.05 | ||
| 22 Current by Phase Circuit Resistance | μΩ | ≤120(≤200) | ||
| 23 Contact erosion limit | mm | 3 | ||
