Shielded Solid Insulation
Shielded layer of conductive material makes the surface at earth potential everywhere; it is accidently touchable providing safety features for operator.
This shielded solid insulated switchgear, which is completely solid insulated, has entire circuit insulated by epoxy and silicon rubber, leaves no live parts in free air; given switchgear less affection of dirt, humidity and pollutions etc.; requires less necessity for maintenance. Each phase is self-contained into single epoxy block, significantly reducing phase to phase discharge and risks of internal arc fault.
1. Modular architecture enables reduction of switchgear dimensions
2. Dimensions of 40.5kV Solid Insulated Switchgear: 700 × 2000 × 1150 it is only 1/6 of traditional air insulated type ie KYN61.
Optimized Electric Field
Computing technology facilitate optimal design of electric field and isolation.
All Operating Condition Environment
1. Ambient temperature: -50 ℃ ~ +70 ℃;
2. Altitude: ≤ 5500 m
3. Internal and external arcing test report (switches, bus bar, cable compartment) detection
4. Immersion detection test report
5. Salt spray testing report
Earthing/Disconnecting Switch Assembly
The circuit breaker is composed of mechanism transmission box and circuit breaker poles.
There are three internal cone socket in the poles, among which the 2# cone is used for installing lightning arrester, and the two 3# cone are used for connecting 630A cables.
|Vacuum Circuit Breaker||Disconnecting Switch||Earthing Switch|
|Main Circuit Resistance||μΩ||≤120||≤120||≤120|
|Power Frequency Withstand Voltage(1min)||kV||118||118||118|
|Lightning Impulse Withstand Voltage||kV||215||215||215|
|Rated Short Circuit Breaking Current||kA||31.5|
|Rated Short Circuit Making Current||kA||80|
|Rated Short Time Withstand Current||kA||31.5||31.5||31.5|
|Rated Peak Withstand Current||kA||80||80||80|
|Internal Arcing Test (AFLR level)||kA/s||31.5kA/0.5s (including bus compartment, switch compartment, cable compartment)|
|Degree of Protection||IP67||IP67||IP67|