China 12kv High Voltage Vacuum Interrupter for Load Break Switch, Find details about China Vacuum Interrupter, Hv Vacuum Interrupter from 12kv High Voltage Vacuum Interrupter for Load Break Switch
Parameter item | Unit | Data |
Rated voltage | kV | 12 |
Rated current | A | 630 |
Rated frequency | Hz | 50/60 |
Rated short-time power frequency withstand voltage(1 min) | kV | 42 |
Rated lightning impulse withstand voltage | kV | 75 |
Rated short-time withstand current | kA | 20 |
Rated peak withstand current | kA | 50 |
Rated short-circuit making current | kA | 50 |
Rated short-circuit duration | s | 3 |
Rated power load breaking current | A | 630 |
Rated closed-loop breaking current | A | 630 |
Rated cable charging breaking current | A | 10 |
Rated no-load transformer breaking current | A | 72.5 |
Rated transfer current | kA | 3.15 |
Mechanical life | times | 10000 |
Contact closing force due to bellows and atomsphere | N | 60±20 |
Force required to hold contact open at full stroke | N | 90±30 |
Circuit resistance at lowest rated contact force | μΩ | ≤30 |
Contact limit erosion | mm | 3 |
Internal gas pressure | Pa | ≤1.33×10-3 |
Weight of moving parts | kg | 0.3 |
Storage life | year | 20 |
Parameter item | Unit | Data |
Rated clearance between open contacts | mm | 6±1 |
Average opening speed | m/s | 1.0±0.2 |
Average closing speed | m/s | 0.6±0.2 |
Rated contact pressure | N | 700±100 |
Contact bouncing duration at closing operation | ms | ≤3 |
Closing and opening non-simultaneity of contacts | ms | ≤2 |
Maximum rebound during opening | mm | ≤2 |
Rated contact stroke | mm | 3±0.5 |