Main Technical Parameter |
Rated voltage | 12KV |
Rated current | 630A |
Rated frequency | 50Hz |
Rated short-time Power frequency withstand voltage | 42kV |
Rated lightning impulse withstand voltage | 75kV |
Rated making current | 6300A |
Rated switching current | 5000A |
Limit switching current | 6000A |
Withstand overload current | 6300A |
Electrical endurance AC-3 | 250000 times |
Electrical endurance AC-4 | 10000 times |
Mechanical endurance | 300000 times |
Closing force due to bellow and atmosphere | 70±30N |
Force required to hold contacts open at full storke | 100±40N |
Circuit resistance at lowest rated contact force | ≤60 |
Storage life | 20 years |
Contacts limit erosion | 3mm |
Weight of movable parts | ≤0.7kg |
MECHANICAL DATA REQUIRED FOR THE MATCHED VACUUM SWITCHGEAR |
Clearance between open contacts | 6±1 mm |
Contact connection stroke | 3±0.5mm |
Average opening speed | 0.4-0.5m/s |
Average closing speed | 0.15-0.25m/s |
Rated added extemal contact final force | 220±10N |
Contact bouncing duration at closing operation | ≤2 ms |
Closing and opening non-simultaneity of three-phase contacts | ≤2 ms |