Ambient condition
- Altitude: 1000m;
- Ambient temperature: +50 ~-30 ;
- Wind speed: 35m/s;
- Earthquake intensity: 8 degree;
- Air pollution: IV;
- Ice thickness: 10mm;
- Applicable occasions of normal type switch should free from chemistry aggradation, dust and other volatile & caustic thing.
Model
Structure feature
Disconnect s witch is compos ed of fuse components, frame and operating insulator, fixed contact, contact blade and linkage spring mechanism.
- Cutout fuse assemble: mainly combine with upper, down movable and fixed contact, ar c extinguis h bushing, in sulator and mou nt support pa rts, during normal work, the fuse linking the moving joint of the arc extinguish bushing with movable contactor, the arc extinguish bushing is at closed position under the pressure of the fixed contactor.
- Frame: Base is bended from steel sheet, axis with pulling arm cross through frame center. Holes drilled on base are used for fixing post insulator.
- Post and operating insulator: anti-erode post insulator.
- Fixed contactor: contact blade made of red copper plate, fixed on post insulator and extended level plane end as for connecting wire and upside of curve connected both side reliable with contacting blade.
- Contact bl ade: it’s made of two rectangle section red copper plates, both ends of contact blade attached with spiral sp ring to adjust contacting pressure.
Switch could be operated combined with CS mechanism vertical mounting on outdoor double electric poles.
Technical specification
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | kV | 12 | 40.5 | |
| 2 | Rated current | A | 100 | 100 | |
| 3 | Rated frequency | Hz | 50/60 | 50/60 | |
| 4 | Maximum breaking current | kA | 5 | 5 | |
| 5 | Main circuit resistance | 150 | 150 | ||
| 6 | 1min. PF withstand voltage (dry) | phase to phase/earth across open contacts | kV | 42/48 | 95/115 |
| 7 | 1min. PF withstand voltage (wet) | 30 | 85 | ||
| 8 | Lightning impulse withstand voltage | 95/110 | 185/215 | ||
| 9 | Mechanical life | disconnect switch | Times | 2000 | 2000 |
| fuse cutout | 300 | 300 | |||
Outline dimension
