812A
High Voltage Circuit Breakers
Energy-storage Type
High-Speed Circuit Breaker
Vacuum
Fixed
Vacuum
3
Vacuum
Vacuum
ISO9001-2000, CQC
12 Month
12kv
630A
50Hz
85kv
ZGVE
Standard Export Packing.
Vacuum
Wenzhou
8538900000
Product Description
12KV Center Distance 205mm Solid Sealed Pole(812A) EP-12/630-25
Main Technical Data
Dimensional Drawing
Main Technical Data
| Main Technical Data | |
| Rated Voltage | 12kV |
| Rated Current | 630/1250A |
| Rated Frequency | 50Hz |
| Rated Short-time power frequency withstand voltage(1min) | 48kV |
| Rated Lighting impulse withstand voltage | 85kv |
| Rated short-time withstand current | 25/31.5KA |
| Rated peak withstand current | 63/80kA |
| Rated short-circuit making current | 63/80kA |
| Rated shirt-circuit breking current | 25/31.5KA |
| Breaking operations of rated short circuit breaking current | 30times |
| Rated back-to-back cap acitor breaking current | 400A |
| Rated sigle capacitor bank breaking current | 630A |
| Mechanica life | 30000times |
| Contact closing force due to bellows and atmosphere | 120±50N |
| Counterforce at rated contact stroke | 180±50N |
| Circuit resistance at rated contact force | ≤40μΩ |
| Shelf life | 20 years |
| Contact erosion limit | 3mm |
| Part Discharge | ≤1pC |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Mechanical Data Required for matched vacuum switchgear | |
| Rated contact stroke | 9±1mm |
| Contact Connection Stroke | 4±1mm |
| Average opening speed | 1.1±0.2m/s |
| Average closing speed | 0.6±0.2m/s |
| Added contact force | 2000±200N |
| Contact bouncing duration at closing operation | ≤2ms |
| Out of simultaneity of contact closing and opening | ≤1ms |
| Max.overtravel | ≤2mm |
Dimensional Drawing
