Vacuum circuit breaker
1Good quality and competitive price
2prompt delivery,small order accepted
3ISO9001:2008,IEC standard
Summary and Technical Parameter:
ZW32-12 series pillar type outdoor Vacuum circuit breaker is a kind of outdoor H.V switch equipment with 50Hz three-phase alternating current and rated voltage 12kV. It apply to break and close the load current, overload current and short-circuit current in cities and country power distribution system
NO. | Name | Unit | Parameter | ||
1 | Rated Voltage |
| 12 | ||
2 | Rated insulation level | 1 min power frequency withstand voltage |
| Wet:34,Dry:42(positive,negative),48(fracture and isolation clearance) | |
Lightning impulse withstand voltage(peak) | earth,phase |
| 75 | ||
insulating fracture |
| 85 | |||
3 | Rated Current | A | 400,63 | ||
4 | Rated short-circuit breaking current (peak) | KA | 12.5,16,20 | ||
5 | Rated short-circuit closing current (peak) | 31.5.40.50 | |||
6 | Rated dynamic current (rated limit through-current) | 31.5,40,50 | |||
7 | Rated short time withstand current | 12.5,16,20 | |||
8 | Breaking times of rated short-circuit switch-off current | Times | 30 | ||
9 | Rated duration of short-circuit | S | 4 | ||
10 | Rated operating order |
| O-0.3S-CO-180S-CO | ||
11 | Mechanical life | Times | 10000 | ||
12 | Automatic striking and grinding cumulative thickness | mm | 3 | ||
13 | Operating mechanism rated switch-on voltage | V | AC,DC110/220 | ||
