Page 15 - YINGMING POWER(HIGH VOLTAGE)

ZW8-12
OUTDOOR HIGH VOLTAGE
VACUUM CIRCUIT BREAKER YINGMING POWER
The main technical parameters

Project Unit 6.3kA 12.5kA 20kA
Rated voltage kV 12
Rated current A 630
Rated short-circuit breaking current kA 6.3 12.5 20
Rated short circuit closing current (peak) kA 16 31.5 50
Rated peak withstand current kA 16 31.5 50
Rated short-time withstand current kA 6.3 12.5 20
Lightning impulse withstand voltage (peak) kV 75
Rated insulation level
1min power frequency withstand voltage kV 42
Rated operation sequence Points-0.3s-he points-180s-he points
Mechanical life Times 10000
Rated short-circuit breaking current breaking times Times 30
Operating mechanism rated closing voltage V 110，220
Operating mechanism rated trip voltage V 110，220
Contact opening distance mm 11±1
Overtravel (contact spring compression length) mm 3±0.3
Three-phase separation and closing ms ≤2
Contact closing bounce time ms ≤2
Average opening speed m/s 1.0±0.2
Average closing speed m/s 0.7±0.15
At the highest operating voltage ms 15-50
Opening time
At the lowest operating voltage ms 30-60
Closing time ms 25-50
Main loop resistance of each phase μΩ ≤ 120(band G ≤ 200)
Dynamic and static contacts allow wear cumulative thickness mm 3
Weight kg 152(band G180)
Interphase center distance mm 175±1.5

Shape and installation size (mm)

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1. Contact the blade 5. Operating handle
2. Contact knife seat 6. Isolation switch bracket
3. The stylus strut 7. Circuit breaker
4. Insulation tie rod
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