Page 17 - YINGMING POWER(HIGH VOLTAGE)

ZW20A-12F
OUTDOOR HIGH-VOLTAGE INTELLIGENT
BOUNDARY VACUUM CIRCUIT BREAKER YINGMING POWER

The main technical parameters

project Unit Parameter
Rated voltage kV 12
Rated frequency Hz 50
Rated current A 630、1000、1250
Rated short-circuit breaking current kA 20、25
Rated peak withstand current (peak value) kA 50、63
Rated short-time withstand current (4s) kA 20、25
Rated short-circuit making current (peak value) kA 50、63
Mechanical life Times 10000
Breaking times of rated current Times 10000
Random times of rated short circuit breaking current Times 30
Power frequency withstand voltage (1min): interphase, ground / fracture kV 42/48
Lightning impulse withstand voltage (peak) interphase, ground / fracture kV 75/85
Secondary circuit 1min power frequency withstand voltage kV 2
net weight kg 140 (with isolation ≤ 170)

project Unit Parameter
Contact opening mm 9±0.5
Contact overtravel mm 3±0.5
Opening speed m/s 1.2±0.2
Closing speed m/s 0.6±0.2
Bounce time of contact closing ms ≤2
Center distance mm 135±1.5
External charged air insulation distance mm 240±2
External creepage distance cm/kV 3.8
Different phases of three-phase opening ms ≤2
Conductive loop resistance of each phase μΩ ≤ 150 (with isolation ≤ 200)
Closing time ms ≤ 45
Opening time ms ≤ 45
Isolation fracture opening distance mm ≥ 190
The deflection of the stylus just close position mm ≤2
Operating torque for manual opening and closing N.m ≤ 150
Rated power of energy storage motor W ≯ 40
Energy storage motor rated voltage V AC220
Rated closing operating voltage V AC220
Highest / lowest closing operating voltage V AC264/143
Rated opening operating voltage V AC220
Maximum / minimum opening operating voltage V AC264/143
Highest / lowest motor voltage V AC242/187
SF6 gas rated pressure (gauge pressure) MPa “0”

Shape and installation size (mm)

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