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VI012252型真空灭弧室
VI012252型真空灭弧室技术参数 Specification: Vacuum Interrupter VI012252
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电气参数 |
Electrical Data |
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额定电压 50Hz |
Rated voltage, 50 Hz |
12kV |
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额定电流 |
Rated normal current |
630A |
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额定短路开断电流，对称的 |
Rated short-circuit breaking current, symm. |
25kA |
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最大直流分量 |
Max. DC-component |
46% |
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额定短路关合电流 |
Rated short-circuit making current |
63kA |
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额定峰值耐受电流 |
Rated peak withstand current |
63kA |
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额定短时耐受电流，4秒 |
Rated short-time withstand current, 4s |
25kA |
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开断容性电流，符合GB1984 |
Capacitive switching acc. to GB1984 |
C2Class |
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额定绝缘水平 |
Rated Insulation Level |
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额定工频耐受电压 |
Rated power-frequency withstand voltage |
42/48kV |
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额定雷电冲击耐受电压 |
Rated lightning impulse withstand voltage |
75/85kV |
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热参数 |
Thermal Data |
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额定触头压力下限时的回路电阻 |
Circuit resistance at lowest rated contact force |
≤15μΩ |
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动端导电杆最高允许耐受温度 |
Max. permitted temperature at movable stem |
170ºC |
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电寿命 |
Electrical Life |
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额定短路开断电流开断次数 |
Breaking operations of rated short-circuit breaking current |
30次 |
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机械参数 |
Mechanical Data |
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触头开距 |
Contact stroke |
8±1mm |
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分闸过冲 |
Max. over travel |
≤2mm |
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分闸反弹幅值 |
Maximum rebound during opening |
≤2mm |
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平均分闸速度（0-2mm开距) |
Average opening speed (0-2 mm stroke) |
1.2±0.2m/s |
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平均合闸速度（2mm-触头闭合) |
Average closing speed (2 mm- contact making) |
0.8±0.2m/s |
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触头弹跳持续最大时间 |
Max. bouncing duration |
2ms |
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触头分闸及合闸不同期性 |
Opening and closing non-simultaneity of three phase contacts |
≤1ms |
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额定触头压力 |
Rated added external contact final force |
2200±200N |
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触头初压力 |
Added external contact force at contact touch point |
≥1800N |
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自闭力 |
Closing force due to bellows and atmosphere |
95±20N |
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额定触头开距下触头反力 |
Force required to hold contacts open at full stroke |
190±30N |
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触头磨损最大值 |
Contact erosion limit |
3mm |
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动端导电部分质量 |
Mass of moving contact |
0.55kg |
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灭弧室质量 |
Weight of interrupter |
2.0kg |
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储存期 |
Storage life |
20年 |
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机械寿命 |
Mechanical life |
30000次 |
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