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序号
No.
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主 要 技 术 参 数
Main Technical Specification
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型号 Type
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TD-12/630-25B
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电气参数 ELECTRIC RATINGS
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1
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额定电压 Rated Voltage
|
kV
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12
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2
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额定电流 Rated Current
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A
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630
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3
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额定频率 Rated Frequency
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Hz
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50/60
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4
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额定短时（1分钟）工频耐受电压
Rated Short-time(1min) Power-Frequency Withshand Voltage
|
kV
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42
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5
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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
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μΩ
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≤25
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6
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雷电冲击耐受电压
Lightning Impulse Withstand Voltage
|
kV
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75
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7
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额定短路开断电流
Rated Short-circuit Breaking Current
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kA
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25
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8
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额定短时耐受电流4秒Rated Short-time Withstand Current，4s
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kA
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25
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9
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额定峰值耐受电流Rated Peak Withstand Current
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kA
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63
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10
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额定短路关合电流
Rated Short-circuit Making Current
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kA
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63
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寿命 LIFE
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1
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机械寿命Mechanical Life
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Times
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10,000
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2
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额定短路开断电流开断次数
Breaking Operations of Rated Short-circuit Breaking Current
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Times
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30
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3
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储存时间 Storage Life
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years
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≥20
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4
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触头允许磨损厚度
Contacts Erosion Limit
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mm
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3
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机械数据 MECHANICAL DATA
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|
1
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触头自闭力
Contact Force From
Atmosphere
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N
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70±40
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2
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触头反力 Counterforce of Contacts at Full Stroke
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N
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130±40
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配套的真空开关设备应满足的机械参数
MECHANICAL DATA OF VACUUM SWITH EQUIPPED WITH THE
INTERRUPTERS
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1
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触头开距 Contact Stroke
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mm
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9±1
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2
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超行程 Overtrave
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mm
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3±1
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3
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平均分闸速度Average Opening Speed
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m/ s
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1.1±0.2
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4
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平均合闸速度Average closing speed
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m/ s
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0.6±0.2
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5
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触头合闸弹跳时间 Contact Bouncing Duration
at Cosing Operation
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ms
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≤2
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6
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额定触头压力 Rated Added External Contactfinal Force
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N
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2000±200
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