真空灭弧室 (TD-12/630-20)

产品简介

主要技术参数
Main technique parameter
参数名称
Parameter name  单位
Unit    数值
Value  
额定电压
Rated voltage  kV  12
额定电流
Rated normal current  A  630
额定短路开断电流
Rated short-circuit breaking current  kA  20
额定短路关合电流
Rated short-circuit making current  kA  50
额定峰值耐受电流
Rated peak withstand current  kA  50
额定短时耐受电流
Rated short-time withstand current  kA  20
额定短路持续时间
Rated duration of short circuit  S  4
额定单个电容器组开断电流
Rated single capacitor unit breaking current  A  630
额定背对背电容器组开断电流
Rated back to back capacitor unit breaking current  A  400
额定短时（1min）工频耐压
Rated short time power frequency withstand voltage(1min)  kV  42
额定触头压力下的回路电阻
Circuit resistance at lower limit of rated contact pressure  μΩ  ≤30
额定短路开断电流开断次数
Rated short circuit breaking current breaking times  次
Time  30
额定雷电冲击耐受电压
Rated lightning impulse withstand voltage  kV  75
机械寿命
Mechanical endurance  次
Time  10000
触头自闭力
Closing force due to bellow and atmosphere  N  80±30
额定开距时的触头反力
Force required to hold contacts open at full stroke  N  140±40
触头允许磨损厚度
Contact-wear allowance thickness  mm  3
真空灭弧室内部气体压力
Gas pressure inside vacuum interrupter  Pa  ≤1.33×10ˉ3

配用断路器的机械参数
Technical specifications Circuit-breaker
项目
Poject  单位
Unit    数值
Value
触头开距
Contact stroke  mm  10±1
触头接触行程
Contact travel  mm  3.5±0.5
平均合闸速度
Average closing speed  m/s  0.6±0.2
平均分闸速度
Average opening speed  m/s  1.1±0.2
额定触头压力
Rated contact pressure  N  2000±200
触头合闸弹跳时间
Contact closing bounce time  ms  ≤2
触头合闸与分闸不同期性
Out of simultaneity of contact closing and opening  ms  ≤2
分闸触头反弹幅值
Bouncing back amplitude of opening contact  mm  ≤2