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
Project 单位
Unit 数值
Value
触头开距
Contact stroke mm 10±1
触头接触行程
Contact travel mm 2±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
