真空灭弧室:ZKTD-12/630-20(ZW32专用陶瓷管,ZW20专用陶瓷管);TD-12/630-20(ZW32专用陶瓷管,ZW20专用陶瓷管);ZKTD-12/630-20(VS1专用陶瓷管,ZN28专用陶瓷管),ZKTD-12/630-25(VS1专用陶瓷管,ZN28专用陶瓷管);ZKTD-12/630-31.5(VS1专用陶瓷管,ZN28专用陶瓷管);ZKTD-12/1250-25(VS1专用陶瓷管,ZN28专用陶瓷管);ZKTD-12/1250-31.5(VS1专用陶瓷管,ZN28专用陶瓷管);ZKTD-12/1600-25(VS1专用陶瓷管,ZN28专用陶瓷管);ZKTD-12/1600-31.5(VS1专用陶瓷管,ZN28专用陶瓷管)
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 120±50
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 9±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 1300/1600±100
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