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

1250

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

120±50

额定开距时的触头反力
Force required to hold contacts open at full stroke

N

200±50

触头允许磨损厚度 Contact-wear allowance thickness

mm

3

内部气体压力Internal gas pressure

Pa

≤1.33×10ˉ³

允许贮存期 Storage period

年year

20

项目Project

单位

Unit

数值

Value

触头开距Contact stroke

mm

11±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