参数名称  Parameter name

单位Unit

数值Value

额定电压Rated voltage

kV

40.5

额定电流Rated normal current

A

1250

额定短路开断电流
Rated short-circuit breaking current

kA

25

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

25

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

95

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

20

额定雷电冲击耐受电压
Rated lightning impulse withstand voltage

kV

185

机械寿命 Mechanical endurance

次Time

10000

触头自闭力
Closing force due to bellow and atmosphere

N

250±50

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

N

330±60

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

22±2

触头接触行程Contact travel

mm

8±2

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

1.4±0.2

额定触头压力Rated contact pressure

N

2900±300

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