参数名称 Parameter name

单位Unit

参数值Value

额定电压Rated voltage

kV

40.5

额定电流Rated current

A

1250

额定频率Nominal frequency

Hz

50/60

短时(1min)工频耐受电压
Short time power frequency withstand voltage (1min)

kV

70

雷电冲击耐受电压
Lightning impulse withstand voltage

kV

170

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

kA

20

额定峰值耐受电流
Rated peak withstand current

kA

50

额定短路关合电流
Rated short circuit making 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 breaking current of single capacitor bank

A

630

额定背对背电容器组开断电流
Rated breaking current of back to back capacitor bank

A

400

机械寿命
Mechanical endurance

次time

10000

触头自闭力
Closing force due to bellow and atmosphere

N

60±20

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

N

145±20

触头允许磨损厚度Contact limit erosion

mm

3

真空灭弧室内部气体压力
Gas pressure inside vacuum interrupter

Pa

≤1.33×10ˉ³

运动部分的质量Weight of moving parts

kg

0.45

真空灭弧室质量
Weight of vacuum interrupter

kg

1.2

触头开距Clearance between open contacts

mm

15±1

平均分闸速度Average opening speed

m/s

1.6±0.2

平均合闸速度Average closing speed

m/s

0.8±0.2

额定触头压力Rated contact force

N

700±100

触头合闸弹跳时间
Contact bouncing duration at closing operation

ms

≤2

触头合闸和分闸不同期性
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