ZKTJ630/7.2

  电气参数 ELECTRIC RATINGS

1

额定电压 Rated Voltage

kV

7.2

2

额定电流 Rated Current

A

630

3

额定频率 Rated Frequency

Hz

50/60

4

额定短时（1 分钟）工频耐受电压

Rated Short-time(1min)  Power-Frequency Withshand Voltage

kV

32

5

触头自闭力下的回路电阻

Circuit Resistance At Contact  Force From Atmosphere

μΩ

≤100

6

雷电冲击耐受电压 Lightning Impulse Withstand Voltage

kV

60

7

额定关合能力 Rated Making Capacity

kA/50次Times

6.3

8

额定开断能力 Rated Breaking Capacity

kA/50次Times

5

9

极限开断能力 Limited Breaking Capacity

kA/3次Times

6.3

10

额定短时耐受电流，4 秒

Rated Short-time Withstand Current，4s

kA

6.3

11

额定峰值耐受电流 Rated Peak Withstand Current

kA

15.75

寿命 LIFE

1

机械寿命 Mechanical Life

次Times

600,000

2

电寿命 Electrical Life

次Times

40,000

3

储存时间 Storage Life

年years

≥20

4

触头允许磨损厚度 Contacts Erosion Limit

mm

2

机械数据 MECH ANICAL DATA

1

触头自闭力 Contact Force From Atmosphere

N

90±20

2

触头反力 Counterforce of Contacts at Full Stroke

N

120±30

配套的真空开关设备应满足的机械参数

MECHANICAL DATA OF VACUUM SWITH EQUIPPED WITH THE INTERRUPTERS

1

触头开距 Contact Stroke

mm

5±0.5

2

超行程 Overtrave

mm

2±0.3

3

平均分闸速度 Average Opening Speed

m/s

0.5～0.7

4

平均合闸速度 Average closing speed

m/s

0.1～0.25

5

触头合闸弹跳时间

Contact Bouncing Duration at Cosing Operation

ms

≤2

6

额定触头压力 Rated Added External Contactfinal Force

N

350