Vacuum Interrupters - BD-12/630-20(1117C)FOR CIRCUIT BREAKER(ZN63,ZN28)

TD-12/1250-20(1117)FOR CIRCUIT BREAKER (ZN63,ZN28)

TD-12/630-20(1117C)FOR CIRCUIT BREAKER (ZN63,ZN28)

Technical parameter

NO

Reference name

Unit

Date

1

Rated voltage

kV

12

2

Rated current

A

1250/630

3

Rated frequency

Hz

50

4

Working frequency withstand voltage in short time(1min)

kV

42

5

Lighting impact withstand voltage

kV

75

6

Rated short breaking current

kA

20

7

Rated peak value withstand current

kA

50

8

Rated short circuit making current

kA

50

9

Rated short time withstand current

kA

20

10

Rated short circuit lasting time

S

4

11

Rated single capacitor group breaking current

A

630

12

Rated back to back capacitor group breaking current

A

400

13

Breaking times of rated short circuit breaking current

Times

50

14

Machine life

Times

10000

15

Contact ?head auto-closing force

N

100?50

16

Counterforce at rated contact distance

N

200?50

17

Limit time Circuit resistance at rated contact force

?25

18

Contact head erosion permission length

mm

3

19

Internal gas pressure of vacuum Arc control device

Pa

?1.33?10-3

20

Mass of moving parts

kg

?1.2

21

Mass of vacuum Arc control device

kg

?3.4