Outdoor Vacuum Circuit Breaker 24kV 2000A for Substation and Power Plant

0

ltem

Units

Technical parameters

1

Rated voltage

KV

12

2

Rated short-duration power frequency withstand voltage

42/48(Interphase,ground/fracture)

3

Rated lightning impulse withstand voltage

42/48(Interphase,ground/fracture)

4

Rated frequency

Hz

50

5

Rated current

A

630 1250

63012501600200025003150

63012501600200025003150

6

Rated short-circuit breaking current

KA

20/25

31.5

40

7

Rated short-time withstand voltage

20/25

31.5

40

8

Rated short circuit duration

S

4

9

Rated peak withstand current

KA

50/63

80

100

10

Rated short circuit closing current

50/63

80

100

11

Secondary circuit power frequency withstand voltage(1min)

2000

12

Rated single /back to back capacitor group breaking current

A

630/400(40kA:800/400)

13

Rated capacitor bank closing current

12.5(frequency is not greater than)

14

Mechanical life

KA

20000

15

Rated current breaking times(electrical life)

20000

16

Rated short circuit current breaking times

times

50(40KA≤30)

17

Dynamic and static contacts allow wear cumulative thickness

mm

3

18

Energy storage time

S

≤10

19

Contact opening distance

mm

11±1

20

overtravel

3.5±0.5

21

Contact closing bounce time

ms

≤2(40KA≤3)

22

Three-phase split/closed period

≤2

23

Average opening speed (contacts are separated by-8mm)

m/s

1.2±0.2

24

Main conductive loop resistance

0.6±0.2

25

Main conductive loop resistance

μΩ

≤50(630A)=45(1250A)
≤40(1600,2000A)≤35(2500A or more)

26

Rated operation sequence

0-0.3s-Co-180s-Co