GIS CIRCUIT BREAKER SWITCH WITH DISCONNECTOR SWITCH FOR SF6 GAS SWITCHGEAR

    Circuit breaker switch rated parameter

No

item

Unit

Parameter

1

Rated Voltage

KV

12

2

Rated frequency

HZ

50

3

Rated short-time power frequency withstand voltage

KV

42

4

Rated lightning impulse withstand voltage

KV

75

5

Rated current

A

630

6

Rated short-time withstand current

KA

20

7

Rated short-circuit breaking current

KA

20

8

Rated peak withstand current

KA

20

9

Mechanical life

?

10000

10

Rated short circuit closing current

KA

50

11

Rated short circuit duration

S

4

12

Rated operation sequence

 

O-0.3S-CO-180s-CO

13

rated cable charging breaking current

 

 

 

A

25(C2)

14

Contact allows wear thickness

mm

              ≤3

SF6 gas switchgear circuit breaker switch requirement: The isolating position of the three-station isolation switch in the open state is ≥45mm, and the grounding switch position is ≥40mm.

             

                              Mechanical parameter

 

NO.

Item

Unit

       Parameter Value

1

Splitting?breaking?time

ms

20~50

2

Closing time

ms

28~60

3

Closing contact bounce time

ms

≤2

4

Breaking contact rebound amplitude

mm

≤2

5

Breaking(splitting) three phases of different phases

ms

≤2

6

Closing three phases of different phases

ms

≤2

7

Average opening speed (contact closure position is about 75% open)

m/s

1.1±0.2

8

Average closing speed (full open distance)

m/s

0.6±0.2

9

Contact opening distance

mm

8.5±1

10

Overtravel

mm

2.5±1

 

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