Ambient temperature:

Maximum

+40°C

Maximum 24 hour average

+35°C

Minimum (according to minus 15 indoor classes)

-10°C

Ambient humidity:

Daily average relative humidity

less than 95%

Monthly average relative humidity

less than 90%

Earthquake intensity

less than 8 degree

Height above sea level

less than 1000m

Saturated vapor pressure:

average pressure of a day

 should be no more than2. 2kPa

the average pressure of a month

 should be no more than 1.8kPa

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

630 1250 1600
     2000 2500 3150

630 1250 1600
     2000 2500 3150 4000

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