No.

Name

Unit

Data

1

Rated Voltage

kV

72.5

2

Rated Frequency

Hz

50

3

Rated Current

A

3150/4000

4

Rated Short-Circuit Breaking Current

kA

31.5

5

Rated Short-Circuit Making Current (Peak)

kA

80

6

Rated Peak Withstand Current

kA

80

7

Rated Duration of Short-Circuit

s

4

8

Rated Power Frequency Withstand Voltage (Dry Test)

kV

160+42(Across the contact gaps)

/

160(To Ground)

9

Creepage Distance Ratio

CM/kV

3.1

10

Rated Power Frequency Withstand Voltage (Wet Test)

kV

160+42(Across the contact gaps)

/

160(To Ground)

11

Rated Lightning Impulse Withstand Voltage

kV

410(Across the contact gaps)

/

350(To Ground)

12

5-Minute Power Frequency Withstand Voltage

kV

1.3×72.5√3

13

Closing Time

ms

≤150

14

Opening Time

ms

≤30

15

Breaking Time

ms

≤60

16

Making Time

ms

40-60

17

No-Simultaneity of Opening Operations of 3-Phase

ms

≤2

18

No-Simultaneity of Closing Operations of 3-Phase

kA

≤4

19

Rated Reclosing Operation

O-0.3s-CO-180s-CO

20

Rated SF6 Gas Pressure

MPa

0.5, 0.4

21

SF6 Gas Alarm/Locking Pressure

MPa

0.45/0.40, 0.35/0.3

22

SF6 Gas Annual Leakage Rate

%

≤0.5

23

Number of Interrupting Chambers per Pole

1

24

Mechanical Endurance

Times

3000

25

Terminal Horizontal Longitudinal Pulling Force

N

790

26

Terminal Horizontal Transverse Pulling Force

N

750

27

Terminal Vertical Pulling Force

N

750

28

Main Circuit Resistance

≤50

29

Operating Mechanism

Spring Mechanism

30

SF6 Gas Filling Mass

Kg