SF6 HV Outdoor Circuit Breaker

Model NO.: LW3-12 I. II Specification: IEC Trademark: Tianan Origin: Cn Technical parameter:

NO
Name
Unit
Data

1
Rated voltage
KV
12

2
Rated insulating level(the pressure of SF6 in the breaker is 0.25Mpa, the temperature is 20 )
Lightning impulse withstand voltage
(full wave)
KV
75

Rated 1min power frequency withstand voltage
42

The voltage withstand test under the condition of raining
34

3
The insulating level under zero pressure
(the pressure on the highest phase is 5min)
KV
9

4
Rated current
A
400 630

5
Rated short-circuit breaking current
KA
6.3 8 12.5

6
The breaking current under zero pressure of t
A
400 630

7
Rated short-circuit breaking times
Times
20

8
Rated operative sequence
Type I

Off-180s-on/off-
180s- on/off

Type II
Off -0.5s- on/off -
180s- on/off

9
Rated short-circuit breaking current

(peak value)
KA
16 20 31.5

10
Rated peak withstand current

(peak value)
KA
16 20 31.5

11
Rated short-time withstand time
S
4

12
Rated short-time withstand current
KA
6.3 8 12.5

13
Rated operating pressure
M PA
0.35

14
The lowest operating pressure
M PA
0.25

15
Annual leak rate
&

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