Main Technical Specification
|
Unit
|
Specification
|
Rated voltage
|
kV
|
17.5
|
Rated current
|
A
|
630
|
Rated frenquency
|
Hz
|
50
|
Rated short-time power frequency withstand voltage(1min)
|
kV
|
32
|
Rated lightning impulse withstand voltage
|
kV
|
95
|
Rated short-circuit breaking current
|
kA
|
16/20
|
Rated short-circuit making current(peak)
|
kA
|
40/50
|
Rated operations of short-circuit breaking current interruption
|
Times
|
30
|
Rated single capacitor bank breaking current
|
A
|
400
|
Rated short-time withstand current
|
kA
|
16/20
|
Rated peak withstand current
|
kA
|
40/50
|
Rated duration of short-circuit
|
S
|
4
|
Mechanical life
|
Times
|
30000
|
Contact closing force due to bellows and atmosphere
|
N
|
120±40
|
Counterforce at rated contact stroke
|
N
|
180±50
|
Circuit resistance at rated contact force
|
μΩ
|
≤20
|
Shelf life
|
Years
|
20
|
Contact erosion limit
|
mm
|
3
|
Weight of moving parts
|
Kg
|
≤0.7
|
|
Mechanical Data Required For Matched Vacuum Switchgear
|
Main Technical Specification
|
Unit
|
Specification
|
Rated contact stroke
|
mm
|
9±1
|
Average opening speed
|
m/s
|
1.0±0.25
|
Average closing speed
|
m/s
|
0.65±0.15
|
Added contact force
|
N
|
1300/1600±100
|
Contact bouncing duration at closing operation
|
ms
|
≤2
|
Contact bouncing bank amplitude of opening operation
|
mm
|
≤2
|
Three-pole simultaneity
|
ms
|
≤1
|