Timing Characteristics - ABB AMVAC Technical Manual

5/15/27 kv ansi magnetic mechansim vacuum circuit breaker
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AMVAC breaker

Timing characteristics

Total interrupting time consists of opening time plus the time
required for arc interruption. Total interrupt time is 50 ms or less
for three cycle breakers and 83 ms or less for five cycle brea-
kers.
Voltage class
kV
5
8.25
15
27
Continuous current
Short circuit current
A
kA
1200
25
31.5
40
50
2000
25
31.5
40
50
3000
25
31.5
40
50
1200
40
2000
40
3000
40
1200
25
31.5
40
50
2000
25
31.5
40
50
3000
25
31.5
40
50
1200
16
25
2000
16
25
Interrupt time
Closing time
Cycles
ms
3
45-60
3
45-60
5
45-60
5
45-60
3
45-60
3
45-60
3
45-60
5
45-60
3
45-60
3
45-60
3
45-60
5
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
3
45-60
AMVAC | SafeGear HD 7

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