ABB VM1-T, Manual

Page: 33 / 44

(
1
) At operating voltages lower than the rated voltage, the same values fundamentally apply as for the rated voltage. Higher values on request.
(
2
) Individual unit without truck
M ED I U M VO LTAG E P R O D U C T S 33
10.2 Technical data
Circuit breakers for fixed installation
10.2.1 Performance data and weights
Rated voltage kV 12 17.5 24
Rated frequency Hz 50/60 50/60 50/60
Rated lightning impulse withstand voltage kV 75 95 125
Rated power frequency withstand voltage kV 28 38 50
Rated of rise of transient recovery voltage kV/μs 0.34 0.42 0.47
Peak transient recovery voltage kV 20.6 30 41
Rated operating sequence O-3 min-CO-3 min-CO
Rated operating sequence for autoreclosing O-0.3 s-CO-3 min-CO
Guideline values for function times: kV
Closing time approx. 16 ms
Opening time approx. 10 ms
Arcing duration (at 50 Hz) ≤ 15 ms
Total opening time ≤ 25 ms
Minimum command time on closing 2 ms
Minimum command time on opening 2 ms
Breaker
type Rated
voltage Rated
current Rated short-
circuit breaking
current symm. (
1
)
Pole
centres Weight (
2
) Permissible of
vacuum-interrupter
switching operations
VM1-T kV A kA mm approx. kg Figure 9/28 page 32
1212-20 12 1250 20 210 90/95 Diagram B
1220-20 2000 210/275 135/140 Diagram C
1212-25 12 1250 25 210 90/95 Diagram D
1220-25 2000 210/275 135/140 Diagram E
1720-25 17.5 2000 25 210/275 135/140 Diagram E
2412-20 24 1250 20 210 100/105 Diagram B
2412-25 24 1250 25 275 100/105 Diagram D