Siemens GMSG-GCB

66
Table 15: Type GMSG vacuum circuit breaker ratings (historic "constant MVA" ratings basis)
Circuit breaker type
1
Nominal
voltage
class
Nominal
three-phase
MVA class
9
Maximum
design
voltage (V)
2
Continuous
current
4
Voltage
range
factor (K)
3
Withstand voltage levels
Short-circuit
(at rated
maximum
design
voltage) (I)
5,
6, 10
kV MVA kV rms A rms ----
Power
frequency
kV rms
Lightning
impulse (BIL)
kV peak
kA rms sym
5-GMSG-250-xxxx-97 4.16 250 4.76 1,200, 2,000 1.24 19 60 29
5-GMSG-350-xxxx-132 4.16 350 4.76
1,200, 2,000,
3,000, 4,000FC
1.19 19 60 41
7-GMSG-500-xxxx-111 7.2 500 8.25
1,200, 2,000,
3,000, 4,000FC
1.25 36 95 33
15-GMSG-500-xxxx-62 13.8 500 15.0
1,200, 2,000,
3,000, 4,000FC
1.30 36 95 18
15-GMSG-750-xxxx-97 13.8 750 15.0
1,200, 2,000,
3,000, 4,000FC
1.30 36 95 28
15-GMSG-1000-xxxx-130 13.8 1,000 15.0
1,200, 2,000,
3,000, 4,000FC
1.30 36 95 37
Circuit breaker type
1
Interrupting
time
11
Permissible
tripping delay
(Y)
Rated
maximum
design
voltage (V)
divided by K
(= V/K)
Maximum
symmetrical
interrupting
(K x I)
7
Short-time
current (K
x I) (three
seconds)
Closing and latching
(momentary)
ms/cycles Sec kV rms kA rms sym kA rms
Peak
( 2.7 x K x I)
8
kA peak
Asymmetrical
(1.6 x K x I)
8
kA rms
5-GMSG-250-xxxx-97 83/5 2 3.85 36 36 97 58
5-GMSG-350-xxxx-132 83/5 2 4.0 49 49 132 78
7-GMSG-500-xxxx-111 83/5 2 6.6 41 41 111 66
15-GMSG-500-xxxx-62 83/5 2 11.5 23 23 62 37
15-GMSG-750-xxxx-97 83/5 2 11.5 36 36 97 58
15-GMSG-1000-xxxx-130 83/5 2 11.5 48 48 130 77