Siemens GMSG Instruction Manual page 64

Appendix
Circuit breaker Maximum
type design voltage
1
(V)
kV rms
5-GMSG-
4.76
40-xxxx-104
5-GMSG-
4.76
50-xxxx-130
5-GMSG-
4.76
63-xxxx-164
7-GMSG-
8.25
40-xxxx-104
15-GMSG-
15.0
25-xxxx-65
15-GMSG-
15.0
40-xxxx-104
15-GMSG-
15.0
50-xxxx-130
15-GMSG-
15.0
63-xxxx-164
Table 13: Type GMSG vacuum circuit breaker ratings (new "constant kA" ratings basis)
These ratings are in accordance with:
ANSI/IEEE C37.04-1999 Standard Rating
Structure for AC High-Voltage Circuit
Breakers
ANSI/IEEE C37.06-2009 AC High-
Voltage Circuit Breakers Rated on a
Symmetrical Current Basis - Preferred
Ratings and Related Required
Capabilities for Voltages Above 1,000
Volts
ANSI/IEEE C37.09-1999 Standard Test
Procedure for AC High-Voltage Circuit
Breakers Rated on a Symmetrical
Current Basis
ANSI/IEEE C37.010-1999 Application
Guide for AC High-Voltage Circuit
Breakers Rated on a Symmetrical
Current Basis.
64
Voltage range
factor (k)
3
2
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Footnotes:
"xxxx" in type designation refers to the
1.
continuous current rating 1,200 A, 2,000 A
or 3,000 A, as appropriate. The 4,000 A fan-
cooled rating is achieved using a 3,000 A circuit
breaker, in combination with fan cooling as
indicated in Footnote 4.
Maximum design voltage for which the circuit
2.
breaker is designed and the upper limit for
operation.
K is listed for information purposes only. For
3.
circuit breakers rated on a "constant kA" ratings
basis, the voltage range factor is 1.0.
4000FC indicates that fan cooling is included in
4.
the switchgear structure for this rating. 4000 A
rating is not available in outdoor equipment.
5. All values apply to polyphase and line-to-line
faults.
Standard duty cycle is O - 0.3s - CO - 3 min. - CO.
6.
Standard rating interrupting time is five-cycles
7.
(83 ms). Optional rated interrupting time of
three-cycles (50 ms) is available (except with
24 Vdc tripping).
Withstand voltage levels
Power frequency Lightning impulse
kV rms (BIL)
kV crest
19 60
19 60
19 60
36 95
36 95
36 95
36 95
36 95
Continuous Short-circuit (I)
current
4 6
A rms kA rms sym
1,200, 2,000,
40
3,000, 4,000FC
1,200, 2,000,
50
3,000, 4,000FC
1,200, 2,000,
63
3,000, 4,000FC
1,200, 2,000,
40
3,000, 4,000FC
1,200, 2,000 25
1,200, 2,000,
40
3,000, 4,000FC
1,200, 2,000,
50
3,000, 4,000FC
1200, 2000,
63
3000, 4000FC
5,