GE M-Pact Plus Operating & Installation Instructions Manual page 121

Air circuit breakers
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LT set at 1 x ACB rating, In
LTD set at 5 s
ST set at 1.5 Ir
STD set at 300 ms
T ype S: Instantaneous release at 50kA
ST has 8 available settings
1.5, 2, 3, 4, 6, 8, 10, 12 x Ir
Indicated: 1.5 x Ir and 12 x Ir
STD adjustable:
Inst to 1.0 s in 0.1 steps
Indicated: Inst, 100 & 300 ms
LT set at 1 x ACB rating, In
LTD set at 5 s
ST set at 1.5 Ir
STD set at INST
T ype S: Instantaneous release at 50kA
*Overload & delayed short circuit curves @ Ir=1.0xIn
** N=I/Ir for overvload & delayed short circuit
N=I/In for instantaneous & ground
APPENDIX - C
APPENDIX - C
APPENDIX - C
APPENDIX - C
APPENDIX - C
Trip Curv v v v v es*
Trip Cur
Trip Cur
Trip Cur
Trip Cur
es*
es*
es*
es*
Mpr
Mpr
Mpr
Mpro 30 / 40 with tolerance
Mpr
o 30 / 40 with tolerance
o 30 / 40 with tolerance
o 30 / 40 with tolerance
o 30 / 40 with tolerance
LT set at 1 x ACB rating (In)
LTD s et at 35 s
SC set at 6 x Ir
SCD = 3 s
STset at 12 x Ir
STD set at 300 ms
T ype H: Instantaneous release at 80kA
LTD has 16 available settings
0,25...35 seconds at 7.2 x Ir
Indicated: 5 and 35 seconds
Current as Multiples of N**
121
APPENDIX
SC has 8 available settings
1.5, 2, 3, 4, 6, 8, 10, 12 x Ir
Indicated: 6 x Ir
SCD is fixed at 10 x the
configured LT curve
Indicated: 3.5 seconds
Instantaneous release:
T ype S 50kA
T ype N 65kA
T ype H 80kA
Indicated: S and H

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