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General Information 2‐13
MN2408
Battery Charger
An engine mounted alternator charges the batteries during engine operation. Standby gensets
should include a solid state battery charger that is connected to utility power so the battery is
charged continuously while the genset is not running. The battery charger should be connected
to the utility power emergency circuit. The batteries on prime power gensets are charged by the
engine mounted alternator, if equipped.
The output of the battery charger or the belt driven alternator must be connected directly to the
battery or to the battery terminals on the starter to prevent the electronic governor from acting
erratically. Make control connections to the genset control using a conduit with a flexible section
at the genset to avoid damage due to genset vibrations.
Battery Cables
The wire size (wire gauge) of the cables connecting the starter to the batteries must be large
enough to ensure proper voltage at the engine starter motor during cranking. The total cranking
circuit resistance includes the resistance of the cables from the starting motor to the battery and
the resistance of all relays, solenoids, switches, and connections. The resistance of various sizes
of cables is shown in Figure 2‐10. For purposes of calculating cranking circuit resistance to select
cable size, the resistance of each connection can be taken as .00001 ohms and the resistance of
each relay, solenoid, and switch can be taken as .0002 ohms. Figure 2‐10 illustrates an example
of a typical cranking circuit resistance calculation.
Figure 2‐10 Typical Battery Cable Calculations
Summary of Contents for GLC10
Page 12: ...2 2 General Information MN2408...
Page 24: ...2 14 General Information MN2408...
Page 40: ...3 16 Receiving Installation MN2408...
Page 58: ...4 18 Operation MN2408 Figure 4 15 Engine Controller Inputs Outputs...
Page 70: ...4 30 Operation MN2408 Figure 4 16 Configuration Data Sheet j j j j j j j j j...
Page 74: ...4 34 Operation MN2408...
Page 88: ...A 10 Series GLC MN2408...
Page 90: ...B 2 Series GLC MN2408 Figure B 11 Customer Interface Connection Diagram MEC20 MEC2...
Page 91: ...Series GLC B 3 MN2408 Figure B 12 Customer Interface w o Breaker Power Connection Diagram...
Page 92: ...B 4 Series GLC MN2408 Figure B 13 Single Phase w o Breaker Connection Diagram...
Page 93: ...Series GLC B 5 MN2408 Figure B 14 Single Phase One Breaker Connection Diagram...
Page 94: ...B 6 Series GLC MN2408 Figure B 15 Single Phase Two Breaker Connection Diagram...
Page 99: ...Series GLC B 11 MN2408 Figure B 20 Three Phase Connection Diagram...
Page 100: ...B 12 Series GLC MN2408 Figure B 21 Three Phase Connection Diagram with PMG...
Page 101: ...Series GLC B 13 MN2408 Figure B 22 Three Phase Connection Diagram Wire 1 0 and larger...
Page 106: ...B 18 Series GLC MN2408 Figure B 27 Control Box Connections with MEC20 Controller...
Page 107: ...Series GLC B 19 MN2408 Figure B 28 Control Box Connections with MEC20 Controller Governor...
Page 108: ...B 20 Series GLC MN2408 Figure B 29 Control Box Connections with MEC2 Controller...
Page 109: ...Series GLC B 21 MN2408 Figure B 30 Engine Wiring Woodward 4 3L GM...
Page 110: ...B 22 Series GLC MN2408 Figure B 31 Engine Wiring Woodward 5 7L GM...
Page 111: ...Series GLC B 23 MN2408 Figure B 32 Engine Wiring Woodward 8 1L GM...
Page 112: ...B 24 Series GLC MN2408...
Page 113: ...Baldor District Offices...