2-5
Generator Diagnostics
The other type is a dual lead coil which is used in
generator applications. It has an insulated wire
wrapped around an iron core with neither end
attached to the core. Because the wire is insulated
there is no physical contact between the wire and
the core. A normal resistance test is performed by
attaching the meter leads to each end of the coil
leads.
In this case a short to ground test does apply. The
short to ground test is performed by connecting one
lead of the meter to either coil lead and the other
meter lead to the core. With the meter on the highest
ohm scale possible, it should read an open circuit.
Any resistance reading at all, indicates a bad coil.
In the generator’s stator assembly, there are actually
two individual coils wrapped separately around the
same core. This is where the shorted together test
comes in.
When one meter lead is attached to any wire from
one of the coils and the other meter lead is attached
to any wire from the other coil, an open circuit should
exist.
Any resistance reading indicates the two coils are
shorted together.
Test the main and sub-coils for a short to ground.
With the meter on the highest resistance setting and
one meter lead on either the Red or the Brown wire
from the main coil and the other lead on the core,
there should be an open circuit.
DUAL LEAD COIL RESISTANCE TEST
DUAL LEAD COIL SHORT TO GROUND TEST
DOUBLE COIL SHORTED TOGETHER TEST
MAIN COIL SHORT TO GROUND TEST
Summary of Contents for EF4500iSE - Inverter Generator
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Page 50: ...2 16 Yamaha Generator Theory Diagnostics Guide...
Page 51: ...2 17 Generator Diagnostics...
Page 53: ...2 19 Inverter Generator Diagnostics...
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Page 101: ...3 25 Current Model Specifications and Wiring Diagrams EF2800i INVERTER GENERATOR EF2800i...
Page 102: ...3 26 Yamaha Generator Theory Diagnostics Guide EF2800i WIRING DIAGRAM...
Page 103: ...3 27 Current Model Specifications and Wiring Diagrams EF2800i 5W 30...
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Page 105: ...3 29 Current Model Specifications and Wiring Diagrams EF2800i...
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Page 107: ...3 31 Current Model Specifications and Wiring Diagrams EF2800i...
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Page 117: ...3 41 Current Model Specifications and Wiring Diagrams YG4000DE...
Page 118: ...3 42 Yamaha Generator Theory Diagnostics Guide INVERTER GENERATOR EF4000DE...
Page 119: ...3 43 Current Model Specifications and Wiring Diagrams YG4000DE 5W 30...
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Page 121: ...3 45 Current Model Specifications and Wiring Diagrams YG4000DE...
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Page 123: ...3 47 Current Model Specifications and Wiring Diagrams YG4000DE...
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Page 125: ...3 49 Current Model Specifications and Wiring Diagrams YG4000DE...
Page 126: ...3 50 Yamaha Generator Theory Diagnostics Guide INVERTER GENERATOR EF4500iSE...
Page 127: ...3 51 Current Model Specifications and Wiring Diagrams EF4500iSE EF4500iSE WIRING DIAGRAM...
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Page 129: ...3 53 Current Model Specifications and Wiring Diagrams EF4500iSE 5W 30...
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Page 131: ...3 55 Current Model Specifications and Wiring Diagrams EF4500iSE...
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Page 133: ...3 57 Current Model Specifications and Wiring Diagrams EF4500iSE...
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Page 135: ...3 59 Current Model Specifications and Wiring Diagrams EF4500iSE...
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Page 147: ...3 71 Current Model Specifications and Wiring Diagrams EF6300iSDE INVERTER GENERATOR EF6300iSDE...
Page 148: ...3 72 Yamaha Generator Theory Diagnostics Guide EF6300iSDE WIRING DIAGRAM...
Page 149: ...3 73 Current Model Specifications and Wiring Diagrams EF6300iSDE...
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Page 165: ...3 89 Current Model Specifications and Wiring Diagrams EF12000DE EF12000DE...
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Page 167: ...3 91 Current Model Specifications and Wiring Diagrams EF12000DE EF12000DE...
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Page 169: ...3 93 Current Model Specifications and Wiring Diagrams EF12000DE EF12000DE...
Page 170: ...3 94 Yamaha Generator Theory Diagnostics Guide CONVENTIONAL GENERATOR EF12000DE Control Box...
Page 171: ...3 95 Current Model Specifications and Wiring Diagrams EF1200DE EF12000DE WIRING DIAGRAM...
Page 180: ...3 104 Yamaha Generator Theory Diagnostics Guide CONVENTIONAL GENERATOR YG4000D...
Page 181: ...3 105 Current Model Specifications and Wiring Diagrams YG4000D...
Page 182: ...3 106 Yamaha Generator Theory Diagnostics Guide YG4000D WIRING DIAGRAM...
Page 183: ...3 107 Current Model Specifications and Wiring Diagrams YG4000D...
Page 184: ...3 108 Yamaha Generator Theory Diagnostics Guide 5W 30...
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Page 218: ...2009 Yamaha Motor Corporation U S A Printed in U S A LIT BKTEC GN 01...