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OM 2012
i . 3!0
(LX
low)
~~txxc;
tor oulpyi-
\~Ol!q$!
in Of I F!lnX?::.
Gcfi
erator
oil"rCIting
ai
400 Hz
in AU'fG-
MATIC
moc:c.
(Continucc.) i
.
,. : . .
Aug 25435
1. Defect
in VOLTAGE
RE G.
excitation
circuit.
(1)Defective
AUTO-
MANUAL
switch
(33,
Fig.
1)
(2) Defective
excitation-
deenergizaticn
relay
- (Kl6) (l-1; 3,
Fig.
9)
(3) Defective
ballast
re-
sistor(s),(See
Fig.
5)
D) --_-
w--w-
.
R. (CcnfinU:rc!)
!CC~
fo tcrmina 1 "F".
1; no cut.
put
Voitag? Chr;r;gC
is indicated
when the e::citer
fie!d
is crier-
gizcd,
the
gei7efatW
is defec-
tivc.
Stop cperations
and sea
2-3,
Para. 5
for :&her
generoff
testing.
If the generator
pro-
duces approximately
14%v
AC
when the exciter
field
is e:ler-
gized , the troub!e
is in the
voltage
rcgulat or -exe itaticn
circuit.
Proceed to step C.
C. Check as follows:
.
(1)Check
the switch
thorough-lly.
A defective
switch, may pre-
vent current
reaching
ahd/or
leaving
the voltage
regulator,
Replace
switch
if defective.
(2) Check EDR
contacts.
A
faulty
EDR
can
prevent
power from reaching
the voltage
regulator.
Re-
place relay
if defective.
(3)
If output
voltage
was pro-
duced when the generator
set
was operated
in MAN&L
mode, the resistors
are good.
If no voltage
was produced
in MANUAL
mode, resistors
could be defective.
Refer
to
Fig.
5 ond connect
a jumper
lead across the looI last rc-
sistors.
If an output voltage
Trouble
Shooting
Chart
(Sheet 11 of 21)
Figure
9 ,.
3-l
Page 25
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