TP-6255 7/06
69
Section 8 Component Testing and Adjustment
Leads
Continuity
1 and 4
2 and 5
3 and 6
7 and 10
Yes
8 and 11
9 and 12
55 and 66
1 and 2, 3, 7, 8, or 9
1 and 55
No
Any stator lead and ground
Figure 8-13
Stator Continuity Test Results on a Good
Stator (3-Phase)
5. Check the cold resistance of the stator windings by
connecting the meter leads to the stator leads as
shown in Figure 8-12 or Figure 8-13.
See
Section 1, Specifications for the stator resistance
values. If the stator resistance test is inconclusive,
perform a megohmmeter test on the stator as
described in the next step.
Note:
Consider
the
stator
functional
if
the
resistance reading (continuity) is low and
there is no evidence of shorted windings
(heat discoloration).
Note:
When taking an ohmmeter reading using
lead 55, make the connection before the
in-line fuse.
Note:
The stator resistance can vary directly with
increased temperature.
If any of the stator readings vary during the previous
checks, replace the stator.
6. Check the stator for a short-to-ground condition
using a megohmmeter.
See Figure 8-14 for a
single-phase
megohmmeter
connections
and
Figure 8-15
for
three-phase
megohmmeter
connections. Apply 500 volts DC to any stator lead
from each winding and the stator frame. Follow the
megohmmeter manufacturer’s instructions for
using the megohmmeter. Repeat the test on the
other leads until all of the stator windings have
been tested. A reading of 1.5 MOhms and higher
indicates the stator is functional. A reading of less
than 1.5 MOhms indicates deterioration of the
winding insulation and possible current flow to
ground; if so, repair or replace the stator.
1
5
6
7
8
9
F+
F--
AC
AC
AC
66
55
3
4
1
2
F1
F2
3
2
4
TP-5983-7
1. ADC’s voltage regulator power supply leads
2. Sensing leads (208--240 volts nominal)
3. Stator windings
4. Main field (rotor)
5. Rectifier module
6. Frame connection
7. Megohmmeter
8. Armature
9. Exciter field
Figure 8-14
Megohmmeter Connections on 1-Phase
Stator
TP-5983-7
1
2
6
3
4
5
7
8
F1
F2
9
1. ADC’s voltage regulator power supply leads
2. Sensing leads (208--240 volts nominal)
3. Stator windings
4. Main field (rotor)
5. Rectifier module
6. Frame connection
7. Megohmmeter
8. Armature
9. Exciter field
Figure 8-15
Megohmmeter Connections on 3-Phase
Stator
Содержание 6.5-27EFOZD
Страница 1: ...Marine Generator Sets Models 8 32EOZD 6 5 27EFOZD TP 6255 7 06a Service ...
Страница 12: ...TP 6255 7 06 12 Service Assistance Notes ...
Страница 22: ...TP 6255 7 06 22 Section 1 Specifications Notes ...
Страница 28: ...TP 6255 7 06 28 Section 3 Intake and Exhaust System Notes ...
Страница 62: ...TP 6255 7 06 62 Section 7 Controller Notes ...
Страница 78: ...TP 6255 7 06 78 Section 8 Component Testing and Adjustment Notes ...
Страница 87: ...TP 6255 7 06 87 Section 10 Wiring Diagrams GM46351 Figure 10 2 Wiring Diagram for 9EOZD 7EFOZD Model ...
Страница 88: ...TP 6255 7 06 88 Section 10 Wiring Diagrams ADV6845A F Figure 10 3 Wiring Schematic for All Models ...
Страница 89: ...TP 6255 7 06 89 Section 10 Wiring Diagrams ADV6845B F Figure 10 4 Wiring Diagram Schematic for All Models ...
Страница 92: ...TP 6255 7 06 92 Section 10 Wiring Diagrams Notes ...
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