TP-6053 7/04
40
Section 7 Generator Troubleshooting
4. Perform a megohmmeter test on the stator as
described in the next step. Consider the stator
good 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 prior to the
in-line fuse.
5. Check the stator for a short to ground using a
megohmmeter. Apply 500 volts DC to any stator
lead from each winding and the stator frame.
Follow the instructions of the megohmmeter
manufacturer when performing this test. Repeat
the test on the other leads until all the stator
windings have been tested.
A reading of
approximately 500 kOhms (1/2 megohm) and
higher indicates the stator is good. A reading of
less than approximately 500 kOhms indicates
deterioration of the winding insulation and possible
current flow to ground. Repair or replace the stator.
F+
F--
AC
AC
AC
5588715
33
55
3
44
4
1
2
B1
B2
F1
F2
1
2
3
4
5
6
7
1. Main field (rotor)
2. Stator windings
3. Rectifier module
4. Shaft connection
5. Megohmmeter
6. Armature
7. Exciter field
Figure 7-15
Megohmmeter Connections on Stator
Содержание 10EOZ
Страница 1: ...Marine Generator Sets Models 5EOZ 8EOZ 9EOZ 10EOZ 4EFOZ 6 5EFOZ 8EFOZ 9EFOZ TP 6053 7 04a Service ...
Страница 2: ......
Страница 4: ...TP 6053 7 04 Table of Contents Notes ...
Страница 10: ...TP 6053 7 04 VI Safety Precautions and Instructions Notes ...
Страница 22: ...TP 6053 7 04 10 Section 2 Scheduled Maintenance Notes ...
Страница 24: ...TP 6053 7 04 12 Section 3 Intake and Exhaust System Notes ...
Страница 30: ...TP 6053 7 04 18 Section 4 Fuel System Notes ...
Страница 44: ...TP 6053 7 04 32 Section 6 Controller Troubleshooting Notes ...
Страница 62: ...TP 6053 7 04 50 Section 9 Generator Disassembly Reassembly Notes ...
Страница 66: ...TP 6053 7 04 54 Section 10 Voltage Reconnection and Wiring Diagrams 10 3 Wiring Diagram Schematic 229294 N ...
Страница 70: ...TP 6053 7 04 58 Section 10 Voltage Reconnection and Wiring Diagrams Notes ...
Страница 79: ......