Mobile Generator
Output Voltage Troubleshooting
wc_tx000726gb.fm
77
8.9
Checking Stator Windings at the Lugs
Prerequisites
Generator shut down
Two alligator clips each connected to 12 inches of 14-gauge wire
Procedure
Follow the procedure below to check the stator windings at the lugs.
1. Place the voltage selector switch in the 480/277 position.
2. Open the lug door. Connect the alligator clips/wires to Lug 1 and to the neutral lug (N).
3. Close the lug door and place the main circuit breaker in the ON (closed) position.
4. Measure the resistance between Lug 1 and the neutral lug. Enter the reading in the
table below. Also measure the resistance between Lug 2 and the neutral lug, and lug 3
and the neutral lug. Enter these values in the table below.
5. Measure the resistance between Lug 1 and Lug 2; Lug 1 and Lug 3; and Lug 2 and
Lug 3. Enter these values into the table below. All values are in Ohms.
Are your readings approximately equal to the ideal measurements?
The stator windings have now been checked at the lugs. Continue with
Checking the Recti-
fier Diodes.
480/277 posi-
tion
L1–N
L2–N
L3–N
L1–L2
L2–L3
L1–L3
Ideal
0.2
0.2
0.2
0.4
0.4
0.4
Your reading
Yes____
No____
The main stator win-
dings and the voltage
selector switch are
OK.
1. Clean the voltage selector switch with contact cleaner.
2. Check the windings at the generator.
See
Checking Stator Windings at the Voltage Selector Switch.
1000
200
20
2
200m
F
V
A
V-
COM
1000
200
20
2
200m
F
V
A
V-
COM
wc_gr
00
393
1
Содержание G 85
Страница 1: ...Repair Manual Mobile Generator G 85 0171726en 004 0809 0 1 7 1 7 2 6 E N ...
Страница 8: ...Table of Contents MG Repair wc_br0171726en_004TOC fm 8 ...
Страница 17: ...Mobile Generator Theory of Operation wc_tx001077gb fm 17 wc_gr003303 c a a d e f b c b d e ...
Страница 58: ...ECM Sensor Troubleshooting Mobile Generator wc_tx000723gb fm 58 Notes ...
Страница 85: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 85 c h b d d e f g a wc_gr003320 a ...
Страница 87: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 87 wc_gr003321 a f e j i h b c d g ...
Страница 95: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 95 Notes ...
Страница 97: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 97 wc_gr003351 a c c e g b d f ...
Страница 99: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 99 wc_gr003352 a c c e g b d f ...
Страница 101: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 101 a c b b wc_gr003350 ...
Страница 103: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 103 wc_gr003286 a b c ...
Страница 105: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 105 ...
Страница 109: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 109 wc_gr003284 b a c d e ...
Страница 111: ...Mobile Generator Disassembly Assembly wc_tx000575gb fm 111 Notes ...
Страница 122: ...Technical Data G 85 wc_td000214gb fm 122 10 8 Generator Wiring Diagram BOM REV 0009369 124 0009459 133 0620003 129 ...