10
ALTERNATOR OpERATORS' hANdbOOk
forward direction. A faulty diode will
show either very high readings or full
scale deflection in both directions.
REpLACEmENT
The rectifier assembly is split into two
plates, positive and negative. The main
rotor is connected across these plates.
Each plate carries 3 diodes (3 positive
biased diodes on the positive plate
and 3 negative biased diodes on the
negative plate). Care must be taken to
ensure that correct respective polarity
is observed when replacing .The diodes
must be tight enough to ensure a good
electrical and mechanical contact, but
should not be over tightened. The
recommended spanner torque is 4.06
– 4.74Nm (36 – 42 lb in).
SURGE SUppRESSOR
The surge suppressor is a metal-oxide
varistor connected across the two
rectifier plates to prevent high transient
reverse voltages in the field winding
from damaging the diodes.
This device is not polarised and will
show a virtual infinite resistance reading
in both directions. If it is defective, it will
normally fail to short circuit and show
visible signs of disintegration.
mAIN ExCITATION WINdINGS
If after establishing and correcting any
fault on the rectifier assembly the output
is still low when separately excited, then
the main rotor, exciter stator and exciter
rotor winding resistances should be
checked as the fault may be in these
Section
Resistances
Frame Size
Main Rotor
Exciter Stator
Exciter Rotor
Winding 311
SLG164A
0.44
19
0.26
0.81
SLG164B
0.48
19
0.26
0.51
SLG164C
0.52
19
0.26
0.39
SLG164D
0.56
19
0.26
0.32
SLG184E
0.64
20
0.21
0.18
SLG184F
0.74
22
0.23
0.13
SLG184G
0.83
22
0.23
0.11
SLG 184H
0.89
24
0.24
0.09
SLG 184J
0.96
24
0.24
0.07
SLG162D
0.87
18
0.26
0.68
SLG162E
0.96
18
0.26
0.43
SLG162F
1.02
18
0.26
0.32
SLG162G
1.18
19
0.27
0.18
SLG182H
1.26
19
0.27
0.14
SLG182J
1.39
20
0.21
0.11
SLG182K
1.54
20
0.21
0.08
Содержание T Series
Страница 1: ...GENERATING SET OPERATORS HANDBOOK T SERIES ...
Страница 2: ...TR Engines Operators Handbook LPG 027 08265 1 T series ...
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Страница 33: ...32 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 34: ...33 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 35: ...34 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 36: ...35 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 38: ...37 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 39: ...38 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 40: ...39 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 41: ...40 T SERIES ENGINES operators handbook Hours run Work done by Details of service Distributor Dealer Stamp Date ...
Страница 44: ...43 ...
Страница 46: ...LPG 027 08074 1 SLG SLL 16 18 SERIES Alternator Operators Handbook ORIGINAL INSTRUCTIONS ...
Страница 48: ...3 CONTENTS Introduction 4 Safety Precautions 5 Application 6 Service and Maintenance 9 ...
Страница 58: ...LPG 027 08175 1 The ECO28 Alternator Operators Handbook ...
Страница 79: ...22 THE eco28 alternator operators handbook Figure 8 2 Terminal Box Layout ...
Страница 80: ...23 THE eco28 alternator operators handbook Figure 8 3 Series Star and Series Delta Connections ...