___________________________________________________________________________________________
ADVR-073
5
SECTION 9 : TROUBLE SHOOTING
SYMPTOM
POSSIBLE CAUSES
SOLUTIONS
Voltage does not
build up
Engine under speed
Please refer to generator service manual
Low residual voltage
Please refer to section 8. Field Flashing
B, C, F+, F
-
, Terminal connection not
properly connected
Reference from Figure 3
Figure 5
Defective generator
Please refer to generator service manual
Blown Fuse
Over excitation current / incorrect wiring
Reference from Figure 3
Figure 5
Low output voltage
A, C, B, C, Terminal incorrect connection
Reference from Figure 3
Figure 5
Defective VR or not properly connected
Check connection and VR
Under frequency
Please refer to generator service manual
Incorrect exciter specification
Please refer to generator service manual
AVR Incorrect voltage selected
Please refer to section 4. DIP Switch setting
Over output voltage
A, C, terminals not properly connected or
incorrectly connected
Reference from Figure 3
Figure 6
AVR Incorrect voltage selected
Please refer to section 4. DIP Switch setting
Output voltage
unstable (Hunting)
「
STAB
」
Stability incorrectly adjusted
Please refer to section 6. Adjustment
ATTENTION
1. AVR can be mounted directly on the engine, genset, switchgear, control panel, or any position that will not
affect operation. For dimension reference, please see Figure 2.
2. All voltage readings are to be taken with an average-reading voltmeter Meggers and high-potential test
equipment must not be used. Use of such equipment could damage the AVR.
3. Improper setting of under-frequency protection could cause the output voltage of the unit to drop or
become unstable under with changes in load. Avoid making any changes to the U/F setting unless
necessary.
SECTION 10 : FIGURE AND SIZE
ADVR-073
G
~
S
T
R
N
1000 OHM
EXT. VR
ADVR-0
73
87.0
115.0
122.
0
150.
0
20.5
51.0
5.3
O/E Over Excitation protection
SW-1 Frequency Selection
SW-2 Sensing Voltage Selection
SW-3 Activate Over-Excitation Protection
Unit : mm
U/F Frequency protection
Figure 2
Outline Drawing
SW-2 ON 170
260 Vac
Figure 3