TEST OF REGULATOR EXCITER ASSEMBLIES
TESTING AND ADJUSTING
TEST OF REGULATOR EXCITER ASSEMBLIES
(Regulator Removed From Generator)
FABRICATED TOOLING - FT1488
The special fabricated tooling ( FT1488) provides a way
to
test
the
power
generator
regulator
-
exciter
assemblies. It allows testing after repairs without
connecting to the generator set.
TEST PROCEDURE
1.
Preparation
A.
Connect regulator-exciter to the FT tester as
directed by connection chart.
CONNECTION CHART
Tester
Terminal
1
2
3
4
5
6
7
8
SR-4
Terminal
5
6
24
26
22
20
F1
F2
B.
Set voltage, droop and gain controls full CCW.
C.
Set tester variac control CCW.
D.
Turn power switch on.
2.
Relay Test
A.
Turn the variac slowly CW. at 90 ± 20 volts,
there should be slight drop in the field voltage as
the relay energizes.
3.
Level control test
A.
Set voltage level control to mid-range position.
B.
Increase the variac position, raise general.
voltage, until the field voltage starts to decrease
and the load lamp starts to dim. This condition
should occur between 200 and 260 volts on the
generator voltmeter.
C.
Turn the voltage level control CW. the field
voltage should increase and the load lamp
should brighten.
D.
Turn the voltage level control CCW. the field
voltage should decrease and the load lamp
should dim.
4.
Gain control test
A.
Set variac, generator voltmeter. to '240 volts.
B.
Adjust level control till load lamp is dim.
C.
Turn gain control CW. load lamp brightness
should increase, field voltage should Increase.
5.
Droop control test
A.
Set gain control CCW.
B.
Set variac, generator voltmeter, to 240.
C.
Adjust level control till load lamp is dim.
D.
Turn droop control CW, load lamp should go out,
field voltage should decrease.
NOTE: If the load lamp gets brighter and field
voltage increases, reverse the secondary leads of
transformer T3. This should only occur the first time
the tester is used.
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