TM 5-6115465-34
TO 35 C2-3446-2
NAVFAC P-8-625-34
TM 06858B/06859D-34
Figure 4-2.
Thermal Watt Converter Test Circuit Schematic
frequency meter being tested varies more than 0.25
(e) Adjust
all
auto
transformers
to
the
minimum position.
p e r c e n t from that of the test frequency meter,
replace both transducer and frequency meter being
tested.
(f) Close switch S1 and open switches
S2 and S3.
( 8 ) Refer to the Operator and Organization-
al Maintenance Manual and install frequency meter
(g) Energize power source G-1 and ad-
and transducer.
j u s t auto transformer Tl until 1 ampere is indi-
cated on ammeter Al.
Kilowatt Meter and Thermal Converter.
b.
( h ) Check indication of voltmeter V1.
Indication shall be 6.660.04 millivolts.
( 1 ) Refer to the Operator and Organizational
Maintenance Manual and remove, clean, and inspect
( i ) Close switch S2 and adjust auto
k i l o w a t t meter and thermal converter.
transformer T2 until 1 ampere is indicated on am-
meter A2.
( 2 ) Test ac kilowatt meter and converter as
follows :
( j ) Check indication of voltmeter.
I n d i c a t i o n shall be 13.33 +0.07 millivolts.
( a ) Connect a calibrated kilowatt meter
a n d a suitable variable load to the generator set
( k ) Close switch S3 and adjust auto
l o a d terminal board.
transformer T3 until 1 ampere is indicated on am-
meter A3.
( b ) Refer to the Operator and Organiza-
tional Maintenance Manual and start the generator
( 1 ) Again check voltmeter indication.
set.
Indication shall be 20.000.1 millivolts.
(c) Vary the load while comparing the
(m) Replace thermal watt converter if
g e n e r a t o r set kilowatt meter reading to that of
the calibrated kilowatt meter.
it fails to perform as indicated.
( n ) If thermal watt converter performs
( d ) If readings vary more than 1.33 per-
cent, install thermal watt converter in a test set-
as indicated, replace meter.
up using figure 4-2 as a guide.
4-2
