TM 5-6115-465-34
TO 35C2-S-446-2
NAVFAC P-8-625-34
TM 06858B/06859D-34
Transformer assemblies, Removal and Installation
Figure 5-9.
(4) Test instrumentation transformer as
b. = Cleaning, Inspection, and Testing.
follows:
(1) Clean transformer assemblies with a
(a) Using an ohmmeter, check resistance
clean, - lint-free cloth moistened with an approved
between terminal Al and A2, B1 and B2, Cl and
solvent and dry thoroughly.
C2 (figure 5-10b). Resistance shall be O. 11 ohm in
each case.
(2) Inspect transformer assemblies for
(b) Apply 10V-60 Hz to secondary winding.
cracks, corroded terminals, and evidence of short-
Exaltation current shall be 0.050 amp (maximum).
ing.
(5) Test cross-current compensation trans-
(3) Test current boost transformer as follows:
former as follows:
(a) Using a ohmmeter, check resistance
(a) Using an ohmmeter, check resistance
between terminals. Resistance shall be 0.3 ohm.
between terminals Al and A2, B1 and B2, and Cl and
C2, figure 5-10. Resistance shall be O. 19 ohm in
(b) Apply 10V-60 Hz to secondary winding.
each case.
Excitation current shall be 0.050 amp (maximum).
(6) Replace defective or damaged transformers.
(b) Apply 7V-60 Hz to secondary winding.
Excitation current shall be 0.075 amp (maximum).
c. Installation. Install transformer assemblies
in reverse order of removal procedures.
5-15
