P-9-TM-457-35
T.O. 35C2-3-442-2
TM-07464A-35 TM 5-6115-457-34
6-72. REASSEMBLY, Refer to figure 6-14
b. Install connector (4) with keyway up.
and reassemble 400 hertz electronic com-
ponent assembly in the reverse order of
6-73. INSTALLATION. Install the 400
index numbers assigned. Pay particular
hertz convenience receptacle assembly in
attention to the following:
the rear housing and secure in position with
six screws and lock washers. Connect plug
P48 to connector J48 in the rear of the
a. Connect wires in accordance with
assembly.
Section V. EXCITER-REGULATOR
rectified and then fed to the coils of the
6-74.
GENERAL.
generator rotor, the fields of which induce
the output currents in the coils of the gen-
a. The exciter All, (figures 1-11 and
erator stator. Brushes or slip rings are
1-13) and voltage regulator A 10 operate as
not required. The disposition of the rotors
integral components of the excitation sys-
and stators of both the dynamic exciter and
tem. The excitation system energizes the
main rotor field coils of the generator and
the generator including the rectifier ring
regulates the magnitude of the magnetic
are shown in figure 7-1.
field thus produced so as to maintain a con-
c. The exciter-regulator circuitry is
stant voltage output from the stator of the
illustrated in figures 1-10 and 1-12. The
generator under all rated load conditions.
assembly operates as follows:
b. The excitation system is comprised
1. The regulated exciter field volt-
of a dynamic exciter, a static exciter as-
age at pins S-R of connector J13 is obtained
sembly, a voltage regulator assembly,
by means of saturable core transformer
current transformers and a cross current
compensation network to permit parallel
T 1. The inductance of this transformer
can be varied with the control winding 5-7
operation of two or more generator sets.
so that the voltage ratio between the wind-
1. The static exciter and voltage
ings 1-2 and 3-4 may be increased or de-
creased in proportion to the direct current
regulator are electronic assemblies pack-
flowing in the winding 5-7, When the mag-
aged in a single enclosure and mounted out-
nitude of the control current increases the
side the generator housing.
inductance decreases and there is a lowered
magnetic coupling between the windings
2. The dynamic exciter consists of
which carry the alternating currents, hence
a field coil stator integral with the genera-
tor housing, a set of rotor coils and solid
a lowered voltage output. The reverse
occurs when the control current is de-
state rectifiers mounted on the generator
creased.
shaft. The static exciter energizes the
field coils of the dynamic exciter. The
2. The input at J-K of connector
resultant field couples with the rotor coils
J13 derives from current transformers
of the exciter. The induced currents are
Change 1
6-39
