Figure 2.
High voltage compartment.
a. 40/60-ampere AC generator (fig 3). The testing principles of the 40/60-
ampere AC charging system were covered in lessons 1 and 2. Tests included were
with and without the internal regulator. These required special test circuits to
connect externally to the generator. The circuit components consisted of measuring
meters, resistors, switches, and batteries. Once these components were connected
in the configuration required for the particular test, then an external motor or
engine was connected to operate the generator at the various speeds of rotation
(RPM) to perform the test. As you learned in lesson 3, the 500-ampere test stand
has these components for the external test circuits and a motor system, which turns
the generator to the required speeds, all enclosed in a single unit. Thus, all
that is further required is the installation of the generator on the stand for the
tests.
b. 100-ampere generator (alternator). Even though the 100-ampere generator
(fig 4) has not been discussed in detail, it functions basically in the same manner
as the 40/60 system. The differences between them are as follows.
(1) The 40/60-ampere system has an AC generator, rectifier, and
regulator all contained in a single unit.
(2) The 100-ampere system consists of three individual components which
are connected together by electrical cables. These individual components are the
AC generator, separate rectifier component, and separate regulator component.
OS 010, 4-P5
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