Measuring Voltages - Marathon Electric MAGNAMAX Installation, Operation And Maintenance Manual

MEASURING VOLTAGES

When testing the generator and regulator,
the most frequent (and usually easiest)
measurement will be a voltage. The
generator will need to be running at rated
speed and may have some of the protective
guards and covers removed. BE CAREFUL.
Keep yourself and your test leads out of the
way. It is best to shut the unit down when
connecting meters. When using alligator
clips or push on terminals, be sure the leads
re supported so vibration does not shake
them loose when running the generator set.
See figure 8-1 for measurement points and
Figure 8-1
expected meter range settings.
When in doubt, start with a higher range and
work down.
Consult meter instruction manual to verify
its operation and limitations.
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