a. Excitation Test. Including a plot of volts as abscissa versus
amperes and watts as ordinates.
b. Impedance Test. Including a plot of volts as abscissa versus
amperes and watts as ordinates.
c. Performance Test. Including a plot of torque or percent load as
abscissa versus efficiency, power factor, amperes, watts, and RPM or
percent slip as ordinates.
d. Speed-Torque Test (Prony brake or other equivalent method).
Including a plot of torque in foot-pounds as abscissa versus speed in
RPM as ordinate.
e. Temperature Test. Made on completion of paragraph c above. (If
screens are provided over openings, test will be made with screens
removed and by thermometer).
f. Insulation Resistance-Temperature Test. Shall be taken following
heat run, readings being taken at approximately 10 degrees C intervals.
Temperature shall be determined by the resistance method. Test result
values shall be plotted on semilogarithmic graphs, the insulation
resistance values as logarithmic ordinates and the temperature values
as uniform abscissas. For comparison purposes, a curve indicating the
safe operating value of insulation resistance shall be plotted on the
same sheet with the insulation resistance-temperature test curve.
g.
Cold and Hot Resistance Measurement.
h.
Dielectric Test.
i.
Sound Level Test.
In accordance with [_____].
j. Vibration Measurement.
In accordance with NEMA MG 1 paragraph
20.54.
k.
Conformance Tests.
In accordance with NEMA MG 1 paragraph 20.47.
2.5.2
Check Test
A check test of a motor shall include the following:
a. Routine test per NEMA MG 1 paragraph 12.51 or NEMA MG 1 paragraph
20.47.
b.
Cold resistance measurement.
c. Insulation resistance and winding temperature at time the
insulation resistance was measured.
d.
Conformance Test.
In accordance with NEMA MG 1 paragraph 20.47.
e. Vibration measurement in accordance with NEMA MG 1 paragraph 12.07
or NEMA MG 1 paragraph 20.54.
2.5.3
Form Wound Coil Test
All form wound coils, either before or after they are placed in the slots,
SECTION 16221A
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