Configure Surge test
1) Click on the test configuration button to the right of the
Surge
button to open the
Surge Test
setup window.
2) Configure the Surge test as shown. Set the
Surge Voltage
to 2000 volts, which is
approximately 2
X
V + 1000.
3) Set
VRamp Rate
to a typical 25 volts. If the test should run faster, increase this
number to 50 or 100 volts.
4) For this example, we set the
Surge Pulses
number to 5, which means that five
pulses will be applied to the windings after the analyzer reaches its maximum test
voltage of 2000 volts.
5) Set the
Volts/Div
and the
µSeconds/Div
to Auto. The analyzer will automatically
scale the waveform to fit the graph.
Figure 91.
Surge test parameters.
6)
L-L EAR (%)
(Line-to-Line EAR) is turned off because this motor will be tested with
the rotor installed. If this option is selected, a nuisance trip could occur because the
rotor coupling is different for each phase winding unless the pass/fail value is set to a
high number such as 50 percent.
7) The
P-P EAR (%)
(Pulse-to-Pulse EAR) is set to 10 percent. This means that a
pulse-to-pulse EAR value greater than 10 percent will cause the analyzer to stop
testing and the motor will fail the test. This number can be reduced provided the
voltage ramp rate is also reduced.
8) The
Zero Crossing
option is not used in this example. When used, the percentage
set for the option is the threshold at which the test will fail if the waveform shifts to
the left and crosses the zero reference line outside the defined threshold.
PUB CM/I4 71-015 EN V13.2 Static Motor Analyzer—Baker AWA-IV User Manual
89
Test procedures
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