Instruction manual

129
The output will go to 180 volts for 50 msec and will drop gradually to 125 volts in
450 msec. The output voltage will remain at 125 volts for 9.5 seconds before it
drops to 115 volts. After 5 seconds, a range change will take place to the original
setup. This is a simultaneous test to all selected phases.
2. Abnormal undervoltage test (Figure 11, page 136).
MIL704D[A][B][C] :ABNormal :VOLTage :UNDer
The output voltage will drop to 0 volts for 7 seconds. It step up to 100 volts for 3
seconds before it will go to 115 volts. This is a simultaneous test for all selected
phases.
3. Abnormal voltage test
MIL704D[A][B][C] :ABNormal :VOLTage
This test will combine Abnormal overvoltage and Abnormal undervoltage. There
will be a pause of 5 seconds between tests. If the voltage range is below 180 volts
the Abnormal overvoltage test will not take place.
4. Abnormal overfrequency test (Figure 12, page 137)
MIL704D :ABNormal :FREQuency :OVER
This test will step up the frequency from 400 Hz to 480 Hz. The frequency will
step down to 400 Hz in the following sequence:
480 Hz for 5 seconds
425 Hz for 5 seconds
5. Abnormal underfrequency test (Figure 13, page 137)
MIL704D :ABNormal :FREQuency :UNDer
This test will step down the frequency from 400 Hz to 0 Hz. The frequency will
step up to 400 Hz in the following sequence:
0 Hz for 5 seconds
375 Hz for 5 seconds