User Manual – Rev BE AMETEK Programmable Power
MX Series 303
9.6.1.7.4 ABNORMAL TEST
From the MIL704 main menu (Figure 9-33) scroll to the ABNORMAL AC entry
using the up and down cursor keys. Press the ENTER key to select the
ABNORMAL screens. The screen will appear as shown in Figure 9-37.
Figure 9-37: Abnormal Screen
The ABNORMAL AC TEST screen has the following tests:
• OVER VOLTAGE
• UNDER VOLTAGE
• OVER FREQUENCY
• UNDER FREQUENCY
The above test can be selected by scrolling to the highlighted selection using the
up and down key and the ENTER key to start the selected test.
OVER VOLTAGE
This test will change the output voltage for the selected phase in the following
sequence:
• 180V for 50msec.
• The voltage gradually decays with time to 125 volt by the
following equation:
= 124.6 +
2.77
Where: 0.05 ≤ ≤ 6.925
• Stay at 125V for 93 seconds before returning to 115V.
Prior to the test, a range change may take place if the power source is set at
the low voltage range.
The ← key (backspace) will terminate the test at any time.
NOTE: A range change will result in momentary loss of power to the EUT.
If this is not acceptable, the power source must be always left
in high range.
UNDER VOLTAGE
This test will change the output voltage for the selected phase in the following
sequence:
• 0V for 7 seconds.
• 100V for 93 seconds.
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