Figure 9-14: Abnormal Screens - Ametek California Instruments MX15 Series User Manual

This test will change the output voltage in the following sequence:
104V for 1 minute.
•
• 122V for 1 minute.
115V for 1 minute.
•
The ← key (backspace) will terminate the test at any time.
FREQUENCY
This test will change the output frequency in the following sequence:
360Hz for 1 minute.
•
440Hz for 1 minute.
•
400Hz for 1 minute.
•
The ← key (backspace) will terminate the test at any time.
9.4.7.1 ABNORMAL TEST
From the MIL704 main menu (Figure 9-11) 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 9-14.
The ABNORMAL SCREEN has the following tests:
1. OVER VOLTAGE
2. UNDER VOLTAGE
3. OVER FREQUENCY
4. 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:
For 400Hz and VFREQ:
180V for 50msec.
•
• The voltage gradually decays with time to 125 volt by the following equation:
V = 124.6 + 2.77/t. For 0.05 ≤ t ≤ 6.925
Stay at 125V for 93 seconds before returning to 115V.
•
For 60Hz only:
180V for 3.34msec
•
MX15

Figure 9-14: Abnormal Screens

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