display graph to identify the hardware being used to conduct the test.
4. With the test leads properly connected to the asset, press the appropriate LEAD select button on the right side of
the screen to choose which lead will be tested. Manual mode Surge tests only one lead at a time.
Executing a Surge Test
1. Press the Push to Test (PTT) button (top left of ADX front panel) then turn the Voltage Output Ramp switch on the
ADX front panel clockwise to increase the voltage to the target level. If you overshoot the target level, turn the
Voltage Output Ramp switch counter-clockwise.
2. Release the Voltage Output Ramp switch when you have reached your target voltage, but continue pressing the PTT
button.
3. The ADX will apply the test voltage to the selected lead(s) in turn. The LEADS ENERGIZED indicator (above the LEAD
buttons) flashes to alert you that voltage is being applied. LEDs on the ADX front panel also light in turn to show
which lead is energized.
4. With the target level set, monitor the Pulse Count until you reach the desired number of pulses then release the PTT
button to complete the test for the selected lead. Repeat the process to test the other leads.
5. The voltage field (
V
at top left) displays the voltage level being applied as you turn the ADX Voltage Output Ramp
switch clockwise. Setting the Voltage Ramp Rate in the active test configuration to a slower rate can reduce
overcurrent or overvoltage conditions.
NOTE: The voltage in the upper left will always display the last voltage measured. The recorded test
voltage will be the last voltage unless there is a failure in which case it will record the voltage immediately
prior to the fault.
6. Pulse-to-pulse EAR
+
measurements are presented on the smaller graph on the bottom-left, while Line-to-Line EAR
+
percentages are displayed in their respective fields to the right of the PPEAR
+
graph.
Fig 87:
Manual Surge Test in progress.
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Megger Baker ADX User Guide
91
Manual Tests
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