14
PM5A2
7. How to Perform Tests
After having set the desired measurement, press
key. The
HIGH VOLTAGE
indicator will turn on
indicating that the insulation tester is applying high
voltage to the element under test.
Then, the intelligent auto-range system will search for the most convenient range for the value under measure. At
this moment the display
will show the message “
WAIT...
”.
As soon as the unit selects the appropriate range, the display will show the number of test, the selected voltage
value, displaying the value of the applied voltage and the leakage current. The unit records date and time, starts
counting the elapsed time and the resistance value indication will be displayed with its corresponding unit, and the
analog indication will start by bargraph.In order to end the test, press the
key. At that moment, the last
measured values will remain frozen in the PM5A2 display. By pressing the
key again, the equipment will return
to the voltmeter function.
Example:
The display exhibits the test number (12), the measured resistance value (602
GΩ
, the voltage selected of 2500
V, the elapsed time (6:25 minutes), the applied voltage (2.51 kV), the leakage current (4.17nA), and date and time.
NOTE:
If the resistance measured is greater than 5
TΩ
@ 5 kV, the following message will be
exhibited:
R >
5TΩ
WARNING:
Never connect or disconnect the test leads with the equipment under operation or while the High
Voltage LED is on. If there is a need to modify the connections, this should be done with the equipment
disconnected and with discharged potentials (High Voltage LED off)
