13
RMO60TD Getting Started
The display shows test current (here
498 mA
) and the effective value of the measured resistance (here
567,2
mΩ on channel 1
and
567,3
mΩ on channel 2
). The time remained until the end of test procedure is
also shown on the display (here
119 min and 49 sec
).
It is also shown deviation of resistance ∆R.
Test could be completed in two ways:
-
Pushing the
STOP
button,
-
Automatically after the selected time has expired.
When the test is finished either because selected time has expired or the
STOP
button is pressed,
the RMO60TD switches to the
Results
menu and starts current discharging process. During
current discharging, the discharging LED lights and the alarm beep.
Discharge is completed when LED discharge and the buzzer are OFF. Also, during that period
“Discharging” message is shown on the display. During discharging process it is not possible to
start another measurement.
Once the test is completed the last measured result will remain registered at a selected memory location
(000-499 memory locations).
Discharge Current
The voltage at the RMO60TD output generation is immediately stopped, but current still flows, because
of the inductivity of test objects.
Because of the enormous amount of energy that can be stored in a magnetic field, precautions should
be taken before disconnecting the test leads from the transformer that is under test. Never remove the
leads during the testing process and always allow enough time for the transformer being tested to
completely discharge. Large transformers can require several minutes to discharge.
C A U T I O N
DO NOT DISCONNECT LEADS BEFORE “DISCHARGING” MESSAGE IS DISAPPEARED
FROM THE DISPLAY AND THE DISCHARGING DIODE IS OFF.
Figure 6-6:
The
Current
menu during
the test
Figure 6-7:
The
Results
menu
showing the test results
Memory
Figure 6-8:
Discharging message
