Operation; General Testing Procedure; Test Condition Adjustments - Megger DET2/2 Guia Del Usuario

Operation

General Testing Procedure

It is advisable that the battery of the DET2/2 is fully
charged before embarking on a test sequence. It can
be extremely inconvenient if the battery becomes too
low while a field test is in progress.
1. Firmly connect the instrument terminals to the
respective earth electrode and test spikes. See
'Setting up the Test spikes' and 'Measuring
Techniques'.
2. Press and hold the On/Off push button, or rotate it to
the Lock position.
3. If required, carry out a Pspike test to check
continuity of the the Potential circuit.
4. The resistance value being measured is shown on
the sub display after a few moments, when the
"Please wait..." message has disappeared.

Test Condition Adjustments

If the sub display message states that a true
measurement cannot be obtained, the test conditions
can be altered to achieve optimum conditions for the
test. One or more of the following may be used:-
Test current Frequency
Using the right hand ▲ or ▼ keys, increase or decrease
the test current frequency range. See 'Initial
Configuration and Spike set up'.
Lo Current /Hi Current
Using the centre ▲ key, scroll through the left hand
options to select and highlight the 'Current' option.
Press the left hand ▲ key to toggle between 'Lo
Current' and 'Hi Current'. 'Hi Current' assists to
overcome problems caused by high current spike
resistance. Note: Current circuit resistance is
constantly monitored during a test. If too high, a
message to this effect is displayed.
Filter
Using the centre ▲ key, scroll through the left hand
options to select and highlight the 'Filter' option.
Press the left hand s key to toggle between 'Filter off'
and 'Filter on'. 'Filter on' assists to reduce 'noise'
affecting the reading. The time taken to make a
measurement increases significantly with 'Filter on'.
PSpike
Using the centre ▲ key, scroll through the left hand
options to select and highlight the 'Pspike' option.
Press the left hand ▲ key to automatically carry out a
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