Megger DET2/2, User Manual

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For earth electrode testing and for earth resistivity
surveying, the instrument’s test leads are connected to
spikes inserted in the ground. The way the connections
are made depends on the type of test being undertaken
and details are given in ‘ Measuring Techniques’.
Test spikes and long test leads are necessary for all
types of earth testing and the optional earth testing field
accessory kits contain the basic equipment. See
‘Accessories’.
1. Insert the Current test spike into the ground 30 to
50 metres away from the Earth electrode to to be
tested.
2. Connect this spike to the instrument terminal 'C2'
(‘H’).
3. Insert the Potential test spike into the ground
midway between the Current test spike and the
Earth electrode, and in direct line with them both.
4. Connect this spike to the instrument terminal 'P2'
(‘S’).
5. When running the test leads out to each remote
electrode, avoid laying the wires too close to each
other.
Setting up the Test spikes
8