Megger DET4 Series User Manual

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Figure 36: example resistance reading using two-clamp stakeless method
11. Under certain circumstances, the instrument may display a noise warning as shown:
This means that interference has been detected which may impair the accuracy of the measurement. In
particular, the reading could be lower than the actual resistance. The resistance of the electrode or system
must be verified by an alternative method.
Note:
 The instrument will display the warning triangle above 2 A – no “Stakeless” testing is possible under
this condition.
 The instrument will display the warning triangle and an over-range condition above 20 A – no
“Stakeless” testing is possible under this condition.
 Ensure that the VCLAMP and ICLAMP jaw mating surfaces are free of dust and contamination and that
they contact completely when the VCLAMP and ICLAMP are closed.
 Currents carried by conductors in close proximity to the VCLAMP and ICLAMP may affect calibration
and reduce the accuracy of measurements made.
 If the VCLAMP opens at any time after the TEST button is pressed, the test will be aborted.

Megger DET4 Series Specifications

General

Brand	Megger
Model	DET4 Series
Category	Test Equipment
Language	English