Article Date: March 10th, 2005
Author: Daniel Huynen
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As we understand it, there are two ways of testing the insulation of class l and class ll equipment as stated in AS/NZS 3760:2003.
(A) With a leakage current test. (refer to AS/NZS 3760:2003 for values in relevant tables)
(B) Measure insulation resistance. (refer to AS/NZS 3760:2003 for values in relevant tables)
There is also a note in the Standard that states:
Insulation resistance tests shall be performed with the switch in the "on" position. If the equipment must be energized to close or operate a switching device, then a leakage current test shall be preformed.
The Cuthbert Stewart meter the "TNT" dose not perform the leakage current test.
The Cuthbert Stewart meter the "TNT EL" and the "TNT" + both perform the leakage current test.
Contact your local branch for more details.
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