Megger PAT410 - Extension Lead Adaptor Nulling Procedure

www.megger.comPAT400 Series
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4) Press the TEST button. The PAT400 will display the value of the test lead as a Null SET value, and display the z symbol in the
top of the screen as below:
The displayed inside means an extension lead null is also set.
5) To remove the Bond Lead Null select the “Remove Lead Null” and press the TEST or OK button. The symbol will disappear.
3) Connect the Black bond lead between the Bond socket and the Zero post on the front panel as below:
3.4.2 Extension Lead Adaptor Resistance Null
Some tests require using an IEC lead or the short extension lead adaptor supplied with every PAT tester.
An example of this is testing a multiple sockets extension lead:
Extension lead
adaptor