Test Instrument Solutions SafetyPAT, Руководство по эксплуатации

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been painted or a metal screw that only into plastic and not connected to an earth. In the case of an earth
path which has been painted try using the probe to penetrate the painted surface, then repeat the test. The
pass band on the SafetyPat is set up to include 0.5 of an ohm, a failure could be because you are testing an
appliance with a long lead, having a resistance greater than 0.5 of an ohm, this would be why the appliance/
extension lead has failed the earth test
Likewise if a reading was produced from testing an item with a very short lead, of 0.5 of an ohm, then this
should be investigated as the competent person doing the test must realise that the result would have been
less than 0.1 of an ohm ie a SOLID PASS
Having a FAIL on insulation with a class 1 appliance, where the pass band is set at 1Mohm usually indicates
the appliance has an insulation fault however depending on the appliance under test this sometimes can be
caused by a heating element in the appliance which is damp or dusty. Cleaning the appliance or connecting
it to the mains supply can soon burn off this damp or dust, then repeat the test