Quick Test microPAT, User Manual

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6
Tests
The microPAT carries out three different types of test. The actual tests
carried out depend on the equipment connected to the tester.
Earth Continuity
The earth continuity test measures the electrical resistance from the earth
pin of the mains plug to an earthed point on the appliance. This has to
have a very low electrical resistance to provide safe earth protection.
Insulation Resistance
The insulation resistance applies a high voltage ( 500V ) to the live and
neutral connections. This is then used to measure the electrical resistance
of the appliance to earth, or any exposed metal part.
This resistance has to be very high to protect the user.
Insulation Resistance - Surge Protected Extension Leads
The microPAT features an option to perform this test at 250V, this avoids
false fail indications when testing surge suppressed extension leads.
Polarity
This is used for extension leads and IEC leads. It checks that there is
correct connection between the live and neutral conductors through the
lead.
Test Table
Test Selected Earth Continuity
Insulation
Resistance
Polarity
Class 1 Y 500V N
Class 2 N 500V N
Cable Y 500V Y
Cable Surge Y 250V Y