KYORITSU 6201 - Manual (Page 16)

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6. Measuring method
6.1 Earthed appliance Test
The purpose of the test carried out for Class 1 appliances is to check the
insulation resistance between accessible conductive parts and connection of
protective earth and between live wire parts and accessible conductive parts
is within the range defined in the standards.
To conduct the tests of protective conductor resistance and insulation
resistance for DUT, connect the mains plug of DUT to the test socket (1)
described in clause
3.4 INSTRUMENTS LAYOUT and PE probe
terminal (5).
Use the following setups, depending upon the type of DUT.
(1) Power on the DUT
(2) Connect the mains plug of Safety class 1 DUT to test socket on the
instrument.
Fig.12