METREL A 1322, Instruction Manual

Page: 16 / 38

A 1322 / A 1422 Measurements
16
5.1.1 Compensation of test leads resistance
Test leads compensation enables to eliminate the influence of test leads resistance and
instrument's internal resistance.
Compensation of test leads resistance procedure:
Item
Comment

Prepare test system. See chapter 4.3 Working with
the adapter.

Connect test lead to P/S terminal on the
master instrument. See Figure 5.1 .

Connect test lead probe to the PE pin of the
test socket (32A 5p, 16A 5p or 16A 3p). See Figure 5.1 .

Select Continuity function from the Single test
menu of the Master instrument.

Select test current (200 mA, 4 A, 10 A or 25 A). Regarding the type of cord.

Start test leads compensation procedure. Refer to master instrument
Instruction manual for details.
5.2 Insulation resistance (Riso, Riso-S) and Substitute leakage
current (Isub, Isub-S) measurements

Refer to master instrument Instruction manual, chapter Single test
measurements , subchapters Insulation resistance and Sub-leakage current for
detailed information.
Procedure:
Item Comment

Prepare test system. See chapter 4.3 Working
with the adapter.

Connect power supply plug of tested appliance into
proper test socket (Riso, Isub, Class I appliance) or See Figure 5.2.

Connect power supply plug of tested appliance into
proper test socket.

Connect P/S probe to accessible isolated
conductive part of the appliance. (Riso-S, Isub-S,
Class I or Class II appliance).
See Figure 5.2.

Prepare and start measurement on the master
instrument.

Wait until measurement is finished or stop the
measurement.

Check result(s).

Store result(s). Optional