EASYTEST-COMBI519
EN - 32
6.5. M: MEASUREMENT OF INSULATION RESISTANCE
This function is performed in compliance with standards IEC/EN61557-2, BS7671
17th/18th edition and allows measuring the insulation resistance between the active
conductors and between each active conductor and the earth. The following operating
modes are available:
MAN the test can be carried out between the L-N, L-PE or N-PE conductors and has
a fixed duration of 3s when the GO/STOP key is pressed on the instrument (or
START on the remote switch probe). Recommended mode
TMR the test is carried out between the L-PE conductors and has a programmable
duration in the range 3s ÷ 999s in steps of 1s by pressing the GO/STOP key on
the instrument (or START of the remote switch probe). It is possible to perform
DAR (Dielectric Absorbtion Ratio) duration test for test time >60s and PI
(Polarization Index) for test time> 600s (10min) (see § 12.2.1 and § 12.2.2)
AUTO the instrument performs an automatic sequence test between the L-N, L-PE and
N-PE conductors when the GO/STOP key is pressed on the instrument (or
START of the remote switch probe).
Fig. 11: Insulation test between L-N-PE by means of single cables (MAN and AUTO modes)
Fig. 12: Insulation between L-N-PE with single cables and remote switch probe (MAN and
AUTO)
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