Gx
Series
EN - 18
6.2. M
: MEASUREMENT OF INSULATION RESISTANCE
This function is performed in compliance with standards IEC/EN61557-2, BS7671 17th
edition, AS/NZS 3000, AS/NZS 3017 and allows measuring the insulation resistance
between the active conductors and between each active conductor and the earth.
CAUTION
The instrument can be used for measurements on installations with overvoltage
category CAT IV 300V to earth and max 415V between inputs.
We recommend holding the alligator clip respecting the safety area created by
the hand protection (see § 4.2).
Check that the circuit being tested is not live and that all possible loads normally
connected to it are disconnected before carrying out insulation measurement.
The following operating modes are available:
AUTO L-PE
The test is performed between L-PE conductors and activated by the
GO/STOP
key of the instrument (or
START
of the remote lead) and
lasts 2 seconds
AUTO L/N-PE
The test is performed between L-PE and N-PE conductors and
activated by the
GO/STOP
key of the instrument (or
START
of the
remote lead) and lasts 2 seconds. Recommended mode
Timing test between L-PE conductors
The operator may set a
sufficiently long measuring time (
5s
999s
) to be able to move the test
lead on the conductors being tested, while the instrument is carrying out
the test. For the whole measurement duration, the instrument will give
out a short sound every second. While measuring, if the insulation
resistance reaches a lower value than the set limit, the instrument will
give a continuous acoustic signal. To stop the test, press again the
GO/STOP
key on the instrument or the
START
key on the remote lead.
Fig. 8: Insulation test between L-PE by means of single cables and remote lead
