Gx
Series
EN - 13
6. OPERATING INSTRUCTIONS
6.1. RPE:
CONTINUITY
OF PROTECTIVE CONDUCTORS
This function is performed in compliance with standards IEC/EN61557-4, BS7671 17th
edition, AS/NZS 3000, AS/NZS 3017 and allows measuring the resistance of protective
and equipotential conductors.
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 no voltage is present at the ends of the item to be tested before
carrying out a continuity test.
The results may be influenced by the presence of auxiliary circuits connected in
parallel with the item to be tested or by transient currents.
The following operating modes are available:
Compensation of the resistance of the cables used for measurement. The
instrument automatically subtracts the value of cable resistance from the
measured resistance value. Therefore, it is necessary that this value is
measured each time the measuring cables are changed or extended.
AUTO
The instrument carries out two measurements with inverted polarity and
displays their average value. Recommended mode
The instrument performs a continuity test between two points like a common
multimeter without the possibility to save the test result
The instrument carries out the measurement with the possibility of setting a
duration time for testing. The operator may set a sufficiently long measuring
time (between
1s
and
15s
) to be able to move the protective conductors while
the instrument is carrying out the test, in order to find out a possible bad
connection.
CAUTION
Continuity test is carried out by supplying a current higher than 200mA
in case the resistance does not exceed ca. 2
(including resistance of
the test cables). For higher resistance values, the instrument carries out
the test with a current lower than 200mA.
Fig. 6: Continuity test by means of single cables and remote lead