Caution – HT instruments MACROTEST G3 User Manual
Page 21
MACROTESTG3 - COMBIG3
EN - 20
6.3.
RCD: TEST ON DIFFERENTIAL SWITCHES
This function is performed in compliance with standard IEC/EN61557-6 and allows
measuring the tripping time and current of molded case differential switches of type A (
),
AC (
) and B (
), being General (G), Selective (S) and Delayed ( ). The instrument
allows performing tests on earth leakage relay RCDs with currents up to 10A (with optional
accessory RCDX10)
CAUTION
Some combinations of test parameters can be not available in compliance with
the technical specification of the instrument and the RCD tables (see § 10.1 –
the empty cells of RCD tables means not available situations)
The following operating connections are available to perforn the RCD test:
CAUTION
Testing the RCD tripping time causes its tripping. Therefore, check that there
are NO users or loads connected downstream of the differential switch
being tested which could be damaged by a system downtime.
Disconnect all loads connected downstream of the differential switch as they
could produce leakage currents further to those produced by the instrument,
thus invalidating the results of the test.
Fig. 10: Connection for single-phase 230V system by means of shuko plug
Fig. 11: Connection for single-phase 230V system with single cables and remote lead