HT instruments MACROTEST G3 - Manual (Page 7)

MACROTESTG3 - COMBIG3
EN - 6
2.2. INSTRUMENT FUNCTIONS
The instrument is equipped with a TFT color LCD display, with capacitive "touch-screen"
that can be handled simply with the touch of a finger by the user and is structured with an
icon-based menu allowing the direct selection of measurement functions for quick and
intuitive use.
The instrument can perform the following tests (compatibly with the characteristics
described in Table 1):
RPE Continuity test of earth, protective and equipotential conductors with test
current higher than 200mA and open-circuit voltage between 4V and 24V
M  Measurement of insulation resistance with continuous test voltage of 50V,
100V, 250V, 500V or 1000V DC
RCD Test on molded case RCD (Standard – STD) and on earth leakage relay
RCD (
) General (G), Selective (S) and Delayed ( ) of type A ( )
and AC ( ) and B ( ) of the following parameters: tripping time,
tripping current, contact voltage
LOOP Measurement of line impedance/Loop P-N, P-P, P-E with calculation of
the assumed short-circuit current, also with high resolution (0.1m
) (by
means of optional accessory IMP57), overall earth resistance without
causing the RCD tripping, check of the interruption capacity of
magnetothermal protections (MCB) and fuses, I2t test, protection check
in case of indirect contacts
EARTH Measurement of earth impedance and ground resistivity by
voltammetric method and by an external clamp connected to the
instrument (optional accessory T2100) (MACROTESTG3 or COMBIG3
enabled)
SEQ Indication of phase sequence with 2- or 1-terminal method
AUX Measurement of environmental parameters (illuminance, air temperature,
humidity) by means of optional external probes and DC voltage signals
LEAKAGE Measurement of leakage current (by means of the optional accessory
HT96U)
ΔV% Measurement of percentage voltage drop on main lines