HT instruments MACROTEST G3 - Manual (Page 6)

MACROTESTG3 - COMBIG3
EN - 5
2. GENERAL DESCRIPTION
2.1. FOREWORD
If used according to the instructions given in this manual, the instrument you have just
purchased will guarantee accurate and reliable measures. This manual refers to
MACROTESTG3 and COMBIG3 models. The characteristics of the models are listed in
the following Table 1: In the whole manual, the word “instrument” generically indicates
MACROTESTG3 model, unless otherwise indicated.
Icon Acronym Measurement description MACROTESTG3 COMBIG3
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
 
RCD
Tests on molded case RCD (STD) and without
integral current breaking device RCD (
)
General and Selective of type AC ( ), A
( ) and B ( ) of the following parameters:
 Tripping time
 Tripping current
 Contact voltage
 
LOOP
Measurement of overall earth resistance in
sockets with no residual current protection
tripping (Ra
) and measurement of line
impedance and of fault loop (Loop P-N, P-P, P-
PE) with calculation of the assumed short-
circuit current (Ipsc) in Standard or IMP57
mode (with high resolution by means of optional
accessory IMP57)
 
EARTH
Measurement of earth impedance and ground
resistivity by voltammetric method and
measurement by using optional clamp T2100
 Optional
SEQ
Detection of phase rotation in a generic three-
phase system with 2- or 1-terminal measuring
method
 
AUX
Measurement of environmental parameters
(Temperature, Humidity, Illuminance) by using
optional probes
 
LEAKAGE
Real-time measurement of leakage current by
using optional clamp HT96U
 
ΔV%
Measurement of percentage voltage drop on
mains lines
 
Table 1: Characteristics of models