COMBI521
EN - 6
2. GENERAL DESCRIPTION
2.1. INSTRUMENT FUNCTIONS
The instrument can perform the following tests:
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.
LOOP
Measurement of line/fault loop impedance P-N, P-P, P-E with
calculation of the prospective short-circuit current, overall earth
resistance without causing the RCD’s tripping (RA ), check of the
breaking capacity of magnetothermal protections (MCB) and fuses,
protection check in case of indirect contacts with 2-wire and 3-wire
connection
LoZ
Measurement of line impedance/Loop P-N, P-P, P-E with calculation of
the prospective short-circuit current with high resolution (0.1m
) (by
means of optional accessory IMP57)
Δ
V%
Measurement
of percentage voltage drop on mains.
Lo
Continuity test of earth, protective and equipotential conductors with
test current higher than 10A (by means of optional accessory
EQUITEST)
RCD
Test on molded-case standard, General and Selective RCDs of type A
(
) and AC (
) and B ( ) of the following parameters: tripping time,
tripping current, contact voltage.
AUTO
Automatic sequence measurements of RA , RCD, M
functions with 3-
wire connection.
1,2,3
Indication of phase sequence with 1-terminal method.
DMM
Multimeter function for Phase-Neutral, Phase-Phase, Phase-PE voltage
and frequency measurements.
AUX
Measurement of environmental parameters (illuminance with white light
source and LED source, air temperature, humidity) by means of
optional external probes and DC voltage signals
PQA
Real time measurement of main parameters (powers, harmonics, power
factor/cos
) in Single phase systems
LEAK
Measurement of leakage current (by means of the optional accessory
HT96U)
EVSE
Automatic sequence of safety tests on mode 2 and 3 electric car
charging stations
(by means of optional accessory
EV-TEST100
)
