TECHNICAL CHARACTERISTICS
MEASURES, ACCURACY
Voltage
True rms for the phase, phase to phase and three-phase voltage
Total measuring range: 20÷500V trms phase-phase - 290V rms phase-neutral, depending always to the
power supply voltage.
Visualization (0,02÷50,0kV) – measuring accuracy: ±0,5% ±1 digit
Current
True rms for the phase and three-phase currents.
Measuring range: 0,02÷5A trms - accuracy: ±0,5% ±1 digit
Visualization 0,02÷9990A
Frequency
Frequency of the phase L1 – measuring range: 45÷65Hz
accuracy: ±0,5% ±1 digit
AUXILIARY POWER SUPPLY -INPUTS
Aux. power supply
Standard 380-415V ±15% - options 100-125 / 220-240V ±15%
Frequency 45-65Hz - absorption 3VA
Voltage taken from the measuring voltage inputs
Voltage inputs
from 20 to 500V phase-phase (always depending on the auxiliary supply); permanent ov20% -
impedance at the input: 1 M
Ω
Three-phase wiring with 3 or 4 wires, and single-phase wiring
MV connection through external VT with programmable transformation ratio from 1 to 400
Current inputs
From 0,02 to 5A; permanent overload 30% - from external CT’s with secondary 5A
primary programmable from 5 to 10000A – self consumption <0,5VA
GENERAL
Display and keyboard
3 display with red LED of 10 mm each, made of 3 digits of 7 segments
2 keys for selection of measures and programming
Mechanical
Protection degree: IP52 frontal - IP20 enclosure and terminals - weight: approx. 0,5 kg.
Wiring through terminals for screws, cross section cable of 2,5 mm
2
Self-extinguishing plastic enclosure –
ELM-96: Flush mounting DIN 96x96mm, depth 56mm
Environment
Working temperature: -10÷60°C; relative humidity <90%
Storage temperature: -25÷70°C
Isolation test: 3 kV during 1 minute
Standards of reference
and Marking
CEI EN 50081-2; CEI EN 61000-6-2;
CEI EN 61010-1
ELM-96
instruction manual
IM425-U v3.1
pag. 15
