EMM-R4h EMM-
μ
4h
instruction manual
IM441-U v0.7
pag. 16
TECHNICAL FEATURES
MEASURES, PRECISIONS
voltage
true RMS of the phase voltages and the phase to phase voltages and values of three phase system
range of total measure: 20÷500V trms phase-phase - 290V rms phase-neutral dependent by the auxiliary
power supply
visualization (0,02÷50,0kV) - measure precision: ±0,5% ±1 digit– management maximum values
current
true RMS of the phase currents and of the value of three phase system
range of measure: 0,02÷5A trms - measure precision: ±0,5% ±1 digit
visualization 0,02÷9990A – management average and maximum values
frequency
frequency of the L3 phase –range of measure: 45÷65Hz
precision: ±0,5% ±1 digit
powers
phase and three phase system reactive and active power
range of measure: 0,001÷9990kW - 0,001÷9990kVAr - 0,001÷9990kVA
precision: ±1% ±1 digit - management average and maximum value
power factor
phase and three phase power factor
range of measure: -0,1÷0,1 / precision: ±1% ±1 digit - management average and maximum value
energy measure
three phase system active, reactive and apparent energy
range of measure: 0÷99999999,9 kWh / kVArh
class 2 ( IEC 1036)
precision: ±1%
hours counter
precision: ±1%; resolution 1/10 of hour
AUXILIARY POWER SUPPLY, INPUTS
auxiliary power
supply
standard 380-415V ±15% - optional 100-125 / 220-240V ±15%
frequency 45-65Hz - consumption 3VA
voltage from the voltage measure input
voltage inputs
from 20 to 500V phase-phase (dependent from auxiliary power supply); permanent ov20% - input
impedance: 1 M
insertion on three phase line with 3 wires, 4 wires and single phase
insertion in MT with external TV and transforming rate programmable from 0.1 to 400.0
current inputs
from 0,02 to 5A; permanent overload 30% - from external TA with secondary 5A,
primary programmable from 5 to 10000A - auto-consumption <0,5VA
INPUTS / OUTPUTS
digital outputs
Two outputs with common, optomos 12÷230Vac/dc, max 150mA,
Insulation: 3kV for 60 second
Pulse Function:
Weight programmable 0,01-0,1-1-10 kWh/pulse
Pulse duration 100-200-300 400 500 milliseconds selectable
DO1: active energy pulse output
DO2: reactive energy pulse output
serial output
One optional output RS485, baud rate selectable, MODBUS-RTU protocol
Insulation: 3kV for 60 second
GENERALS
display, operators 4 displays with red LED 10mm everyone of 3 digit by 7 segments
3 push-button for selecting measure and programming
mechanic
protection degree: IP52 frontal - IP20 enclosure and terminals - weight: about 0,5 kg
connections with screw terminals for cable 2,5 mm
2
enclosure thermoplastic self-extinguishing
EMM-R4h: flush mounting DIN 96x96mm, depth 56mm
EMM-µ4h: flush mounting DIN 72x72mm, depth 95mm
environmental working
temperature: -10÷60°C; humidity <90%
storing temperature: -25÷70°C
insulation test: 3 kV for 1 minute
standards
CEI EN 50081-2; CEI EN 50082-1;
CEI EN 61010-1
NOTE
At reason of the evolution of standards and products, the company reserves to modify in every time the features of the product described in this
document, that it’s necessary to verify preventively.
The liability of the producer for damage caused by defect of the product ”can be reduced or deleted (…) when the damage is caused joint by a defect of
product or for blame of the damaged or a person of which the damaged is responsible” (Article 8, 85/374/CEE).