EMM-µD3h EMM-µD3h-p EMM-µD3h-485 instruction manual
IM380-U v3.1
pag. 11 / 12
VISUALISATION PEAK VALUES (MAXIMUM) INSTANTANEUS AND AVERAGE.
By pressing the
A
and
B
keys simultaneously the instrument reaches the visualisation of the peak value (maximum): the
visualised measures selectable by
B
key, they will start flashing alternatively with the indication of the type of the maximum
value.
The maximum memorised values are of two types: the maximum instantaneous values, memorise the maximum reached
value of the measured parameter, during at least 1 second, the indicated value will flash alternatively with the message
(peak); the average values memorise the average value reached, during the last
, of the measured
parameter, the value will flash alternatively with the message
(
AVeraGe
)
.
The integration for the calculation of the values is synchronised at every switch on of the instrument
The maximum values, which may be selected with the
B
key are the following:
THREE-PHASE SYSTEM
parameter
Identification symbol
Value type
phase voltage
V
L1-N max
V
L2-N max
V
L3-N max
phase current
I
L1 max
I
L2 max
I
L3 max
average phase current (maximum demand)
I
L1 max (avg)
I
L2 max (avg)
I
L3 max (avg)
three phase system powers
W
max
VAr
max
VA
max
average three-phase system powers (maximum demand)
W
max (avg)
VAr
max (avg)
VA
max (avg)
three phase system average powers
W
(avg)
VAr
(avg)
VA
(avg)
SINGLE PHASE SYSTEM
Parameter
Identification symbol
Value type
maximum phase voltage
V
L1-N max
maximum phase current
I
L1 max
maximum phase powers
W
max
VAr
max
VA
max
average phase current (maximum demand)
I
L1 max (avg)
average phase powers (maxiimum demand)
W
max (avg)
VAr
max (avg)
VA
max (avg)
average phase powers
W
(avg)
VAr
(avg)
VA
(avg)
NOTE relative to measures.
The refresh time of the displays is below 1 second, with a comfortable reading of the measures, even in presence of sudden variations
of the measured parameters.
In case that the indicated measures aren’t reliable or they are absurd, it’s important to check carefully the current and voltage inputs
connection, so as the phase sequence. Check that current and voltage correspond to the same phase (on input L1 it will be con nected
phase voltage L1 and the CT will be placed on phase L1), thence terminal S1 of CT will be wired to the relative terminal S1 on the
instrument.
