EMM-R3 VA
instruction manual
IM425-U v2.0
pag. 1
INSTRUCTION MANUAL
IM425-U v2.0
EMM-R3 VA
MULTIFUNCTION
VOLT/AMMETER
GENERAL
The digital Multifunction Volt/Ammeter series EMM-VA allow
monitoring the main electrical parameters present on a
distribution line. The local display of the electrical parameters
is being made through 3 display with red LED, which grant a
good and simultaneous reading of various measures. The
intuitive selection of the measures to visualise, which are
signalled by their corresponding LED, completes a clear and
simple front panel, which offer a lot of useful information.
On top of the instantaneous measuring, these instruments
visualise the maximum peak of the main parameters
(maximum peak and maximum demand or maximum average
value).
Multifunction Volt/Ammeter series EMM-VA replace, in an
unique device, all the functions of voltmeters, ammeters and
frequency meters, permitting a great economic saving, due to
reducing of dimension and wiring, so as optimising the
instruments management, since one has most of all in one,
for electrical boards, switch-boards and Gen-Sets.
AVAILABLE MODELS
Several models, with various optional functions and outputs are available, either for flush mounting on front panel and for
DIN rail mounting.
INTRODUCTION
The EMM-3VA is only featured for visualising the electrical parameters. The power supply is taken from the measured
voltage or self-supplied.
ACCESSORIES and OPTIONS
Accessories
: transparent cover for frontal protection type
COP-96.
Options
: power supply and measure voltages different than standard
measuring current inputs with internal CT’s
MESURED PARAMETERS
Parameters
Measuring units
Identification Symbols
Phase and three phase voltage
[V-kV]
V
L1-N
V
L2-N
V
L3-N
Σ
V
L-N
Phase to phase and three phase system voltages [V-kV]
V
L1-L2
V
L2-L3
V
L3-L1
Σ
V
L-L
Phase and three phase currents
[A-kA]
I
L1
I
L2
I
L3
Σ
I
Frequency
[Hz]
Hz
L1
Instantaneous Values:
Maximum phase voltage
[V-kV]
V
L1-N max
V
L2-N max
V
L3-N max
Minimum phase voltage
[V-kV]
V
L1-N min
V
L2-N min
V
L3-N min
Maximum phase to phase voltage
[V-kV]
V
L1-L2 max
V
L2-L3 max
V
L3-L1 max
Maximum phase current
[A-kA]
I
L1 max
I
L2 max
I
L3 max
Measured value in 15’
Average phase current (maximum demand)
[A-kA]
I
L1 max (avg)
I
L2 max (avg)
I
L3 max (avg)
