Contrel EMM-m3-VA Instruction Manual

INSTRUCTION MANUAL
IM425-U v3.1
EMM-R3-VA
EMM-µ3-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
EMM-R3-VA
EMM-µ3-VA
ACCESSORI ED OPZIONI
accessories: transparent cover for frontal protection.
options: C1 auxiliary power supply 230 V
C2 auxiliary power supply 115 V
1A current inputs for CT ../1Amp.
T current inputs with galvanic insulation (not for direct connection line insertion)
P n.2 digital output alarm signal (Photomos ca/cc).
INTRODUCTION
The EMM-R3-VA and EMM-µ3-VA models are only featured for visualising the electrical parameters. The power supply is
taken from the measured voltage or self-supplied.
MESURED PARAMETERS
Parameters
Phase and three phase voltage
Phase to phase and three phase system voltages
Phase and three phase currents
Frequency
Hour meter
STORED PARAMETERS
Instantaneous Values:
Maximum phase voltage
Minimum phase voltage
Maximum phase to phase voltage
Maximum phase current
Measured value in 15'
Average phase current (maximum demand)
checks
EMM-R3-VA EMM-μ3VA
Measuring units
[V-kV] V
[V-kV] V
[A-kA] I
[Hz] Hz
[hr] hr1
[V-kV] V
[V-kV] V
[V-kV] V
[A-kA] I
[A-kA] I
instruction manual
Identification Symbols
V
L1-N L2-N
V
L1-L2 L2-L3
I
L1 L2
L1
hr2
V
L1-N max L2-N max
V
L1-N min L2-N min
V
L1-L2 max L2-L3 max
I
L1 max L2 max
I
L1 max (avg) L2 max (avg)
Check phase rotation
IM425-U v3.1

V
L3-N
V
L-N

V
L3-L1
V
L-L

I
L3
I
hr3
V
L3-N max
V
L3-N min
V
L3-L1 max
I
L3 max
I
L3 max (avg)
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