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CONNECTIONS
For a correct use of the EMM-4 the wiring diagram is contained in
the present manual and it must be respected.
- POWER SUPPLY
4 screw terminals are available for the auxiliary supply in order to
use the following voltages:
0 – 110 = 100-125 V (50-60Hz)
0 – 230 = 220-240 V (50-60Hz)
0 – 400 = 380-415 V (50-60Hz)
- VOLTAGE INPUT MEASURE
4 screw terminals are available for the 3 phase plus neutral
system network. The maximum voltage between phase to phase
must not overcome 500 Vrms.
In case of three phase application with or without neutral not
distributed, it's enough not to connect the terminal N.
- CURRENT INPUT MEASURE
6 screw terminals are available for the connection of the external
CT with secondary 5A. It's compulsory to use external CT's.
NOTE: It's fundamental to respect the correct phase sequence,
the connections between current and voltage inputs phase must
not be inverted (for example, CT placed on phase L1 must
correspond to the I1 input) and at the same time it's not correct to
invert the S1 and S2 terminals considering that the power factor
measure could not be reliable.
The temperature sensor, duly compensated, is placed inside and
at the back of the instrument in order to test the temperature in
the electric board in proximity of the same instrument.
M a d e in E U
S 2
I3
S 1
S 2
I
2
S 1
S 2
I
1
4
4 0 0 V
S 1
3
2 3 0 V
11 0 V
2
V
L 1
1
0
!
V
L 2
E M M - 4
V
L 3
N
s .n .
DIMENSIONS
k
M
V
L -N
E M M-4
L1
A
electrical multi meter
P.F.
L2
W
VAr
VA
L3
ΣL
V
L -L
PE Ak
k
V
V
H z° C
L - N
L - L
9 6
R3
92
panel flush mounting according to DIN 43700
back side view
extracted
screw terminals
9
81
14
pan el cu t-out
FRONT PANEL DESCRIPTION
F
k
M
L1
L2
L3
k
G
CONTROL AND DISPLAY
A
press button for the visualisation of electrical
parameters of three-phase system and peak values.
B
press button for the selection of the electrical
parameter to be displayed on display F.
C
press button for the selection of the electrical
parameter to be displayed on display G.
D
LED bar for the indication of the electrical parameter
displayed on display F.
E
LED bar for the indication of the electrical parameter
displayed on display G
F
3 displays for the visualisation of electrical measures
of every phase.
When ΣL LED is ON, only the main display will be
active showing the three phase system value of the
electrical measure selected.
LED k and M show the eventual multiplying factor (k =
1.000, M = 1.000.000)
G
display for the visualisation of the electrical measure
indicated in LED E.
The voltage values are referred to the three phase
system.
The k LED displays the reading in kilo (x 1000).
A+C
When pressing simultaneously the instrument pass to
the program setup.
A+B
press simultaneously to reset the peak value.
D
V
L-N
EMM-4
A
electrical multimeter
P.F.
B
W
VAr
VA
A
ΣL
V
L-L
PEAk
E
V
V
Hz °C
L-N
L-L
C
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