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INSERTION ON THREE-PHASE LINE WITH 4 WIRES
S1
S2
S1
S2
S1
S2
S1
L1
P1
S1
L2
P1
S1
S2
L3
P1
P2
N
N.B. on line with 3 wires (without neutral or with neutral not supplied) the N
terminaln must not be connected.
INSERTION ON THREE PHASE LINE WITH 3 WIRES AND 2 CT
(AARON insertion)
(only for INSULATED CURRENT INPUTS option)
S1
I1
S2
S1
I2
S2
S1
I3
S2
S1
L1
P1
L2
S1
S2
L3
P1
P2
N.B. it's better, where possible, to use 3 CT (above all with unbalance loads)
INSERTION ON THREE-PHASE BALANCED WITH 3 OR 4 WIRES
S1
S2
S1
S2
S1
S2
S1
L1
P1
L2
L3
N
N.B. on line with 3 wires (without neutral or with neutral not supplied) the N
terminaln must not be connected.
INSERTION ON SINGLE PHASE
S1
S2
S1
S2
S1
S2
S2
S1
L1
P1
P2
N
N.B. If the multimeters are used on single phase line, the measure are
referred on the L1 phase. The others datadisplayed relatives at three
phase system are not to consider.
EMM-4hp-ETH
V
L1
I1
auxiliary power
V
L2
supply
V
L3
I2
N
EMM
I3
V
L1
auxiliary power
V
L2
supply
V
L3
N
EMM
V
L1
I1
auxiliary power
V
L2
supply
V
L3
I2
N
EMM
I3
V
L1
I1
auxiliary power
V
L2
supply
V
L3
I2
N
EMM
I3
manual de instrucciones
Digital Input connection
From 80 to 250 Vac
From 90 to 250 Vdc
it's better to put a fuse (50mA 250 V fast)
on the digital input.
The maximum current absorbed is 1 mA.
EMM with
internalCT
with Ineutral
option
In
L1
L2
L3
S1
S2
N
P1
P2
CT connection to
read the neutral
current
Digital Outputs:
DO1 output if used as PULSE is linked to the
ACTIVE ENERGY counter,
DO2 output if used as PULSE is linked to the
REACTIVE ENERGY counter.
DO1 and DO2 can be used as ALARM and they
can be linked to a measure.
IM452-E v1.0
V
L1
V
L2
V
L3
N
Voltage insertion with 3 VT
Max 150mA
Max 230Vac/dc
EMM
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