Electrex Atto RCM D4 ECT Manual de instalação - Página 3

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CURRENT CONNECTION
Use only the CT's provided with the instrument. Connect the CT outputs to the terminals
marked I1, I2, I3 according to the applicable diagrams that follow. Each input corresponds
to a diff erential channel.
1P2W
CH1 CH2 CH3
S1 S2 S1 S2 S1 S2
L1
N
3P3W
CH1 CH2 CH3
S1 S2 S1 S2 S1 S2
L1
L2
L3
EXAMPLE CONNECTION OF 3 DIFFERENTIAL CHANNELS
The instrument can measure up to 3 specifi c diff erential channels at the same time. Enable
the corresponding RCD channels according to the wiring used.
CH1
S1 S2 S1 S2 S1 S2
L1
L2
L3
N
L1
N
3P4W
CH1 CH2 CH3
S1 S2 S1 S2 S1 S2
L1
L2
L3
N
2P2W
CH1 CH2 CH3
S1 S2 S1 S2 S1 S2
L1
L2
3CH
CH2 CH3
L1
L2
L3
VOLTAGE CONNECTION
Use cables with max cross-section of 2,5 mm
to the terminals marked VOLTAGE INPUT on the instrument according to the applicable
diagrams that follow.
1P2W
L
N
U1 U2 U3
N
VOLTAGE INPUT
3P4W / 3P4W-B-3U / 3I
L1
L2
L3
N
U1 U2 U3
N
VOLTAGE INPUT
3P3W / 3P3W-B-3U
L1
L2
L3
U1 U2 U3
N
VOLTAGE INPUT
POWER SUPPLY
The instrument is equipped with a separate power supply. The power supply terminals
are numbered (17) and (18). Use cables with max cross-section of 2,5 mm
4 mm
2
if rigid.
1
2
U1 U2 U3
N
17 18
1920
VOLTAGE INPUT
POWER
AUX
SERIAL LINE CONNECTION
I1
I2
I3
RS-485
S1 S2 S1 S2 S1 S2
A B
Max cable length: 1000 meters.
if stranded, 4 mm
if rigid and connect them
2
2
3I
L
N
U1 U2 U3
VOLTAGE INPUT
3P4W-B
L1
L2
L3
N
U1 U2 U3
VOLTAGE INPUT
2P2W / 3P3W-B
L1
L2
L3
N
U1 U2 U3
VOLTAGE INPUT
POWER SUPPLY
1
230/240Vac +/- 10% 50/60Hz
2122
2
F: 500 mA T
RS485
AUX
Address
101112
13
Baud rate
Parity
Bit of Stop
N
N
N
if stranded,
2
27
38400
None
2