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000563AG
5 - Installation
C
onnection and configuration of the REACT-MTR-3PH
(three-phase)
The indications set out below are necessary to connect the REACT-MTR to the REACT sy
-
stem. Always refer to the specific documentation supplied with the REACT-MTR-3PH.
The energy meter REACT-MTR-3PH
58
is a DIN rail device (4 modules)
and must be installed where the electricity supply is three-phase.
To avoid risks of electrical shock, all wiring operations must be carried out with the AC disconnect
switch (or the supply meter) upstream of the REACT-MTR disconnected.
• Disconnect the AC disconnect switch upstream of the REACT-MTR.
• Strip the insulation of the cable for the length which is indicated on the
meter (13mm).
• Connect the cables of the three-phase line in accordance with the lay
-
out printed on the meter (L1, L2, L3 and N) to the three-phase connection
terminal block
59
and tighten the screws (tightening torque 2.0 Nm).
Take note of the phase to which the REACT system is connected; this information will be
requested when the system is commissioned.
• Connect the cables of the serial line A (37), B (36) and C (37) on the
terminal block
60
set on the rear of the REACT-MTR-3PH
58
and tighten
the screws (tightening torque 0.25 Nm).
Subsequently the cable must be connected inside the REACT-UNO re-
specting the correspondence between the signals of the serial line.
Serial line terminal block
of the REACT-MTR
60
Communication and control signal
terminal block
21
of the REACT-
UNO
B (36)
Terminal 16 (+T/R)
A (37)
Terminal 14 (-T/R)
C (35)
Terminal 18 (RTN)
RS485 METER
REACT
POWER A
LARM GF
I
ESC
UP D
OWN E
NTER
REACT-UNO
REACT-B
ATT
To connect the serial cable inside the inverter, refer to the section “Connection of METER
RS485 serial communication line” in this chapter.
• Install the device on the DIN rail and ensure to trigger the fixing system
on it
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