Characteristics And Sizing Of The Cable For Backup Output; Load Protection Switch (Ac Disconnect Switch) For Backup Output; Connection To Ac Backup Output Terminal Block - ABB REACT 2 Series Product Manual

C
haracteristics and sizing of the cable for BACKUP output
max 4 mm²
L
N
10 ÷ 17 mm
L
oad protection switch (AC disconnect switch) for BACKUP output
C
onnection to AC BACKUP output terminal block
To avoid
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Three-pole cable required. The cross-section of the AC line conductor
must be sized in order to prevent unwanted disconnections of the in-
verter from the grid due to high impedance of the line that connects the
inverter to the power supply point.
The table shows the maximum length of the line conductor based on the
cross-section of this conductor:
Conductor cross-section of line
(mm²)
1.5
2.5
4
The values are calculated in nominal power conditions, considering:
- loss of power along the line no greater than 1%
- use of copper cable, with HEPR rubber insulation and positioned in open air
To protect the AC BACKUP connection line of the inverter, a device must
be installed to protect against maximum current and leakage to ground,
with the following characteristics:
Type
Voltage rating
Current rating
Magnetic protection type
Type of differential protection
Differential sensitivity
Number of poles
Strip 10mm of sheathing from the cables and then insert into the inverter
the cable, making it pass through the AC output (BACKUP) cable gland
; the maximum diameter of the cable accepted by the cable gland is
16
from 10 to 17 mm².
Connect on the AC output (BACKUP) screw terminal block
cable (yellow-green) to protect against contact marked by the symbol , the
neutral cable (usually blue) to the terminal marked by the letter N and the
phase cable to the terminal marked by the screen-print L; every indivi-
dual terminal of the terminal block accepts a cable with maximum section
tightening torque of at least 1,5 Nm).
the cable gland (7.5 Nm tightening torque) and check the tightness.
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5 - Installation
Maximum length of the
line conductor (m)
6 m
11 m
19 m
REACT2-3.6-TL REACT2-5.0-TL
Automatic circuit breaker with differen-
tial thermal magnetic protection
230 Vac
32 A
B/C
A/AC
30 mA
2
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the ground