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000564AG
5 - Installation
C
haracteristics and sizing of the cable for back-up output
The section of the conductor for the back-up output must be sized in
order to avoid high impedances of the cable which connects the back-up
output to the load; in fact if the impedance is too high there is the risk that
the load is powered at a lower voltage than the nominal voltage.
max 4 mm²
10 ÷ 17 mm
The table shows the maximum length of the line conductor based on the
cross-section of this conductor:
Conductor cross-sec-
tion
of line (mm²)
Maximum length of the
line conductor (m)
1.5
6 m
2.5
11 m
4
19 m
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
L
oad protection switch (AC disconnect switch) for back-up output
To protect the AC back-up connection line of the inverter, a device must
be installed to protect against maximum current and leakage to ground,
with the following characteristics:
REACT-3.6-TL
REACT-4.6-TL
Type
Automatic circuit breaker with diffe-
rential thermal magnetic protection
Voltage rating
230 Vac
Current rating
16 A
Magnetic protection characteri-
stic
B/C
Type of differential protection
A/AC
Differential sensitivity
30 mA
Number of poles
2
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