Distribution Grid Output Connection (Ac Side); Characteristics And Sizing Of The Line Cable - ABB REACT 2 Series Product Manual

D
istribution grid output connection (AC side)
Any failure of the inverter when it is not connected to ground through the appropriate terminal (AC
connector) and to the metal frame (external grounding protection) is not covered by the warranty.
BATTERY
PV
COMM.
METER
POWER
DC SWITCH
BACKUP
C
haracteristics and sizing of the line cable
max. 6 mm²
N
L
Ø10÷14mm
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 connect the inverter to the grid you need 4 connections: ground, neut-
ral, phase and external grounding protection In any case, connection
of the inverter to ground is mandatory.
The connection of the grid cable to the inverter is realised through the de-
dicated AC output connector
17
GRID
The cross-section of the AC line conductor must be sized in order to pre-
vent unwanted disconnections of the inverter from the grid due to high
impedance of the line that connects the inverter to the power supply; If
the impedance is too high it causes an increase in the AC voltage which,
on reaching the limit set by the standards in the country of installation,
causes the inverter to switch off.
In order to allow installation of the grid cable inside the AC output con-
nector
17
The table shows the maximum line conductor length in relation to the
section of the conductor itself:
Line conductor
cross section (mm²)
1.5
2.5
4
6
- 76 -
by carrying out the following operations:
17
Line conductor maximum length (m)
REACT2-UNO-3.6 REACT2-UNO-5.0
5 m
10 m
16 m
24 m
5 - Installation
/
6 m
10 m
16 m