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G
rid output connection (AC side)
When working with the wiring box
always protect the top of wiring box with proper IP65 protection covers (optional accessory
content in the "PVS-175 Installation KIT", to be ordered separately) on the housing. Refer to
the dedicated chapter "Installation of IP65 protection covers for wiring box openings (long term
installation)" for further information about the installation procedures.
C
haracteristics and sizing of the protective grounding cable
Any failure of the inverter when it is not connected to earth through the appropriate connection
point is not covered by the warranty.
Cable diameter range
Max. conductor cross section
Cable lug dimensioning
The inverter must be connected to a three-phase TN system with the
center of the star connected to ground. To connect the inverter to the
grid is necessary to use a three-wire connection (3 phases) without
neutral cable.
In any case, the inverter's earth connection is mandatory.
Depending of the type of the AC panel it's possible to use single
conductors cables or a multipolar cable:
- Single-core configuration have 3xM40 cable glands
"T" phases and a M32 cable gland
- Multi-core configuration (optional) have a M63 cable gland
"R", "S", "T" phases and a M32 cable gland
The connections can also be made with the wiring box
the power module
which can be connected later for commissioning.
01
detached, (pay particular attention to outdoor installations)
02
ABB inverters must be earthed via the connection points marked with
the protective earth symbol
conductor cross-section for the maximum ground fault current that the
generating system might experience. In any case the minimum cross
sectional area of the protective earthing conductor must be at
least 1/2 of phase conductors cross sectional area.
The ground connection can be made through the Protective earth point
(int.)
, Protective earth point (ext.)
26
regulations in force in certain countries of installation).
The sizing of the ground cable depend on the choice of the protective
earth point (internal
or external
26
Protective earth point (int.)
18 - 25 mm
185 mm² copper
240 mm² aluminium
for M10 Stud
a = 10.5 mm (min)
b = 40 mm (max)
- 69 -
11
for the grounding cable.
12
for the grounding cable.
12
02
and using a cable with an appropriate
or both (this is required by
10
) where it will be connected:
10
Protective earth point (ext.)
26
-
-
for M8 Stud
a = 8.4 mm (min)
b = all dimension accepted
5 - Installation
for the "R", "S",
for the
11
detached from
10
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