Wiring; General; Module Wiring; Array Wiring - Panasonic HIT VBHN SJ53 Series General Installation Manual

WIRING

GENERAL


All wiring should be done in accord-
ance with applicable
codes.

All wiring should be done by a qual-
ified, licensed professional.

Wiring should be protected to help
ensure personal safety and to pre-
vent its damage.

Please connect each cable after
confirming the polarity of it is cor-
rect.

Connectors between modules must
be inserted until they click.

When connecting the connectors,
please make sure that foreign mat-
ter such as water, sand and so on
do not get inside the connector.
Also, please keep in mind that if
you leave the connector in a non-
connected state for a long period of
time, contamination
matter is likely to occur.

If an extreme load is applied to the
cable, the cables may come off the
junction box body or the connect-
ors. Please connect so that a strong
load is not applied to the cable.

When fixing the cable to the stand,
make sure the minimum bending
radius of the cable is 30 mm or
more.

Do not disconnect terminals while
modules generate electricity and
connect electrical load to avoid the
hazard of electrical shock.

Cable conduits should be used in
locations where the wiring is inac-
cessible to children or small animals.

These modules contain factory in-
stalled bypass diodes. If these mod-
ules are connected to each other
incorrectly, the bypass diodes, ca-
bles, or junction box may be dam-
aged.

Please contact your Panasonic Au-
thorized Representative with ques-
tions regarding other electrical con-
nections if needed.

MODULE WIRING


All modules connected in series
should be of the same model num-
ber and/or type.
electrical

The number of VBHNxxxSJ53 and
KJ01 modules, that can be wired in
series, is recommended to be twelve
(12) or fewer. If connecting thirteen
(13) modules and more in series,
check local temperature conditions
to ensure compliance with maxi-
mum system voltage limitations.

Do not connect modules in parallel
without using connection devices
that connect to appropriate FUSE
for each series string or each mod-
ule. For the installation of connec-
tion devices, refer to the installation
manual of connection devices.

Do not connect modules in parallel
without maximum over current
protection.

ARRAY WIRING

of foreign

The term "array" is used to describe
the assembly of several modules on
a support structure with associated
wiring.

When installing a PV array, the sys-
tem design must be completed with
reference to the module electrical
specifications for proper selection
of inverters, fuses, breakers, charg-
ing controllers, batteries and other
storage devices. In particular, as the
temperature characteristic of the
PV module, the voltage value rises
on the low temperature side. Con-
sider the lowest temperature in the
area where the system is installed
and select the equipment so that it
does not exceed the rated voltage
of the equipment.

Modules are equipped with SMK
connectors
terminal enclosure. Use these SMK
connectors
tions.

Use copper wire which is insulated
to withstand the maximum possible
system open circuit voltage. For
applications where wire conduits
are used,
codes for outdoor installation of
wires in conduits. Minimum diame-





EARTH GROUND WIRING





(P51-5H/R51-5) as a
for electrical connec-
follow the applicable
8
ter of wire conduit is 4 mm
temperature rating of the conduc-
tor is –40—90 °C.
In order to avoid submerging cables
and connectors in the water, cables
must be fixed either to the module
frame using cable fixing holes or to
the mounting structure. Also, if the
cable is not secured, a force may be
applied to the cable from the out-
side, and the module may be dam-
aged.
Do not insert a PV cable between
back side and mounting structure
rail. When snow weight is applied
to the module, load may be applied
to the cable.
Verify that all fittings are properly
installed to protect cables against
damage and prevent moisture in-
trusion.
Check your local codes for require-
ments.
Use the grounding wire (green)
which is 5.5 mm2 or more to ensure
that all modules are grounded by
the method shown in the figure 6.
When grounding the
please use a hole near the ground
mark displayed on the frame. For
metal parts for grounding, consider
a combination that does not cause
corrosion due to dissimilar metal
contact.
We recommend installing a light-
ning rod and SPD (Surge protection
device) to reduce damage or break-
down to the PV module caused by
lightning.
Check your local codes for require-
ments.
M4 nut (stainless steel)
Flat washer (stainless steel)
Star washer (stainless steel)
Round crimping terminal
Ground wire (5.5mm
Ground hole
Flat washer (stainless steel)
Spring washer (stainless steel)
M4×16 bolt
Figure 6. Grounding method
2 . The
modules,
2
, green)