8
Module Terminations
A junction box as a terminal enclosure is
equipped for electrical connections.
VBHNxxxSA11
and
VBHNxxxSA11B
Modules are equipped with MC
TM
plugs
as a terminal enclosure. Use these MC
TM
plugs for electrical connections
(see
Figure 4.1).
Junction Box and Terminals
Modules are equipped with one
junction box containing terminals for
both, positive and negative polarity,
and bypass diodes.
Each terminal is dedicated to one
polarity with the polarity symbols
engraved onto the body of the
junction box (see Figure 4.2).
Each terminal is provided with
factory installed lead cables and a
latching connector for series and
string connections. Always use these
connectors and do not detach them
from cables.
Latching connectors are type IV and
made by Multi-Contact. Supplied
connectors listed by UL.
In order to comply with NEC 2008, a
locking sleeve needs to be used with
all connectors that are exposed.
The locking sleeve (PV-SSH4) is made
by Multi-Contact and can only be
released with a special tool also
made
by Multicontact
(PV-MS).
Locking sleeves are not supplied
with
modules
and
must
be
purchased separately.
Conduit
In applications where wire raceways
or conduit are used, follow the
applicable
codes
for
outdoor
installations..
Verify that all fittings are properly
installed to protect wires against
damage
and
prevent
moisture
intrusion.
DIODES
Bypass Diodes
When modules in series strings are
partially
shaded,
it
may
cause
reverse
voltage
across
cells
or
modules, because the current from
other cells in the same series is
forced to flow through the shaded
area. This may cause undesirable
heating to occur.
The use of a diode to bypass the
shaded area can minimize both
heating and array current reduction.
Modules are equipped with factory
installed bypass diodes. The factory-
installed
diodes
provide
proper
circuit protection for the systems
within the specified system voltage,
so that you do not need any other
additional bypass diodes.
Contact your Panasonic Authorized
Representative for proper diode
type, if it is necessary to add or
change
diodes
due
to
system
specifications.
MAINTENANCE
Some maintenance is recommended
to
maintain
optimal
output
performance of the solar modules.
If the module surface becomes dirty,
it may reduce output power.
It is recommended to clean the
surface of the module with water
and a soft cloth or sponge, twice or
more per year.
A mild non-abrasive detergent may
be applied for persistent dirt.
It is also recommended to inspect
the
electrical
and
mechanical
connections annually.
If you need electrical or mechanical
inspection or maintenance, it is
recommended to have a licensed
authorized professional carry out
the inspection or maintenance to
avoid the hazards of electric shock
or injury.
Disclaimer of Liability
Panasonic
does
not
assume
responsibility and expressly disclaims
liability for loss, damage, or expense
arising out of, or in any way
connected
with
installation,
operation, use, or maintenance by
using this manual.
Panasonic assumes no responsibility
for any infringement of patents or
other rights of third parties, which
may result from use of modules.
No license is granted by implication
or under any patent or patent rights.
The information in this manual is
believed to be reliable, but does not
constitute
an
expressed
and/or
implied warranty.
The return of any modules will not
be accepted by Panasonic unless
prior written authorization has been
given by Panasonic.
As part of Panasonic’s policy of
continuous improvement, Panasonic
reserves the right to change product
specifications at any time without
prior notice.
Customer Services
For further information, please visit
http://panasonic.net/energy/solar/
or
contact
your
Panasonic
Authorized Representative.
Figure 4.2 Junction Box
Cable
Negative ( - )
Positive ( + )
Figure 4.1 Connectors
Option:
Safety
lock
clip
Connector
MC
TM
Plug
Cable
Negative ( - )
Positive ( + )
