Bypass Diode; Installation; General; Operating Conditions - Panasonic EverVolt EVPV Series General Installation Manual

BYPASS DIODE

• When the modules in series strings
are shaded partially, 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.

Installation

GENERAL

Please read this guide completely
before installation or use of the
modules.

OPERATING CONDITIONS

Panasonic recommends that modules
be operated within the following
Operating Conditions. An installation
location with conditions beyond the
Operating Conditions or with other
Special Conditions (see below) should
be avoided. Operating Conditions of
Panasonic modules are as follows:
1) The modules should be operated
only in terrestrial applications. No
space or other Special Conditions.
2) The operating temperature must be
within -40ºF(-40ºC) to 185ºF(85ºC).
3) The wind pressure load of the
installation site should be less than
Load Resistance shown in "Mount
Locations and Load Resistance" table
in Figure 9-17.

UNPACKING AND HANDLING

• Do not hit the back sheet of a
module by the connector when
unpacking and handling.
• Please do not expose the connector
the rain water and dust.
• To avoid the damage of the back
sheet by the connector, fix the
cables to the frame with tape after
unpacking. (refer Figure 5)
• Do not handle modules by their
cables or junction box. Handle
them by the frame with both hands
in any situation.
• The anti-reflection glass of a
module is easy to be soiled, when it
is grasped by hand or hand gloves.
General Installation Manual
• The use of a diode to bypass
the shaded area can minimize
both heating and array current
reduction.
• All modules are equipped with
factory installed bypass diodes. The
factory installed diodes provide
So it is recommended to hold
cardboard or frames when carrying
or installing the solar module.
When cables and connectors
touch the surface of the glass, it
may soil the surface too. It is also
recommended to avoid contact of
cables and connectors with surface
of the glass.
Figure 5. Fixing of cables and connectors

CABLE MANAGEMENT

To ensure a long life span of the cables
and reduce the potential for damage to
the cables, follow the instructions
below:
• To prevent stress on the junction
box casing, ensure the cable exits
the junction box in a straight line
before any bend in the cable.
• The cables must have a minimum
bending radius of 1.2 in (30 mm)
to avoid damage to the insulation
(refer Figure 6).
• Ensure cables do not hang loose
where they may be damaged
through friction or stress, e.g.,
proper circuit protection for the
systems within the specified
system voltage, so that you do not
need any other additional bypass
diodes.
caused by mechanical abrasion or
grazing animals.
• Protect connectors from falling or
dropping water by locating them
directly beneath a module.
• Cables must be firmly secured
to the structure, without over-
tightening, as this can deform the
cable insulation using UV-resistant
cables.
• When securing the connector, place
it so that it has with sufficient air
circulation all around. This allows
the connector to dry effectively
and avoids the risk of damage or
degradation of the connection.
• Secure the cable either side of the
connectors to ensure no stress is
exerted on the connector casing or
cable entry.
• To enable correct cooling and
drying of the connectors, do
not add extra protection to the
connector e.g., heat shrink, grease
or tape.
Figure 6. Minimum cable bend radius
8