Bypass Diode; Installation General; Operating Conditions; Unpacking And Handling - Panasonic VBHN330SA17E General Installation Manual

BYPASS DIODE


When the module is shaded partial-
ly, it may cause reverse voltage
across cells, because the current
from other cells in the same series is
forced to flow through the shaded
area. This may cause undesirable
heating.

The use of a diode to bypass the
shaded area can minimize both
heating and module current reduc-
tion.

All modules are equipped with fac-
tory 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.

Specification of bypass diode is as
follows; Type: Number of bypass
diode: 4 diodes, Number of series
cells per bypass diode: 24 cells /
diode. See Figure 3.

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 Condi-
tions or with other Special Conditions
(see below) should be avoided. Operat-
ing Conditions of Panasonic modules are
as follows:
24 cells /
24 cells /
24 cells /
24 cells /
Figure 3. Number of series
cells per bypass diode
1) The modules should be operated only
in terrestrial applications. No space or
other Special Conditions.
2) The operating module temperature
must be within –30°C (-22°F ) to 85°C
(185°F ).
3) The wind pressure load of the installa-
tion site should be less than Load Re-
sistance shown in "Mount Locations and
Load Resistance" refer to table 1-3.

UNPACKING AND HANDLING


Do not hit the back sheet of a mod-
ule with the connector when un-
packing and handling.

Please do not expose the connector
to rain water and dust .

To avoid damage to the back sheet
by the connector, Do not cut the
string binding the cables of junction
box. See Figure 4.

Do not handle modules while hold-
ing their cables, junction box or
microinverter. Handle them while
holding the frame with both hands
in any situation.

The anti-reflection glass of a module
is easily soiled, when it is grasped by
hand or hand gloves. So it is recom-
mended to hold frames when carry-
ing or installing the solar module.
When cables and connectors touch
the surface of the glass, it may soil
the surface too. It is also recom-
mended to avoid contact of cables
and connectors with surface of the
glass. (If the glass surface becomes
dirty, see section of "anti-reflection
glass surface cleaning".)
Do not cut the string binding the cables of Junction box
Figure 4. The string binding the cables of Junction box
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