5
STANDARDS
VBHNxxxSJ and VBHNxxxKJ series comply with the
requirements of IEC61215, IEC61730
-
1, IEC61730
-
2
and the CE mark.
APPLICATION CLASS OF PRODUCT
HIT
TM
are applied to application
class A
and
safety
class II
. It may be applicated in systems operating at
greater than 50 VDC or 240 W, where general contact
access is anticipated.
FIRE CLASS OF PRODUCT
The fire rating of this module is valid only when
mounted in the manner specified in the mechanical
mounting instructions.
HIT
TM
fill
fire class C
that provides to IEC61730
-
2.
Class C roof coverings are effective against light fire
test exposures. Under such exposures, roof coverings
of this class afford a light degree of fire protection to
the roof deck, do not slip from position, and are not
expected to produce flying brands.
JUNCTION BOX AND TERMINALS
•
Modules equipped with one junction box
contain terminals for both positive and nega-
tive polarity, and bypass diodes.
•
One terminal is dedicated to each polarity (with
the polarity symbols engraved onto the body of
the junction box) (see Figure 2).
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 unde-
sirable heating to occur.
•
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 proper circuit protection for the sys-
tems within the specified system voltage, so
that you do not need any other additional
bypass diodes.
•
Specifications of bypass diodes for the
VBHNxxxSJ modules are as follows:
Number of bypass diode: 4 diodes
Number of series cells per bypass diode: 24
cells / diode (See Figure 3).
MECHANICAL LOADING
The method offers a maximum load as shown in the
table
“
Mount location and load resistance
”
in Figure 1
and Figure 5 is a static state on the module surface.
Cable
Figure 2. Configuration of Junction
Box
Connector (SMK
plug)
Positive (+)
Negative (
-
)
24 cells / diode
24 cells / diode
24 cells / diode
24 cells / diode
Figure 3. Number of series cells per by-
pass diode
