Standards; Application Class Of Product; Fire Class Of Product; Junction Box And Terminals - Panasonic HIT VBHN SJ53 Series General Installation Manual

STANDARDS

VBHNxxxSJ53 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 speci-
fied in the mechanical mounting instruc-
tions.
TM
HIT fill fire class C that provides to IE-
C61730-2. 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
Cable
Connector
Negative (-)
Positive (+)
Figure 2. Configuration of
Junction Box
produce flying brands.

JUNCTION BOX AND TERMINALS


Modules equipped with one junc-
tion box contain terminals for both
positive and negative 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 mod-
ules, because the current from oth-
er 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
Figure 3. Number of series cells
per bypass diode
5
heating and array current reduc-
tion.

All modules are equipped with fac-
tory installed bypass diodes. The
factory installed
proper circuit protection for the
systems within the specified system
voltage, so that you do not need
any other additional bypass diodes.

Specifications of bypass diodes for
the VBHNxxxSJ53 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.
24 cells / diode
24 cells / diode
24 cells / diode
24 cells / diode
diodes provide