since 2010 Hulasi is
offering enclosures and
integrated sub systems like
PV string disconnector
boxes, array / combiner
junction boxes, main
junction boxes, ACDB, DCDB
for photovoltaic PV
application in India.
Array Junction Boxes [AJB],
also referred to as PV
generator junction boxes and
combiner boxes, basically
collect DC power from
[generally 4 to 16] PV
strings. Collected power is
then transferred either
directly or through a main
junction box [MJB] to power
inverter. The Power inverter
converts the DC power to AC
which after metering is used
for captive consuption [off
grid application] or
supplied [sold] to the grid.
Array Junction Boxes are
provided with one or more of
the accessories mentioned
below to improve their
functionality.
--> Fuse / MCB for over
load protection on each
string
--> Fuse / MCB Over load
protection on output side
--> Dis connector /
isolator on the output side
to isolate the AJB from the
MJB / Inverter
--> Plug in [plug out]
type PV string input
connectors: these special
connectors enable quick yet
reliable connection and
disconnection of the PV
string from the array
junction box. This is useful
during maintance and site
upgradation work.
--> Blocking DIODES for
reverse current flow
protection
--> Class II Surge
Protection Devise for
protection against
electrical surges
--> Individual
string performance
monitoring device and
device for data transfer to
control room.
This is useful in case of
large PV installations. This
enables easy identification
of PV modules that are
performing at below optimal
level. after identification
such PV panels / modules can
be repaired or replaced.
--> MC4 compatible string
connectors
Because Array Junction Boxes
are installed in outdoor
environment near the PV
modules they are normally
required to be made from a
material that is rugged,
fire resistant, electrically
insulated and UV resistant.
Poly carbonate is one such
material. Hanut India is
supplying Array Junction
Boxes made from imported
refined Poly carbonate
material. The box provides
IP 65 level protection from
dust and water. It is Class
II electrical enclosure
& is UL 94 certified.
Hanut India can fully
customize the PV generator
junction boxes to meet
customers' special
requirements.
Array junction boxes by
Hanut India are installed
in several MW size solar
PV power plants and also
in telecom tower based
solar PV projects.
Direct & Indirect
customers include Genus
Power, Gensol, Lanco
Solar, Kirloskar Limited,
Moser Baer, ACME, IOCL,
DMRC, Trident Hotels, ...
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