Kyocera KD240GX-LFB2 User manual

INSTALLATION MANUAL
FOR KYOCERA PV MODULES
Please read this manual carefully before installing the modules.
6C-211046
1. INTRODUCTION
As the world leader in the development and application of
high technology ceramic/silica materials, Kyocera offers a
wide range of highly efficient and reliable crystalline silicon
solar photovoltaic (PV) power modules. Kyocera began to
extensively research PV technology in 1975 and
commenced manufacturing operations in 1978. Since then,
Kyocera has supplied millions of cells and modules
throughout the world. With years of experience and
state-of-the-art technology, Kyocera provides the highest
quality PV power modules in a range of sizes designed to
meet the requirements of the most demanding energy users
worldwide.
2. APPLICATIONS
Kyocera PV module (hereinafter referred to as “the PV
module”) is a reliable, virtually maintenance-free direct
current (DC) power source, designed to operate at the
highest level of efficiency. The PV module is ideal for
residential, commercial, or utility applications; grid-tie or
off-grid applications and those with or without using storage
batteries.
3. WARNINGS & SAFETY
PV modules generate electricity when exposed to light.
Arrays of many modules can cause lethal shock and burn
hazards. Only authorized and trained personnel should
have access to these modules. To reduce the risk of
electrical shock or burns, modules may be covered with an
opaque material during installation. Do not touch live
terminals with bare hands. Use insulated tools for electrical
connections. Do not use these modules for solar
concentration.
PERMIT
・ Before installing your PV system, contact local
authorities to determine the necessary permits,
installation and inspection requirements.
INSTALLATION AND OPERATION
・ Systems should be installed by qualified personnel only.
The system involves electricity, and can be dangerous if
the personnel are not familiar with the appropriate safety
procedures.
・ Do not step on the module.
・ Although the PV module is quite durable, the glass can
be broken if it is dropped or hit by tools or other objects.
This will render the module inoperable.
・ The module frame is made of anodized aluminum, and
therefore corrosion can occur if the module is subject to
a salt-water environment and/or is in contact with
another type of metal (galvanic corrosion). Pay attention
to the above and take appropriate measures to prevent
corrosion when selecting the installation environment,
material of support structure, and clamping method.
・ The PV module frame(s) must be attached to a support
structure by one of the methods described in Section 6,
INSTALLING PV MODULE.
・ Module support structures used to support the PV
module should be wind rated and approved by the
appropriate local and civil codes prior to installation.
・ Do not expose the back of the module to direct sunlight
・ In Canada, installation shall be in accordance with CSA
C22.1, Safety Standard for Electrical Installations,
Canadian Electrical Code, Part 1.
CAUTION
・ Do not touch the PV module with bare hands.
The frame of the PV module may have sharp edges and
may cause injury. Wear suitable gloves, such as leather
gloves with padding in the palm and finger areas.
FIRE RATING
・ In case of roof installation, the PV module assembly
shall be mounted on a fire resistant roof covering rated
for the application. The PV module is comprised of a
glass front surface and polyethylene terephthalate
(PET) backsheet and has a Class C fire rating.
GROUNDING
・ Refer to “GROUNDING” section.
BATTERY
・ When PV modules are used to charge batteries, the
battery must be installed in a manner which will ensure
the performance of the system and the safety of its users.
Follow the battery manufacturer’s safety guidelines
concerning installation, operation and maintenance
recommendations. In general, the battery (or battery
bank) should be kept away from people and animals.
Select a battery site that is protected from sunlight, rain,
snow, debris, and is well ventilated. Most batteries
generate hydrogen gas when charging which can be
explosive. Do not light matches or create sparks near
the battery bank. When a battery is installed outdoors, it
should be placed in an insulated and ventilated battery
case specifically designed for this purpose.
4. SITE SELECTION
In most applications, the PV modules should be installed in
a location where they will receive maximum sunlight
throughout the year. In the Northern Hemisphere, the
modules should typically face south, and in the Southern
Hemisphere, the modules should typically face north.
Modules facing 30 degrees away from true South (or North)
will lose approximately 10 to 15 percent of their power
KD240GX-LFB2, KD245GX-LFB2
KD250GX-LFB2
・ When handling the modules,
DO NOT HOLD THEM BY
SUPPORTING ONLY ONE
SIDE OF THE FRAME
BECAUSE IT CAN CAUSE
SEPARATION OF THE
GLASS AND FRAME.

output. If the module faces 60 degrees away from true
South (or North), the power loss will be 20 to 30 percent.
When choosing a site, avoid trees, buildings or obstructions,
which could cast shadows on PV modules especially during
the winter season when the arc of the sun is lowest over the
horizon.
5. MODULE TILT ANGLE
The PV modules produce more power when they are
pointed directly at the sun.
For grid-tie installations where the PV modules are attached
to a permanent structure, PV modules should be tilted at an
angle equal to the site's latitude. This will typically result in
the highest annual energy output.
6. INSTALLING PV MODULE
A minimum spacing of 2” (50 mm) is required between the
PV module and the mounting surface around the perimeter
of PV array. The PV modules may be installed in various
applications utilizing a variety of support structure options
and attachment methods. For optimal performance in all
applications, clearance between the module frame and the
mounting surface is required to allow cooler ambient air to
circulate around the back of the module and to avoid
module and/or wiring damage. A minimum of .13” (3.2 mm)
spacing must also be maintained between module frames
to allow for thermal expansion.
The PV modules may be attached to a support structure by
the following methods. The structure should have enough
strength to achieve the mounting span. When installing
modules in a snowy area, an appropriate countermeasure
has to be taken to prevent possible damage to the lower
side frame by slipping snow (e.g. attach supporting parts to
the lower side frame of modules.). Any damage caused by
snow or such countermeasures is not covered under
warranty.
BOLTING: Use 5/16”(8mm) stainless steel (or equivalent in
corrosion resistance) hardware through the existing .35”x.37”
(9×9.5mm) slotted mounting holes in the module frame and
then through the holes on the support structure. Tighten the
screws with adequate torque (usually 132 in-lb; refer
structure manufacturer specifications). Refer to the module
drawings (Section 12) for the position of mounting holes.
CLAMPING: Fasten modules firmly using clamps which will
not be deformed by wind load or snow load. Clamps should
be attached to support structure with 1/4” (6mm) or larger
bolt and nut with adequate torque (usually 71 in-lb; refer
structure manufacturer specifications). Bolt and nut should
be stainless steel or equivalent in corrosion resistance.
Support structure should support the bottom of module at
least .39” (10mm) width or overlap. Clamps must not bend
the module frame nor damage the surface of the frame.
Clampsalso must not shade the sunlightincidence on glass
surface. Take measures to prevent module from falling off
clamps. Refer to the ‘CLAMPING AREA’ in the Module
drawings (Section 12) for the permissible clamping range.
CONTINUOUS CLAMPING:
Continuous clamping means mounting PV module by two
long clamps which cover overall length of the module frame.
Fasten modules firmly using continuous clamps which will
not be deformed by wind load or snow load. Support
structure should support the bottom of module at least .39”
(10mm) overlap. Clamps must not bend the module frame
nor damage the surface of the frame. Clamps also must not
shade the sunlight incidence on glass surface. Take
measures to prevent module from falling off clamps. If there
is clearance between clamp and module side face, take
measures to prevent module from moving or falling off (e.g.
put plastic parts into clearance.). Refer to the
‘CONTINUOUS CLAMPING AREA’ in the Module drawings
(Section 12) for the permissible clamping range.
The clamp specification is below;
A- SUS304 or equivalent
t: thickness L: width a: overlap
0.079" (2.0mm)
and over
min. 1.93"
(49mm)
0.098" (2.5mm)
and ove
r
min. 1.34"
(34mm)
0.12" (3.0mm)
and over
min. 0.94"
(24mm)
Long side clamping;
min. 0.20" (5mm)
short side clamping;
min. 0.35" (9mm)
B-anodized aluminum AL6063-T5 or equivalent
t: thickness L: width a: overlap
0.079"
(2.0mm)
and over
frame
length
min. 0.28 "
(7mm)
0.12"
(3.0mm)
and over
min.
1.50"
(38mm)
0.14"
(3.5mm)
and over
min.
1.18"
(30mm)
0.16"
(4.0mm)
and over
min.
0.98"
(25mm)
Long side clamping;
min. 0.20" (5mm)
Short side clamping;
min. 0.35" (9mm)
The clamp shape and dimensions above are for reference
only, and any damage caused by clamps is not covered
under warranty.
7. MODULE WIRING
The PV module comes pre-wired. Each module has two #12
AWG type PV-wire stranded sunlight resistant output
cables each terminated with SMK R51-7/P51-7 (MC4
compatible) connectors. The positive (+) terminal has a
male connector while the negative (-) terminal has a female
connector. The module wiring is solely for series
connections only, i.e. male (+) to female (-) interconnections.
Series and/or parallel connections shall be made with
#10-14 AWG type PV-wire stranded output cables, having
sunlight resistant and temperature rating of 90℃minimum,
with SMK R51-7/P51-7 (or MC4: PV-KST4/KBT4) connectors.
NOTE: When making connections with the connectors,
make sure the array is disabled. DO NOT MAKE
CONNECTIONS WHILE UNDER LOAD.Module output
connections are marked “Do not disconnect under load”.
NOTE: MAXIMUM SYSTEM VOLTAGE IS 600 VDC.
The PV module and most PV system components have a
maximum system voltage rating of 600 volts DC. Some
grid-tie systems operate at or near this voltage rating. Like
other polycrystalline PV modules, the open-circuit voltage
of the PV modules increases as the ambient temperature
decreases. Maximum system voltage is computed as the
a
t
L

sum of the open-circuit voltage of the series-connected PV
modules for the lowest expected ambient temperature.
Refer to the National Electrical Code Article 690-7(A) for
determining the maximum number of the PV module that
can be placed
in series. Temperature coefficients, specific
to the module of use, can be used to provide the most
accurate prediction of module voltage under temperature
extremes.
NOTE: Limit the maximum number of series connection of
the PV module so that the system voltage is 600V or less.
NOTE: Do not connect the modules in parallel without
maximum over current protection.
NOTE: The minimum radius that the cable can be bent for
the PV module is 1.14” (29mm).
NOTE: Under normal conditions, PV modules may produce
more current and/or voltage than reported in the standard
test conditions. Therefore, when voltage evaluations for
components, capacity of conductors, size of fuses, and size
of control systems connected to the module output are
determined, multiply the values of short-circuit current (Isc)
and open-circuit voltage (Voc) that are marked in the PV
modules by the coefficient, 1.25.
NOTE: Refer to Section 690-8 of the National Electrical
Code for an additional multiplying factor of 125 percent (80
percent derating) which may be applicable.
8. GROUNDING
Before installation, consult the local codes and the
authorities having jurisdiction to determine the necessary
grounding requirements. When installing in the US market,
attach all PV module frames to an earth ground in
accordance with the National Electrical Code (NEC) Article
250. Proper grounding is achieved by connecting PV
module frames and all metallic structural members
contiguously to one another using a suitable grounding
conductor. The grounding conductor shall be of copper,
copper alloy or another material suitable for use as an
electrical conductor per NEC. The grounding conductor
must then make a connection to earth using a suitable earth
grounding electrode. Ensure positive electrical contact
through the anodizing on the module frame extrusion by
utilizing one of the following methods.
Attach the grounding conductor:
(1) to one of the .28” (7mm) diameter holes marked
“ground” using 1/4”(6mm) stainless steel bolt. Wrap
conductor around bolt. Tighten the screws with
adequate torque (usually 62 in-lb; refer structure
manufacturer specifications).
(2) to a ground lug (manufacturer:ILSCO, model:GBL-
4DBT). The lug is attached to one of the .28”(7mm)
diameter holes marked “ground”, using #10-32
stainless steel bolt with 40 in-lb torque.
(3) to a ground lug (manufacturer:ILSCO, model:GBL-
4DBT). The lug is attached to one of the .16”(4mm)
diameter holes marked “ground”, using #10-32
stainless steel tapping machine screw with 30 in-lb
torque. Screw length should be 20mm or less.
(4) to a wire bolt (manufacturer:Tyco, model:2058729-1)
using 3/8”(10mm) wire biding nut with 45 in-lb torque.
The bolt is attached to one of the .19”(4.7mm) diameter
holes marked “ground”, using #8-32 (4mm) mounting
washer nut with 25 in-lb torque.
NOTE: A stainless steel star washer or mounting washer
nut, having contact with anodized surface of the frame,
must be employed to break through the anodized layer of
the frame extrusion and electrically connect the grounding
conductor to the conducting aluminum frame material.
NOTE: As a general rule, avoid direct contact of copper or
copper alloy ground conductors with the aluminum frame
to prevent galvanic corrosion. All ground bond securing
hardware in contact with either the aluminum module
frame and/or copper or copper alloy ground conductors
must be stainless steel.
(1) (2)
(3) (4)
9. BLOCKING DIODES
In systems utilizing a battery, blocking diodes are typically
placed between the battery and PV module output to
prevent battery from discharging at night. The PV module is
made of polycrystalline cells with high electrical “back flow”
resistance to nighttime battery discharging. As a result, the
PV modules do not contain a blocking diode when shipped
from the factory. Most PV charge regulators and inverters
incorporate a nighttime disconnect feature.
10. BYPASS DIODES
Partial shading of an individual module in a source circuit
string (i.e. two or more modules connected in series) can
cause a reverse voltage across the shaded cells within the
module. Module output current is then forced through the
shaded area by the remaining illuminated cells and other
PV modules in series with the partially shaded module(s).
The current forced through the shaded cells within the PV
module(s) causes additional module heating and severe
loss of power. All the PV modules are supplied with factory
Nut
Spring washer
Flat washer
Star washer
Ground lug
Bolt
Aluminum
frame
Nut
Spring washer
Flat washer
Star washer
Ground lug
Bolt
Aluminum
frame
Nut
Spring washer
Flat washer
Ground conductor
Cup washer
Star washer
Aluminum frame
Flat washer
Bolt
Nut
Spring washer
Flat washer
Ground conductor
Cup washer
Star washer
Aluminum frame
Flat washer
Bolt
Wire binding nut
Wire bolt
Ground conductor
Aluminum frame
Mounting
washer nut
Ground conductor
Star washer
Ground lug
Aluminum frame
Tapping screw
Spring washer

installed (non user serviceable) bypass diodes.
The purpose of bypass diodes is to provide a low-resistance
current path around the shaded cells, thereby minimizing
PV module heating and array current losses.
The PV module employs bypass diodes that have:
・ Rated Average Forward Current [IF(AV)] Above
maximum system current at highest PV module
operating temperature.
・ Rated Repetitive Peak Reverse Voltage [VRRM] Above
maximum system voltage at lowest PV module
operating temperature.
11. MAINTENANCE
The PV module is designed for long life and requires very
little maintenance. Under most weather conditions, normal
rainfall is sufficient to keep the module glass surface clean.
If dirt build-up becomes excessive, clean the glass surface
only with a soft cloth using mild detergent and water. USE
CAUTION WHEN CLEANING THE BACK SURFACE OF
THE PV MODULE TO AVOID PENETRATING BACK
SHEET. The PV modules that are mounted flat (0°tilt
angle) should be cleaned more often, as they will not "self
clean" as effectively as modules mounted at a 15°tilt or
greater. Once a year, check the general condition of the
wiring and check to be sure that mounting hardware is tight.
Loose connections may result in a damaged module or
array.
KYOCERA Solar Group Sales Office
KYOCERA Corporation
Corporate Solar Energy Group
6 Takeda Tobadono-cho Fushimi-ku, Kyoto 612-8501, Japan
Phone: [phone]
Fax: [phone]
http://www.kyocera.com/
KYOCERA Solar, Inc.
7812 East Acoma Drive, Scottsdale, AZ 85260, U.S.A.
Phone: [phone] or 1-800-223-9580
Fax: [phone]
http://www.kyocerasolar.com/
KYOCERA Solar Pty Ltd.
Level 3, 6-10 Talavera Road, North Ryde NSW 2113, Australia
Phone: [phone]
Fax: [phone]
http://www.kyocerasolar.com.au/
KYOCERA Solar do Brasil Ltda.
Av. das Americas, 20007 – Bloco 2 – Salas (rooms) 105 to 108,
Rio de Janeiro, 22790-851, Brazil
Phone: [phone]
Fax: [phone]
http://www.kyocerasolar.com.br

12. SPECIFICATIONS
・ Under certain conditions, a photovoltaic module may produce more voltage and current than reported at Standard Test
Conditions (STC). Refer to Section 690 of the National Electrical Code for guidance in series string sizing and choosing
overcurrent protection.
Module Specification
NOTES
(1) The electrical characteristics are within +/-5% (UL verified 10% tolerance, according to UL 1703) of the installed values of Pmax and
within +/-10% of the installed values of Isc and Voc under standard test conditions (irradiance of 1000W/m2, AM 1.5 spectrum, and a cell
temperature of 25 deg C).
(2) See module specification sheet for most recent electrical characteristics.
(3) See module drawing for mounting and grounding holes locations.
Electrical Characteristics: @ STC
Module Type KD240GX-LFB2 KD245GX-LFB2 KD250GX-LFB2
Pmax 240W 245W 250W
Voc 36.9V 36.9V 36.9V
Isc 8.59A 8.91A 9.09A
Vpm 29.8V 29.8V 29.8V
Ipm 8.06A 8.23A 8.39A
Factory installed Bypass Diode
Number 3pcs.
Series Fuse Rating 15A
Thermal Characteristics: Temp. Coefficient
Voc [V/°C] ([%/°C]) -1.33×10 -1 (-0.36) -1.33×10 -1 (-0.36) -1.33×10 -1 (-0.36)
I sc [A/°C] ([%/°C]) 5.15×10-3 (6.0×10-2) 5.35×10-3 (6.0×10-2) 5.45×10-3 (6.0×10-2)
Vpm [V/℃] ([%/°C]) -1.54×10 -1 (-0.52) -1.55×10 -1 (-0.52) -1.55×10 -1 (-0.52)
Physical Characteristics:
Length 65.43”(1662mm)
Width 38.98” (990mm)
Depth 1.81” (46mm)
Weight 44.1 lb(20.0 kg)
Mounting Hole Slotted hole .35×.37”(9×9.5mm), Quantity 4
Grounding Hole
(Back side hole) Diameter .28”(7mm) , Quantity 4 / Diameter .19”(4.7mm), Quantity 4
Grounding Hole
(Side hole) Diameter .16”(4mm), Quantity 4
Application Class Class A

SECTION A-A
MODULE DIMENSIONS
SECTION B-B
1.81"
1.81"
0.41"
0.47"
1.30"
0.79"
38.98"
65.43"
11.06" 43.31"
A
A
B
GROUND HOLE
(4-0.19" [TYP.])
B
2.CONTINUOUS CLAMPING AREA
38.98"
GROUND HOLE
(4-0.28" [TYP.])
Enlarged detail
MOUNTING HOLE
slotted hole [TYP.]
4-0.35"x0.37"
0.37"
0.35"
Enlarged detail(slotted hole)
0.020"
MARKED
■The PV modules can be installed in either an upright or landscape position.
3.94" 7.87"
11.06"43.31"
38.98"
5.91" 5.91"
1.CLAMPING AREA PERMISSIBLE CLAMPING RANGE
K D 2 4 0 G X - L F B 2 , K D 2 4 5 G X - L F B 2 , K D 2 5 0 G X - L F B 2
43.31"
3.94"7.87"
11.06"
Enlarged detail
C
C
SECTION C-C
0.063"
1.47"
1.54"
LENGTH
37.80"
WIRE
46.85"
WIRE
LENGTH
(-)(-)
(+)(+)
43.31"
3.94"3.94"
11.06"
3.94" 3.94"
0.48" 38.01" (0.48")
GROUND HOLE
MARKED
(4-0.16" [TYP.])
Enlarged detail
65.43"