INSTALLATION INSTRUCTIONS
PHOTOVOLTAIC MODULE
1.INTRODUCTION
• BEFORE INSTALLATION, OPERATION, AND MAINTENANCE, BE SURE TO READ THESE INSTRUCTIONS IN ORDER TO USE
THE PV MODULES SAFELY.
• FOR INSTALLATIONS IN THE USA, REFER TO THE NATIONAL ELECTRIC CODE (NEC) AND ALL APPLICABLE LOCAL CODES.
FOR INSTALLATIONS IN CANADA, REFER TO THE CANADIAN ELECTRIC CODE (CEC) AND ALL APPLICABLE LOCAL CODES.
•
FAILURE TO OBSERVE THE FOLLOWING INSTRUCTIONS MAY RESULT IN DEATH OR PERSONAL INJURY AND PROPERTY DAMAGE.
• KEEP THIS MANUAL FOR FUTURE REFERENCE.
En-1
WARNING
1. GENERAL USE
• Avoid touching the front surface of the module with bare
hands.
• DO NOT handle except for installation and maintenance.
• Ensure that unauthorised personnel, including children,
are not allowed to access the modules.
2. GENERAL HANDLING
• DO NOT alter or remove any component.
• DO NOT stand or step on the modules.
• DO NOT damage the front or rear surface of the PV
modules. The rear surface can be damaged by sharp
objects.
• DO NOT throw or drop the PV modules.
• DO NOT lift the modules by the connectors or cables.
3. INSTALLATION
• Only licensed professionals should handle the modules.
• Secure yourself to avoid falling from the installation area.
• DO NOT use damaged PV modules.
A damaged PV module may cause fire and/or an
electrical shock resulting in personal injury or even
death.
• DO NOT expose the PV modules to artificially
concentrated sunlight.
• Cover the front surfaces of the PV modules with an
opaque cloth to prevent the generation of high voltage
and electric current during installation.
• Securely fasten the PV modules to the mounting
framework to prevent them from falling due to wind or
snow loads. The modules should be installed as
instructed in this installation manual.
• Securely ground the PV module frame and the mounting
framework following local regulations.
• Install a residual current device (RCD) as prescribed by
local regulations.
• DO NOT expose the backside of the module to sunlight.
• DO NOT install the modules in places where they can be
shaded by objects such as buildings or trees.
ELECTRICAL SPECIFICATIONS
The electrical characteristics are within ±10% of the indicated values of Isc, Voc, and within +5/-0% of Pmax under
standard test conditions (irradiance of 1000 W/m
2
, AM1.5 spectrum, and a cell temperature of 25°C (77°F)).
Standard: IEC61215 ed. 2 (2005), IEC61730 ed. 1 (2004) Application Class A, UL1703
MODEL
PV-MJE265FB
PV-MJE270FB
Pmax
265 W
270 W
Voc
38.0 V
38.2 V
Isc
9.10 A
9.23 A
Vmp
30.9 V
31.1 V
Imp
8.59 A
8.69 A
*1 [A]
15
15
*2 [A]
12.5
12.5
MAXIMUM SYSTEM VOLTAGE
ETL LISTED
CONFORMS TO STANDARD UL 1703
CERTIFIED TO ULC ORD C1703
*1 FUSE RATING BASED ON MAX. BYPASS DIODE AMPACITY WITHIN THE PV MODULE
*2 MINIMUM BYPASS DIODE RATING
*3 +5/-0% OF NOMINAL VALUE
SYMBOL DEFINITIONS
Pmax
Voc
Isc
Vmp
Imp
MAXIMUM POWER
OPEN CIRCUIT VOLTAGE
SHORT CIRCUIT CURRENT
MAXIMUM POWER VOLTAGE
MAXIMUM POWER CURRENT
TOLERANCE *3 - - - - - -
1000V
(IEC61215,IEC61730,UL1703)
-
2-3-2. Mounting using the "Clipping method"
"The clipping method" is a way to secure modules on steady
base profiles (rail structures. etc.,) with "clipping" materials to
hold the top of the frame, without directly securing it with bolts
and nuts on the back of the module.
Mitsubishi Electric Corp.
doesn't specify or
warrant any materials,
e.g. base profile and
clipping materials etc.,
related to the clipping
method.
• The base profile should be perpendicular to the longer side
of the module (see figure below).
• The
•
Refer to the figure for the proper attachment.
• Secure the clips using M6 (1/4”) or larger (M8 (5/16”)) bolts
for where heavy snow loads are expected.
• Make to use clips that reach at least 5mm in from the edge
of the module frame.
• Use clipping material with sufficient strength and proper
form that can withstand forces from wind pressure and
snowfall pressure specific to the local climate.
• Secure bolts with the appropriate torque to avoid
deformation of the module frame.
• Take precaution in utilizing locking fasteners to avoid
loosening of the panel from its original anchored position.
• Note that the drainage holes at each corner of module
should not be blocked by the base profile.
En-2
2-3. MOUNTING
• Use mounting framework that can withstand forces from wind
pressure and snowfall pressure specific to your local climate.
• Use mounting framework and brackets that can withstand the
environment where the PV modules are to be used. Select
proper corrosion resistant materials and coatings.
• Use appropriate safeguards and components to install the
modules.
• PV modules shall be mounted over a fire resistant roof
covering rated for the application and on any slope less than
5in/ft (127mm/305mm) to maintain a fire Class rating.
• Installing the modules at an angle less than 2°can result in
decreased module output due to dirt and dust accumulating
on the module surface.
• Make sure there is enough space for air circulation behind
the PV modules to dissipate heat.
• DO NOT open any additional holes in the modules.
• The module is Type 2 of Fire Performance.
2-3-1. Mounting using bolt holes
Mounting examples:
• Fasten the corner holes of the PV module with M8 (5/16”)
stainless steel bolts to the mounting framework with a
torque of 4.5 to 6N·m (3.3 to 4.4 ft-lb).
•
Use spring washers and flat washers to fasten the PV module as
shown in figure1.
• Install the PV module securely
by fastening the appropriate
bolts with double nuts and
locking washers.
• Make sure that there is more
than a 5 mm gap between
modules to prevent buckling
caused by thermal expansion.
CAUTION
WARNING
2.INSTALLATION
Refer to Local Code (US: National Electrical Code) standards,
construction rules and safety instructions regarding installation
of the PV modules.
Electrical installations in Canada shall be in accordance with
CSA. C22. 1, Safety Standard for Electrical Installations,
Canadian Electrical Code, Part1.
2-1. CLIMATE CONDITIONS
Install the PV module within the following conditions:
•
Ambient monthly mean temperature: -20°C to 40°C (-4 to 104 °F)
• Operating temperature: -30°C to 83°C (-22 to 181 °F)
• Allowable pressure: up to +2400/-3000Pa
• Water resistance/damage: The PV modules shall not be
immersed in water and shall not be continually exposed to
a source of water, such as a sprinkler, fountain, etc.
• Corrosion warning: The PV modules shall not be installed in
corrosive areas such as:
-- Salty areas: areas where salty water such as ocean
spray comes in direct contact with the module, or
-- Sulfurous areas: areas near sulfurous volcanos and
sulfurous springs.
Note
In case of installation in Asian countries, PV modules shall
not be installed in corrosive areas within 500m from a body
of salt water and/or areas where there is direct contact with
salty wind.
2-2. ORIENTATION
• Install the PV modules facing South in the Northern
Hemisphere or North in the Southern Hemisphere.
• PV modules connected in series should be installed in the
same orientation and angle. Different orientation or angles
may cause loss of output power due to the different
amount of sunlight being absorbed by the modules.
• Do not allow the modules to be shaded at anytime.
Shade causes loss of electrical output, even though the
factory fitted bypass diode will reduce such loss to some
extent.
1-2. MULTIPLYING FACTOR
Under normal conditions, the PV module is likely to experience conditions that produce more current and/or voltage than reported
under Standard Test Conditions. Accordingly, the values of Isc and Voc marked on this module should be multiplied by a factor of
1.25 when determining component voltage ratings, conductor capacities (cross sectional area), fuse sizes, and size of controls
connected to the PV output. Customers in US should refer to article 690.8 the National Electrical Code for an additional multiplying
factor of 125 percent (80 percent derating), which may be applicable. Customers in other locations should refer to the codes relevant to
the location of installation for further guidance. Voc should be increased by a factor based on the lowest ambient temperature
recorded for the location. To determine the corrected value for Maximum System Voltage follow the guidelines in article 690.7 of the
NEC or applicable section in the CEC. The voltage temperature coefficient for the module in use should be used when determining
Maximum System Voltage.
1-1. STRUCTURE
Fig. 1 Module mounting
2-4. GROUNDING
• The grounding method should satisfy the Local Codes and
the NEC or CEC accordingly.
• Securely ground the PV modules and the mounting
framework.
Examples of proper grounding technique:
2 Nuts
(Stainless steel, 5/16(M8))
Spring washer
(Stainless steel, 5/16)
Flat Washer
(Stainless steel, 5/16)
Mounting structure
(Alminium)
Flat Washer
(Stainless steel, 5/16)
Bolt
(Stainless steel, 5/16(M8))
E(4 PLACES)
Drainage holes
15[0.59]
20[0.79]
6[0.24]
35[1.38]
1657[65.2]
1000[39.4]
1200[47.2]
1199[47.2]
994[39.1]
46[1.81]
A A
B
B
C
φ4.09[φ0.16](4 PLACES)
6[0.24]×20[0.79](4 PLACES)
φ4.09[φ0.16](4 PLACES)
φ9[φ0.35](4 PLACES)
D
E
(+)(–)
994 (39.1)
φ9[φ0.35]
21.5[0.85]
30[1.18]
46[1.81]
φ4.09
[φ0.16]
D(4 PLACES)
φ4.09
[φ0.16]
Grounding Mark
25.3[1.00]
Grounding Mark
25.3[1.00]
C(4 PLACES)
A−A
B−B
24.5[0.96]
2-3-2. Mounting using the "Clipping method"
"The clipping method" is a way to secure modules on steady
base profiles (rail structures. etc.,) with "clipping" materials to
hold the top of the frame, without directly securing it with bolts
and nuts on the back of the module.
Mitsubishi Electric Corp.
doesn't specify or
warrant any materials,
e.g. base profile and
clipping materials etc.,
related to the clipping
method.
• The base profile should be perpendicular to the longer side
of the module (see figure below).
• The
module shall be attached at 4 points or more on the frames.
•
Refer to the figure for the proper attachment.
• Secure the clips using M6 (1/4”) or larger (M8 (5/16”)) bolts
for where heavy snow loads are expected.
• Make to use clips that reach at least 5mm in from the edge
of the module frame.
• Use clipping material with sufficient strength and proper
form that can withstand forces from wind pressure and
snowfall pressure specific to the local climate.
• Secure bolts with the appropriate torque to avoid
deformation of the module frame.
• Take precaution in utilizing locking fasteners to avoid
loosening of the panel from its original anchored position.
• Note that the drainage holes at each corner of module
should not be blocked by the base profile.
En-3
CAUTION
5mm min.
Frame (longer side)
bolt
Clipping material
Framework (base profile)
Module
(in principle)
Fig. 5 Grounding method #3
2-4-1. Method #1 (use of self-tapping screws)
• Install a stainless steel screw (M5 or No.10) with 32 threads
per inch to the grounding hole with a torque of 2.3N·m
(20lbf-in).
• Ensure that at least 2 threads are engaged in the module
frame.
• As shown in the figure 3, the copper wire should be
compressed by the screw head.
• A stainless steel washer with an appropriate corrosion
resistant coating should be inserted between the copper
wire and screwhead.
• A proper cupped washer should be inserted between the
copper wire and frame to avoid galvanic corrosion.
• The copper wire must be #14 AWG or thicker, and be
secured to the module frame.
Fig. 3 Grounding method #1
2-4-2. Method #2 (use of a ground lug)
• An appropriate device such as UL Listed ILSCO ground lug,
Cat. No. GBL4-DBT should be secured by a stainless steel
screw (M5 or No.10) with 32 threads per inch with a torque
of 2.3N·m (20lbf-in) as shown in the figure 4.
• A star or toothed washer shall be inserted between the
ground lug and module frame.
• The copper wire must be #14 AWG or thicker, and be
secured to the ground lug screw.
Fig. 4 Grounding method #2
2-4-3. Method #3 (use of bolts and nuts)
• A No.8 stainless steel bolt and nut with 32 threads per inch
can be used instead of a No.10 self-tapping screw in
Method #2 under the following conditions:
- Torque to secure the bolt: 1.8N·m (16lb-in)
- A lock or spring washer shall be inserted between the
nut and toothed washer.
Fig. 2 Clipping method
Required mounting area to be fixed
2-4. GROUNDING
• The grounding method should satisfy the Local Codes and
the NEC or CEC accordingly.
• Securely ground the PV modules and the mounting
framework.
Examples of proper grounding technique:
WARNING
Stainless steel washer
(#10)
Self-tapping screw
(Stainless steel, #10-32TPI)
Cupped washer
Copper wire (14AWG or thicker)
Module frame
(Stainless steel)
Copper wire
(14AWG or thicker)
(Stainless steel)
Stainless steel washer(#10)
Cupped washer
Module frame
Self-tapping screw
(Stainless steel, #10-32TPI)
Self-tapping screw
(Stainless steel, #10-32TPI)
Copper wire
(14AWG or thicker)
Toothed washer
(Stainless steel, #10)
Grounding lug
(ex. ILSCO GBL4-DBT)
Copper wire
(14AWG or thicker)
Grounding lug
(ex. ILSCO GBL4-DBT)
Self-tapping screw
(Stainless steel, #10-32TPI)
Toothed washer
(Stainless steel, #10)
Bolt
(Stainless steel, #8)
Nut (Stainless steel, #8)
Grounding lug
(ex. ILSCO GBL4-DBT)
Spring washer
(Stainless steel, #8)
Copper wire
(14AWG or thicker)
Toothed washer
(Stainless steel, #8)
Mounting area (4 places)
Framework (base profile)
up to +2400/-3000Pa
up to +2000/-2400Pa
up to +2000/-2000Pa
1657 (65.2)
594 (23.4)
994 (39.1)
600 (23.6)
900 (35.4)
1400 (55.1)
INSTALLATION INSTRUCTIONS
PHOTOVOLTAIC MODULE
1506876HC2701
All Rights Reserved. Copyright ©2015: MITSUBISHI ELECTRIC CORPORATION
Printed in Japan
1.INTRODUCTION
• BEFORE INSTALLATION, OPERATION, AND MAINTENANCE, BE SURE TO READ THESE INSTRUCTIONS IN ORDER TO USE
THE PV MODULES SAFELY.
• FOR INSTALLATIONS IN THE USA, REFER TO THE NATIONAL ELECTRIC CODE (NEC) AND ALL APPLICABLE LOCAL CODES.
FOR INSTALLATIONS IN CANADA, REFER TO THE CANADIAN ELECTRIC CODE (CEC) AND ALL APPLICABLE LOCAL CODES.
•
FAILURE TO OBSERVE THE FOLLOWING INSTRUCTIONS MAY RESULT IN DEATH OR PERSONAL INJURY AND PROPERTY DAMAGE.
• KEEP THIS MANUAL FOR FUTURE REFERENCE.
En-4
1. GENERAL USE
• Avoid touching the front surface of the module with bare
hands.
• DO NOT handle except for installation and maintenance.
• Ensure that unauthorised personnel, including children,
are not allowed to access the modules.
2. GENERAL HANDLING
• DO NOT alter or remove any component.
• DO NOT stand or step on the modules.
• DO NOT damage the front or rear surface of the PV
modules. The rear surface can be damaged by sharp
objects.
• DO NOT throw or drop the PV modules.
• DO NOT lift the modules by the connectors or cables.
3. INSTALLATION
• Only licensed professionals should handle the modules.
• Secure yourself to avoid falling from the installation area.
• DO NOT use damaged PV modules.
A damaged PV module may cause fire and/or an
electrical shock resulting in personal injury or even
death.
CAUTION
WARNING
• Connect the required number of PV modules to meet the
voltage specification of the equipment used in the system.
- Max. in series: 20pcs due to max. system voltage
- Max. in parallel: 2 strings due to fuse rating
• Connect the output cable connectors so that they do not
exert any strain on the base of the cable at the junction box.
Secure the cable to the mounting framework using approved
fasteners.
The connectors should be placed behind the mounting
framework so that the connectors are not directly exposed to
sunlight, wind or rain.
• DO NOT apply external force (stepping on, etc.) to the
connector.
• The PV module has a pair of male and female waterproof
connectors. For an electrical connection in series, connect
the positive (+) connector of the first PV module to the
negative (-) connector of the following module.
• These modules employ UL Recognized connectors for output
wiring. Final output field wiring should be done with
CCT9901-3301F (R51-27) (male), CCT9901-3511F (R51-27)
(female) connectors from SMK using minimum 14 AWG
copper wire cables rated for 90°C (194°F).
These products provide final system output wiring in
accordance with the U.S. National Electrical Code, NFPA
70-2008 or CEC accordingly.
Please refer to Article 690 of the NEC for additional guidance.
• To extend the cable, use proper commercial cables and
connectors rated for at least 1000V that can withstand
outdoor use for long periods. Select the appropriate cable
size according to its length to avoid excessive voltage drop.
Follow the cable manufacturer's instructions.
3.MAINTENANCE
• Maintenance must be done only by qualified personnel.
• Be sure the circuit breaker is switched off, if applicable.
Always use appropriate safety equipment (insulated tools,
insulating gloves, etc.).
• Be sure to cover the front surface of the PV modules with an
opaque cloth to block sunlight when connecting or
disconnecting modules.
ANNUAL INSPECTION
• Check if the nuts and bolts of the mounting framework are
secure. Tighten all loose components.
• Check the connections of cables, including grounding cables
and connectors.
• Check that all electrical and mechanical connections are
free of corrosion.
• Check the ground resistance of metal parts such as the
module frames and the mounting framework.
Others
• Clean the glass surface of the modules when dirty. (Wash
or wipe only the glass surface of module without using
detergent.)
2-4-4. Method #4 (use of the bolts and nuts in the mounting hole)
• All hardware used in this method must be stainless steel.
- Examples of
acceptable grades of
stainless steel are:
18-8, 316, and 410.
• A 1 1/4” bolt and double
nuts of No.5/16 diameter
(or M8) shall be used to
mount the PV module to
the mounting structure
through the 9mm
diameter mounting hole.
• Torque to secure the bolt:
5N·m (3.7 ft-lb)
• External toothed stainless steel washers shall be inserted
between the module frame and ring washer, and also
between the mounting structure and ring washer.
• A spring washer shall be used to avoid loosening of the bolt.
• All 4 mounting holes of each PV module must be secured to
the mounting structure.
• At least 2 of the 4 locations must have external toothed
washers.
• All four locations shall have 2 nuts installed.
• A grounding electrode system for the mounting structure
must be provided in accordance with the NEC or CEC
standards.
• Recommended mounting structure characteristics:
- Alloys with resistivity less than 1.61 micro-ohms / inch
- Wall thickness of at least 1/8”
2-4-5. Method #5 (WEEB clips/ barbed washers and associated
racking)
• Barbed washers listed under UL467 intended for use in
bonding photovoltaic modules to mounting structures may
be used for grounding as described in the NEC or CEC
standards.
• When installing the WEEB UMC Clip or UniRac UGC-1 Clip
as a means of grounding the modules, tighten the mounting
bolt to 13.5N·m (10lb-ft).
• Barbed washers identified for grounding must be installed in
accordance with the manufacturer's specified instructions.
• Recommended mounting structures that accommodate
barbed washers are manufactured by UNIRAC.
• Approved options of WEEB clips/ barbed washers to be
used in conjunction with UNIRAC racking solution are:
o WEEB UMC clip
o UNIRAC UGC-1 clip
Note: Barbed washers are intended for one time use only.
If a module is removed, replaced, repositioned or
remounted, the associated barbed washer(s) must be
replaced. Follow instructions of the manufacturer.
ELECTRICAL SPECIFICATIONS
The electrical characteristics are within ±10% of the indicated values of Isc, Voc, and within +5/-0% of Pmax under
standard test conditions (irradiance of 1000 W/m
Standard: IEC61215 ed. 2 (2005), IEC61730 ed. 1 (2004) Application Class A, UL1703
2-5. WIRING
• DO NOT short the positive and
negative cables.
• Make sure connectors are fully
engaged and locked without any
gap between the insulators. In
case there is a gap, a fire and/or
an electrical shock may occur.
• Use the appropriate tool provided by SMK for disconnecting.
WARNING
Fig. 6 Grounding method #4
2 Nuts (Stainless steel, 5/16(M8))
Ring washer
(Stainless steel, 5/16)
Toothed Washer
(Stainless steel, 5/16)
Mounting structure (Alminium)
Toothed Washer
(Stainless steel, 5/16)
Ring washer
(Stainless steel, 5/16)
Spring washer (Stainless steel, 5/16)
Bolt (Stainless steel, 5/16 (M8))
* 8 7 6 H C 2 7 0 1 *
*1 FUSE RATING BASED ON MAX. BYPASS DIODE AMPACITY WITHIN THE PV MODULE
*2 MINIMUM BYPASS DIODE RATING
*3 +5/-0% OF NOMINAL VALUE
SYMBOL DEFINITIONS
Pmax
Vmp
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