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-1
En-4
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.
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 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
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
ETL LISTED
CONFORMS TO STANDARD UL 1703
CERTIFIED TO ULC ORD C1703
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
Voc
Isc
Vmp
Imp
MAXIMUM POWER
OPEN CIRCUIT VOLTAGE
SHORT CIRCUIT CURRENT
MAXIMUM POWER VOLTAGE
MAXIMUM POWER CURRENT
TOLERANCE
*3
-
-
-
-
-
-
1000V
(IEC61215,IEC61730,UL1703)
-
