Yingli Solar YL300P-35b User manual

Yingli Solar PV Modules, Installation and User Manual
page 1
This manual applies to photovoltaic modules (“PV modules”,
also commonly known as solar panels) manufactured by
Yingli Green Energy Holding Co. Ltd. (“Yingli Solar”), and
is explicitly written for qualified professionals (“Installer”
or “Installers”), including without limitation licensed
electricians and RAL Certified PV Installers.
INTRODUCTION
Thank you for choosing Yingli Solar as your PV module provider. We
appreciate your business! This manual contains important information
pertaining to the electrical and mechanical installation and maintenance
of PV modules, and contains safety information that you must read carefully
and be familiar with before handling, installing, and/or maintaining Yingli Solar
PV modules.
Yingli Solar does not assume responsibility and expressly disclaims liability for
losses, damages, or expenses arising out of, or in any way connected with this
Installation and User Manual. Yingli Solar assumes no responsibility for any
infringement of patents or other rights of third parties, which may result from
using Yingli Solar PV modules. No license is granted expressly or by implication
or under any patent or patent rights. The information in this manual is believed
to be reliable, but does not constitute an expressed or implied warranty. Yingli
Solar reserves the right to make changes to its PV modules and other products,
their specifications, or this manual without prior notice.
Yingli Solar and its subsidiaries are not liable for any damages caused by
inappropriate installation, use, or maintenance of Yingli Solar PV modules,
including without limitation damages, losses, and expenses caused by non-
observance of the instructions of this manual or caused by or in connection with
products of other manufacturers.
Yingli Solar PV modules are designed to meet the requirements for the standards
IEC 61215 and IEC 61730, application class A. Modules rated for use in this
application class may be used in systems operating at greater than 50 V DC
or 240 W, where general contact access is anticipated. Modules qualified for
safety through IEC 61730-1 and IEC 61730-2 and within this application class are
considered to meet the requirements for safety class II. In the course of the PV
module certification process, the compliance of this manual with the certification
requirements has been verified by an independent certification laboratory.
This Installation and User Manual is available in dierent languages. In cases of
discrepancy between versions, the English language version shall control.
Failure to comply with the requirements listed in this manual will invalidate the
Limited Warranty for PV Modules as provided by Yingli Solar at the time of sale
to the direct customer. Additional recommendations are provided to enhance
safety practices and performance results. Please provide a copy of this manual
to the PV system owner for their reference, and inform them of all relevant
aspects of safety, operation, and maintenance.
SAFETY
General
You must understand and follow all applicable local, state, and federal
regulations and standards for building construction, electrical design, fire,
and safety, and must check with local authorities to determine applicable
permitting requirements before attempting to install or maintain PV modules.
Rooftop PV systems should only be installed on dwellings that have been
formally analyzed for structural integrity, and confirmed to be capable
of handling the additional weighted load of PV system components,
including PV modules, by a certified building specialist or engineer.
For your safety, do not attempt to work on a rooftop until
safety precautions have been identified and taken, including
without limitation fall protection measures, ladders or
stairways, and personal protective equipment (PPE).
For your safety, do not install or handle PV modules under adverse conditions,
includingwithoutlimitationstrongorgustywinds,andwetorfrostedroofsurfaces.
The flat-plate PV module construction consists of a laminated assembly
of solar cells encapsulated within an insulating material with a rigid
glass surface and an insulated substrate. The laminated assembly is
supported by an aluminum frame that is also used for mounting the
module. See Figure 1 for an illustration of the PV module components.
Figure 1: Module components and cross-section of the laminated assembly
Electrical
PV modules can produce current and voltage when exposed to
light of any intensity. Electrical current increases with higher
light intensity. DC voltage of 30 Volts or higher is potentially
lethal. Contacting the live circuitry of a PV system operating
under light can result in lethal electric shock.
Junction Box
Cable
Connector
Cell
Frame
1
1. Aluminum Frame
2. Glass
3. Encapsulating EVA
4. PV Cell
5. Backsheet
2
3
5
4
YINGLISOLAR.COM
YINGLI SOLAR PV MODULES
Installation and User Manual
Revision Date Apr 19th, 2016 | Applicable for IEC certified products
File name: Corporate Logo with Tagline / Vertical.ai

Yingli Solar PV Modules, Installation and User Manual
page 2
De-energize PV modules by removing them entirely from light or by covering
their front surface with an opaque material. Regard the safety regulations for
live electrical equipment when working with modules that are exposed to any
light. Use insulated tools and do not wear metallic jewelry while working with
PV modules.
In order to avoid arcing and electrical shock, do not disconnect electrical
connections under load. Faulty connections can also result in arcing and
electrical shock. Keep connectors dry and clean, and ensure that they are in
proper working condition. Never insert metallic objects into the connectors, or
modify them in any way in order to secure an electrical connection.
Do not touch or handle PV modules with broken glass, separated frames or
a damaged backsheet unless the PV modules are first disconnected and you
are wearing proper PPE. Avoid handling PV modules when they are wet unless
cleaning the PV modules as directed in this manual. Never touch electrical
connections that are wet without protecting yourself with insulated gloves.
Transport and Handling
Yingli Solar PV modules must be transported in the supplied packaging only and
kept in the packaging until they are ready to be installed. Protect pallets against
movement and exposure to damage during transportation. Secure pallets from
falling over. Do not exceed the maximum height of pallets to be stacked, as
indicated on the pallet packaging. Store pallets in a cool and dry location until
the PV modules are ready to be unpackaged.
Figure 2: Pallet of PV modules
Yingli Solar PV modules are heavy, and should be handled with care. PV modules
shall be handled at the frame; never use the junction box or cables as a grip. Do
not exert mechanical stress on the cables. Never step on PV modules or drop
or place heavy objects on them. Be careful when placing PV modules on hard
surfaces, and secure them from falling. Broken glass can result in personal injury.
PV modules with broken glass cannot be repaired and must not be used. Broken
or damaged PV modules must be handled carefully and disposed of properly.
For unpacking PV modules from the Yingli Solar supplied packaging, first remove
the pallet lid (after removing securing straps, if provided). Remove PV modules
one at a time by sliding them up the channel in the package (see Figure 3). You
may need to secure the remaining PV modules in the pallet packaging to prevent
them from falling over.
Figure 3: Removing PV modules from a pallet
Check PV modules for damage due to transportation before they are installed;
do not install damaged modules. Contact the company you purchased the Yingli
Solar PV modules from in order to obtain information on making claims for
defective PV modules.
PV module surfaces are susceptible to damage that could aect the performance
or safety of the PV module; do not damage or scratch the PV module surfaces,
and do not apply paint or adhesive to any of the surfaces, including the frame.
For your safety, do not disassemble or modify Yingli Solar PV modules in any
way. Doing so may degrade performance or cause irreparable damage and will
void any applicable warranties.
If it is necessary to store PV modules prior to installation, the PV modules
should remain inside the packaging and protected from exposure that could
compromise the durability of the packaging.
Fire
Yingli Solar PV Modules have a Class C fire resistance rating in accordance with
the IEC 61730-2 certification. When PV modules are mounted on rooftops, the
roof must have a fire resistant covering suitable for this application. PV modules
are electrical generating devices that may aect the fire safety of a building.
The use of improper installation methods and/or defective parts may result
in the unexpected occurrence of an electrical arc during operation. In order to
mitigate the risk of fire in this event, PV modules should not be installed near
flammable liquids, gases, or locations with hazardous materials.
In the event of a fire, PV modules may continue to produce a dangerous voltage,
even if they have been disconnected from the inverter, have been partly or
entirely destroyed, or the system wiring has been compromised or destroyed. In
the event of fire, inform the fire crew about the particular hazards from the PV
system, and stay away from all elements of the PV system during and after a fire
until the necessary steps have been taken to make the PV system safe.
APPLICATION INFORMATION
Application Restrictions
Yingli Solar PV modules must be mounted on appropriate mounting structures
positioned on suitable buildings, the ground, or other structures suitable for PV
modules (e.g. carports, building facades or PV trackers). PV modules must not
be mounted on moving vehicles of any kind. Yingli Solar PV modules must not
be installed in locations where they could be submerged in water.
Yingli Solar PV modules must not be sited in locations where aggressive
substances such as salt or salt-water, or any other type of corrosive agent, could
aect the safety and/or performance of the PV modules. Although some types
of Yingli Solar PV modules have passed the IEC 61701 salt-mist corrosion test
with a salt concentration of 5% by weight, galvanic corrosion can occur between
the aluminum frame of the PV module and mounting or grounding hardware if
such hardware is comprised of dissimilar metals. Yingli Solar recommends that
only stainless steel and aluminum metal directly contact PV modules in seaside
installations to limit corrosion.
Artificially concentrated light must not be directed on Yingli Solar PV modules.
Design Recommendations
Yingli Solar recommends that PV modules be mounted at a minimum tilt angle
of 10 degrees to allow for proper self-cleaning from normal rain showers.
Partial or complete shading of a PV module or modules can significantly reduce
system performance. Yingli Solar recommends minimizing the amount of shade
throughout the year to increase the amount of energy produced by the PV
modules.
Lightning protection is recommended for PV systems that are to be installed in
locations with high probability of lightning strikes.
High system voltages could be induced in the event of an indirect lightning
strike, which could cause damage to PV system components. The open area of
wire loops should be minimized, as shown in Figure 4, in order to reduce the risk

Series wiring (voltage additive)
Parallel wiring (current additive)
Fully engage and lock
Cap
+–

Yingli Solar PV Modules, Installation and User Manual
page 4
Figure 7: Electrical circuitry of cells and bypass diodes
In the event of a known or suspected diode failure, installers or maintenance
providers should contact the company the PV modules were purchased from.
Never attempt to open the junction box of a Yingli Solar PV module yourself.
PV Array Grounding
For optimal performance, Yingli Solar recommends that the negative pole of the
PV array be connected to ground.
Equipment Grounding
The frame of the PV module, as well as any exposed non-current-carrying metal
parts of fixed equipment that are able to become energized by the PV system,
must be connected to the equipment grounding conductor (EGC) in order to
prevent electrical shock. Even when applicable regulations, code requirements,
and standards do not require safety-related grounding, Yingli Solar recommends
grounding all PV module frames in order to ensure the voltage between
electrically conductive equipment and earth ground is zero in all circumstances.
Proper equipment grounding is achieved by bonding all exposed non-current-
carrying metal equipment continuously to one another using an appropriately
sized EGC or racking system that can be used for integrated grounding (see
Option B in Grounding Methods below).
Yingli Solar PV modules employ a coated aluminum frame for corrosion
resistance. In order to properly ground the module frame, the coating must be
penetrated.
The potential for corrosion due to the electrochemical action between dissimilar
metals in contact is minimized if the electrochemical voltage potential between
the dissimilar metals is low. The grounding method must not result in the direct
contact of dissimilar metals with the aluminum frame of the PV module that
will result in galvanic corrosion. An addendum to UL Standard 1703 “Flat Plate
Photovoltaic Modules and Panels” recommends metal combinations not exceed
an electrochemical potential dierence of 0.5 Volts.
The frame rails have pre-drilled holes marked with a grounding sign, as
illustrated in Figure 8. These holes should be used for grounding purposes and
must not be used for mounting the PV modules. Do not drill additional holes
into the frame rails.
Figure 8: Grounding hole detail
The following grounding methods are available:
Option A: Screw Assembly (see Figure 9)
1. A grounding screw assembly must be attached at a designated grounding
hole location using only stainless steel hardware. Insert an M5 stainless
steel screw first through the stainless steel cup washer, and then through the
grounding hole.
2. Loosely engage a stainless steel backing nut and toothed lock washer to the
screw.
Figure 9: Grounding screw assembly detail
3. Bend the EGC into an omega (Ω) shape to tightly fit between the partially
installed screw head and cup washer. The EGC shall be exclusively in contact
with stainless steel.
4. Tighten the screw to 2.3 N∙m torque. The toothed lock washer should be
visibly engaged to the frame.
5. Route the appropriately sized EGC in such a way as to avoid contact with the
aluminum module frame.
Option B: Racking Manufacturer Integrated
Grounding Methods
Yingli Solar PV modules can be grounded by bonding PV modules to a grounded
racking system. Integrated grounding methods must be certified for grounding
PV modules and must be installed in accordance with the specified instructions
of their respective manufacturers.
Option C: Additional Third-party Grounding Devices
Yingli Solar PV modules can be grounded using third party grounding devices so
long as they are certified for grounding PV modules and the devices are installed
according to the manufacturer’s specified instructions.
MECHANICAL INSTALLATION
General
Yingli Solar PV Modules have been certified for a maximum static load on the
back of the module of up to 2400 Pa (i.e. wind load) and a maximum static load
on the front of the module of up to either 2400 Pa or 5400 Pa (i.e. wind and
snow load), depending on the module type (please refer to the data sheet for
this information).
Mounting structures and other mechanical parts must be designed and approved
to withstand the design wind and snow loads applicable for a particular site.
Yingli Solar PV modules must not be subjected to forces from the substructure,
including forces caused by thermal expansion.
The mounting method must not result in the direct contact of dissimilar
metals with the aluminum frame of the PV module that will result in galvanic
corrosion. An addendum to UL Standard 1703 “Flat Plate Photovoltaic Modules
and Panels” recommends metal combinations not exceed an electrochemical
potential dierence of 0.5 Volts.
Yingli Solar PV modules can be mounted in landscape or portrait orientation, as
illustrated in Figure 10, provided that the mounting method follows one of the
acceptable methods listed below.
Grounding Holes
ø0.236in (6mm)
PV Laminate
Backing Nut
Toothed Lock Washer or KEPS Nut
Cup Washer
Aluminum
Frame
Screw
Equipment
Grounding
Conductor

Landscape Orientation
Portrait Orientation
Screw
Backing Nut
Nut Washer
PV Laminate
Mounting Rail
Aluminum Frame