fotovoltaica

1. Global
Conformity
Assessment
of Photovoltaic
systems

2. Global Network and Relations
UL has a powerful global network of technical experts and state-of-the-art PV and
inverter laboratories with OSHA & CBTL accreditation, as well as longstanding relations
with regulatory authorities, partner laboratories and industry leaders.
Accelerated Go-To-Market Time
UL facilitates global market access through one investigation with bundled services –
to optimize project turnaround time, minimize administration and reduce project costs.
High Performance Partnerships
Thanks to powerful partnerships with entities such as Atlas Materials Testing
Technology (USA), CENER (Spain), EXOVA (Canada), Jet (Japan), KIER (Korea), NCKU
(Taiwan), SGEPRI (China),TERTEC (Taiwan),TIPS (China) and TTC (Taiwan), UL is able to
provide comprehensive local testing and certification services to further accelerate
global market access.
Safety, Performance and Quality Conformity
UL provides combined services for the entire PV system:
• PV Array and‘Balance of System’: PV Modules, Inverters, Fuses, Connectors, Polymeric
Materials, Roofing Materials, Concentrated PV, Mounting Systems, Solar Tracker, Solar
Collectors, Building Integrated PV,Wiring, Junction Boxes, Fuse Holders, Combiner Boxes,
Grounding Devices, Charge Controllers.
• Inverter Testing and Certification with dedicated laboratories in the USA and Europe.
• Single Test and sequence services program to support distributors and manufacturers
in research and development, prototype and design, reliability and verification testing.
PV Lab San Jose, CA
Inverter Lab Northbrook, Illinois
PV Lab Suzhou, China
PV Lab Bangalore, India
PV Lab Ise, Japan
PV Inverter Lab Zeppelinheim, Germany
On-Time
Market Access
for PV Equipment
and Inverters
UL is a world leader in
the safety, performance
and quality conformity of
PV systems. Established
as a safety certification
organization in the USA
in 1894, UL now operates
internationally with a
comprehensive range of
conformity assessment
service. By providing
multiple certifications from
one source, UL is positioned
to help manufacturers
quickly gain the compliance
credentials they need to
compete in the global
marketplace.

3. Applicable
Standards
• Photovoltaic (PV) modules and panels IEC 61215 (crystalline)
IEC 61646 (thin film)
IEC 61730
EN 61215 and EN 61730
EN 61646 and EN 61730
UL 1703
• Concentrator PV (CPV) modules and assemblies –
design qualification and type approval
IEC 62108 EN 62108 UL-SU 8703
• Building integrated PV (BIPV)
*1
Fire test
*2
Facades or building glass
UL 1703
UL 790*1
UL 1897
ANSI 97, 1-1984*2
• BIPV Mounting Systems UL 1703
UL 790
UL 997
UL-SU 2703
• Solar collectors UL-SU 1279
• Junction boxes UL 1703
• Inverters (incl. micro-inverters), converters, controllers and
interconnection system equipment for use with distributed
energy resources
UL 1741
• PV DC Arc-Fault Circuit Protection UL-SU 1699B
• Combiner boxes UL 1741
• Photovoltaic wire
*3
Service Entrance Cables
UL-SU 4703
UL 854*3
• Low-Voltage Fuses for PV Systems UL-SU 2579
• Fuse holder UL-SU 4248-18 /
ANSI-UL 4248-1
• PV connector
*4
AC Connectors and both AC and DC
UL-SU 6703
UL-SU 6703A*4
• Polymeric materials UL-SU 5703
UL 746A, 746B, 746C
• Enclosure Dead-Front Switches for use in PV Systems UL-SU 98B
UL 1741
• Molded-Case Circuit Breakers, Molded-Case Breakers
Circuit Breakers Enclosures for use with PV Systems
UL-SU 89B
• Procedures for temperature and irradiance corrections to
measured I-V characteristics of crystalline silicon PV
IEC 60891 (Devices
Amendment 1: 06-1992)
EN 60891
• Characteristic parameters of stand-alone PV systems IEC 61194 EN 61194
• UV test for PV modules IEC 61345 EN 61345
• Rating of direct coupled PV pumping systems IEC 61702 EN 61702
• Crystalline silicon PV array –
on-site measurement of I-V characteristics
IEC 61829 EN 61829
• Portable solar PV lanterns – blank detail specification.
Approval under the IEC system for conformity testing and
certification of electrical equipment (IECEE)
IEC PVRS11
• Portable solar PV lanterns – design qualification and type
approval. Amendment 1, extension to include lanterns with
nickel-metal hydride batteries
IEC PVRS11A
• Solar Trackers UL-SU 3703
• Rack Mounting Clamping Devices UL-SU 2703
• Mounting and wiring methods are evaluated with the PV
modules for impact resistance
UL 1703
UL-SU 2703
UL-SU 6703, 6703A
PV Modules
Testing and
Certification
UL 1703
IEC / EN 61215
IEC / EN 61646
IEC 61730 / UL 790 (fire test)
UL-SU 8703 (CPV)
BIPV
UL 1703
UL 790
UL 1897
Junction box
UL 1703
IEC 61730
Connector
UL-SU 6703
Fuse
UL-SU 2579
Fuse Holder
UL-SU 4248-18 /
ANSI-UL 4248-1
Batteries
UL 1989
UL 2054
UL-SU 2580
UL-SU 1973
PV cells
Cable for PV
UL 4703
UL 854 (USE-2)
Inverter + Micro-Inverter
UL 1741
Charge Controller
UL 1741
Output Wiring System
NFPA70 NEC
Combiner Box
UL 1741
Inverter
AC Loads
Grid tied or
stand alone
Batteries
Note: Many of these
components or functions
can be built into one
product like the inverter.
Combiner
Box
Charge
Controller
PV Modules
(with junction box)
Rack Mounting
Clamping Devices
UL-SU 2703
Solar Trackers
UL-SU 3703
Fire Test
UL 1703 / UL 790
(roof mounted modules)
Polymeric Materials
UL-SU 5703
UL 746A, 746B, 746C
Fire Safety
PV module fire testing is an integral part of the US safety architecture and UL
standards for safety, working closely with regulatory authorities, fire research
organizations and industry and government groups.
UL has over 100 years of world-wide experience in fire testing for the building,
construction and energy sectors and is actively involved in fire safety research and
knowledge transfer with industry stakeholders for building, structural, construction
materials and PV module fire testing.

4. Combined
Certification
Solutions
The IECEE CB Scheme is the world’s first truly international system for mutual
acceptance of test reports and certificates, dealing with the safety, performance and
quality of electrical and electronic components, equipment and products. It is based on
the use of International Stan­dards (IEC) and the mutual recognition of test results.
The UL EU Mark is the latest addition to the global family of UL marks, designed
to assist manufacturers in gaining European market access. It is based on applicable
EN standards and issued by UL exclusively. The UL EU mark also supports global
manufacturers in reducing their go-to-market time through combined testing and
certification efforts, based on working with one team and benefitting from associated
cost savings.
The UL Mark and the UL Recognized Component Mark are the most widely
recognized and accepted evidence of a product’s compliance with U.S. and Canadian
safety requirements. For consumers, installers/integrators and code and regulatory
authorities, the UL Mark is North America’s most valued product safety symbol based on
National Electrical Code (NEC).
Any end product carrying the UL Listing Mark reflects compliance to the corresponding
UL safety requirements. UL is the only Nationally Recognized Testing Laboratory (NRTL)
authorized to issue the UL Mark.
CEC Requirements (California Energy Commission): Flat-plate non-concentrating
photovoltaic modules require testing data from independent laboratories to ensure safety
and high-quality metrics on module and inverter performance in the field. This data is also
used to calculate the expected performance of the system. Eligible modules are listed
with the California Energy Commission.

5. The Certification
Process
We recommend that manufacturers start
with a preliminary investigation to
evaluate the product and determine the
level of compliance to regulatory
requirements, both UL and IEC. This
approach avoids major modifications,
hence, delay in time to market.
During the preliminary investigation,
UL evaluates whether the construction,
design and materials comply with the
relevant standards. The result of the
preliminary investigation is a detailed
report in a letter format, listing
non-compliant materials and structures
(if applicable). This provides the
manufacturer with the opportunity to
rectify any non-compliance issues, and
means that when it is time for the actual
certification process, the pre-assessment
phase will not be required again.
As part of the preliminary investigation
we can also provide:
• Gap analysis
• Material suitability
• Design review for certification
Once the manufacturer is ready to begin
the certification process and submits
the relevant documentation, i.e.,
product specifications, drawings, etc.,
UL engineers and lab technicians will
conduct a number of tests and evaluations
in accordance with the applicable
standards. This process will
be followed by an initial production
inspection (only applicable to factories
manufacturing UL certified PV products
for the first time) to confirm product
compliance. Upon confirmation of
compliance, UL will issue a Notice of
Authorization (NoA) to the manufacturer,
who can now apply the UL label to the
product and ship as UL Listed.
Preliminary Investigation Testing
A joint certification is the ideal option
for both safety and performance testing,
providing significant cost and time
savings. UL is a National Certification
Body (NCB) for the applicable standards
and is authorized to recognize and issue
CB Reports in accordance with the
requirements of the IEC standards.
Following certification, UL will perform
follow-up services (FUS) at the
manufacturing facility to ensure that the
products produced are represented by
the product evaluated. This step helps
identify issues in the supply chain such as
component or material substitutions and
maintains the high value of the UL Mark.
The product also enters UL’s Online
Certifications Directory, a valuable,
free-of-charge source used by
stakeholders looking for specific
products certified in accordance with the
requirements of UL Standards (available
at UL.com).
Certification Follow-Up Service Online Certifications Directory
While it is generally required that
certification testing is performed at
independent testing facilities, in some
cases manufacturers with adequate
internal testing capabilities may
qualify for data acceptance
arrangements. In nearly all programs,
product tests conducted at a
manufacturer’s test facilities will be
supervised by UL/CBTL staff. Find
out more at ul.com/dap about the
programs:
• Witness Data Program
• Client Test Data Program
• Total Certification Program
• Witnessed Manufacturing Testing
• Supervised Manufacturing Testing
Data Acceptance Programs (DAP)
for the UL Mark and IECEE CB Scheme
UL is the only Nationally Recognized
Testing Laboratory (NRTL) that is
authorized to issue the UL Mark.

6. Additional
Programs
enhance on-time
Market Access
An important component of UL’s mission is to assist
manufacturers to get safe products to market quickly,
efficiently and cost-effectively. By streamlining,
standardizing and bundling services, UL simplifies safety
and improves manufacturers’ profitability.
Single Test
In the Single Test Program, UL is provided
with customer-specific test requirements.
UL then conducts testing and issues a report
with ratings, while avoiding the time
commitment and highly specific parameters
required for certification.This service can
provide PV distributors and plant builders
with the opportunity to test modules/
components from suppliers or support
manufacturers’ Research Development
and data verification, in order to better
steer their production towards certification
standards. Specific parameters may
also be tested which exceed certification
requirements but which fulfill installation-
specific needs. Single tests can be
from published performance and safety
standards, whether international or
country-specific,or as developed by
manufacturer’s to better understand their
products’ performance for material,
component or final product analyses.
Master Fast Track
The Master Certification Program is
designed for manufacturers of PV
production equipment who produce a
complete turnkey-solution for flat-plate or
thin-film PV module manufacturers.The
PV production equipment manufacturer
first submits basic module designs to UL
for Master Certification. Once these are
approved, the production lines can then
be sold to PV module manufacturers with
“pre-certified” designs for production.
The Fast Track Certification Program is for
PV module manufacturers who use an
end-to-end solution from a supplier with
UL Master Certification.The PV module
manufacturer requests Fast Track
Certification under the relevant equipment
manufacturer’s Master Certification Program.
UL performs a review of the module
construction and conducts limited testing.
If no changes from the Master Certified
module have been made,only the Humidity
Freeze Test Sequence on a sample from the
installed production line is conducted.
These UL programs have offered streamlined
testing and certification procedures that
reduce costs and turnaround time for
PV manufacturers, and help them get their
products to market faster.
CEC
To be eligible for the California energy
market, the California Energy Commission
(CEC) requires high-quality testing from
independent laboratories that determine
safety and expected performance of
flat-plate non-concentrating PV modules.
Specifically, modules must be certified to
UL 1703 for safety and must also be tested
to a select set of performance tests derived
from IEC 61215 or 61646. In addition,
building-integrated photovoltaic (BIPV)
modules intended for roof-integrated
installations must comply with the
mounting specifications for normal
operating cell temperature (NOCT).
Inverters and meters are also subject to
standards and ratings. Only equipment
that complies with the California Energy
Commission is eligible for support from
the Solar Electric Incentive Programs.
PV Recognized Components
In order to obtain UL certification for PV
modules, all of critical components must
comply with established North American
standards.That is, in addition to testing
the module itself, all polymeric materials,
junction boxes, connectors and connecting
cables must also be individually assessed.
If the critical components used in their
products have already been certified by
UL, PV module manufacturers can reduce
the risk of delay to market and the costs
associated with end-product certification.
With the comprehensive UL Recognized
Components program and UL’s Online
Certifications Directory, PV module
manufacturers can easily find previously
certified components and materials
meeting North American requirements.
Manufacturers can thereby significantly
reduce design and testing costs, while
increasing the level of safety in the end
product.

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