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HIGH PRECISION TESTING EQUIPMENT Testing of solar thermal collectors and PV modules

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Page 1: HIGH PRECISION TESTING EQUIPMENT - PSE

HIGH PRECISION

TESTING EQUIPMENTTesting of solar thermal collectors and PV modules

Page 2: HIGH PRECISION TESTING EQUIPMENT - PSE

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Products and solutions for experts

PS

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ION

SPSE SOLUTIONS

At PSE AG, our business is high precision testing technology. We plan, build

and install top quality test stands for the testing of solar thermal collectors

and photovoltaic modules, both indoors and outdoors. The test stands are

designed for certification and for R&D purposes.

PSE AG is unique in that we offer turnkey testing solutions designed to your

specification. Building on a standardized base we customize the test stands

and deliver them complete, tested and ready to operate. Our test stands al-

low manufacturers to guarantee the quality of their products to the market,

and research institutes to more easily develop new and more efficient tech-

nology. PSE AG offers you the best available technology for researching and

testing of solar products.

The team at PSE AG has many years of experience in developing and build-

ing test stands for industrial and research use. As a spin-off company of the

Fraunhofer Institute for Solar Energy Systems (ISE), we continue to maintain

a close relationship and develop test stands in cooperation with Europe’s

foremost and largest organization for applied research.

Performance and durability are two of the most important factors for the

success of solar thermal collectors and photovoltaic modules. Quality prob-

lems in the past which have resulted in a lack of durability are now addressed

by today’s recognized quality standards. Each of our test stands is developed

to efficiently and reliably perform a range of different tests to measure the

parameters of collectors or modules conforming to industry standards.

In this brochure PV applications are indexed

blue and Solar thermal applications are

indexed yellow.

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PV

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RSORAS-ST6

SORAS-ST8

STEADY STATE SOLAR SIMULATOR

FOR SOLAR THERMAL COLLECTORS

Our steady state solar simulators enable you to test and develop solar ther-

mal collectors independent of weather and season, faster, more efficiently

and more comprehensively than ever before. Both simulators are turnkey

products, delivered 100 % ready to go!

SUN SIMULATION

In our simulators we use high quality metal halide lamps to generate a

light source with a sun-like spectrum. As the lamps also produce heat,

an glass artificial sky in installed in front of the lamps. The artificial sky

generates an infrared exchange with the collector that emulates outdoor

conditions.

quip a unique test lab in order to “ PSE helped us to equ

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hem as our partner in this project.”glad that we chose them

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PERFORMANCE MEASUREMENT

For the performance measurement, the distribution of light intensity across

the collector surface is required, for each and every measurement. Our

simulators have an integrated X-Y-scanner with a pyranometer mounted on

top, which automatically and precisely determines the homogeneity of light.

Additionally it measures distribution of the artificially generated wind condi-

tions.

For the determination of the power curve of the collector, the mass flow

and the inlet temperature are controlled by the system software. Each test

measurement is completed and validated automatically.

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KEY FACTS OF SORAS-ST6 AND SORAS-ST8

Metal halide lamps which simulate a sun-like spectrum

Artificial wind generators to simulate heat losses caused by wind

Actively cooled artificial sky emulating infrared exchange between

collector and the outdoor sky

X-Y-scanner to measure the homogeneity of total and infrared

radiation as well as the distribution of wind speed

Fully automated determination of efficiency curves including

temperature variations at the inlet of the collector and mass flow

control

Visualization of measurement data in a system diagram

Loading and setting of pre-defined test schedules

Traceability of calibration factors used in the measurement data

Ready for accreditation

ADDITIONAL FEATURES OF SORAS-ST8

Easy mounting of collectors with full access to the test platform

Fully automated collector testing with inclination angles from 0 to 90°

Independent inclination of collector test platform and lamp field

Electrical lamp positioning for setting of different light homogeneities

Easy access to the lamp field for maintenance purposesSO

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SORAS-ST8

Our customer Sunrain, based in China,

tests and optimizes newly developed solar

collectors and thermosiphon systems with

SORAS-ST8.

Technical specifications

SORAS-ST6 SORAS-ST8

Test stand, area specifications

Standard test area 2.2 m × 2.2 m 3.2 m × 2.4 m

Setting angle, test area 0 – 60 ° 0 – 90 °

Angle positioning of light source and collector test platform

fixed independent

Lamp specifications

Number of lamps 6 8

Lamp type metal halide metal halide

Non uniformity better 15 % (2.2 m × 2.2 m) better 5 % (on 1 m × 2 m)better 10 % (on 2 m × 2 m)better 15 % (on 2.4 m × 2.4 m)

Maximum intensity 950 W m-2 1,100 W m-2

Temporal instability of the light source

< 1 % < 1 %

Dimming 75 – 100% 75 – 100 %

Accuracy of test conditions

Temporal stability of water temperature

± 0.1 K ± 0.1 K

Temporal stability of mass flow ± 1 % ± 1 %

Standard boundary conditions

Mass flow 100 – 600 kg h-1 100 – 600 kg h-1

Temperature 0 – 100 ° C 0 – 100 ° C

Wind speed on test area 2 – 4 m s-1 2 – 4 m s-1

Relevant standards ISO 9806, EN 12975

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Scan the QR code to view the ope-ration of SORAS-ST8 at Concordia University/Canada on YouTube!

Page 5: HIGH PRECISION TESTING EQUIPMENT - PSE

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P2 Tracker

P4 Tracker

PSE’s high-precision outdoor trackers give you top-quality testing options.

We offer two different tracking systems, the larger and more accurate Track-

er P4 and the smaller Tracker P2.

Our tracking systems can be combined with different measurement equip-

ment to fulfill requirements of solar thermal collector and PV module test

standards.

Combined with our Heliosensor it is also possible to reach higher tracking

accuracies required for testing concentrating solar technologies.

KEY FACTS

Two-axis tracking

Low installation height for easy mounting of modules and collectors

Aluminum strut system for flexible mounting of the test frames

Tracking with NREL sun position algorithm

Automatic movement to wind safety position

Artificial wind generators are available

P4 Tracker

· Tracking precision: ± 0.5 ° · Load capacity: 500 kg

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P2 Tracker

· Tracking precision: : ± 1 ° · Load capacity: 200 kg

For the control of our tracking systems we provide a graphical user interface

which can be installed on every standard PC. It offers the possibility for re-

mote control of all tracker parameters.

Software features

Tracking perpendicular to the sun

Offset tracking for determination of incident angle modifier

Optional: Tracking on sun position sensor

Software interface for external control

Visualization of deviation between tracker and the sun

Technical specifications

P2 Tracker P4 Tracker

Standard test area 2.2 m × 4 m 2.5 m × 5 m

Load capacity 200 kg 500 kg

Tracking

Elevation axis 22 – 85° 0 – 90°

Azimuth axis 270 ° 330 °

Tracking precision ‹± 1 ° in both axes ‹± 0.5 ° in both axes

Upgrade for testing of concen-tration technologies possible

yes yes

Installation of artificial wind generators possible

yes yes

Relevant standards ISO 9806, EN 12975, IEC 61215, IEC 61646, IEC 62108

Page 6: HIGH PRECISION TESTING EQUIPMENT - PSE

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Heliosensor

The quest to locate the sun’s exact position in the sky is as old as humankind

itself and a wide variety of devices have been developed for this purpose.

The Heliosensor sun position sensor developed by PSE AG in cooperation

with Black Photon Instruments GmbH now allows us to measure the relative

sun position with high resolution in a wide angle of incidence. The Heliosen-

sor’s acceptance angle of ± 55° is unique. This cutting-edge sensor gives

researchers a precise and reliable tool for product development.

The Heliosensor’s patented measuring principle uses a pattern displayed

on a CCD camera chip. Depending on the direction in which the sun hits the

sensor, a different part of the pattern is displayed on the CCD chip and ana-

lyzed to determine the relative sun position to the sensor.

KEY FACTS

Acceptance angle of ± 55°

Monitoring and optimization of single and dual axis tracking systems

Monitoring of performance testing for perpendicular sun irradiation

and IAM

Very high accuracy - better than 0.05° for angles ± 15°

Monitoring of incidence angles on surfaces (e.g. facades)

Measuring principle based on a pattern displayed on a CCD

camera chip

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Heliosensor

$e Heliosensor’s wide acceptance

angle of ± 55° is unique.

Included software for evaluating sensor data uses a graphical user interface

for control, monitoring and graphical display of the relative sun position.

Software features

Data file with time stamp, offset to azimuth and elevation angle

Modbus TCP communication interface connectable to other con-

trollers or PLCs

Graphical user interface to configure data file and Modbus TCP

interface

Technical specifications

Acceptance angle ± 55 °

Resolution better than 0.02 °

Accuracy better than 0.05 ° (for ± 15°),better than 0.5 % for the entire acceptance angle

Temperature range -20 °C to +60 °C

Data interface Ethernet

Communication protocol Modbus TCP

Power supply 12 – 24 V DC

Power consumption 2.4 W

Size diameter: 95 mm / height 35 mm

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Functional principle

of the Heliosensor

$e picture shows a sample

of the pattern displayed on

the CCD chip.

With this technique a large

amount of information can

be detected for each angle

of incidence, so that the sun

position can be determined

with very high accuracy.

Page 7: HIGH PRECISION TESTING EQUIPMENT - PSE

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SysColl

A standalone solution is installed in

an air conditioned container.

SysColl

FACTORY MADE SYSTEM AND

COLLECTOR TESTING FACILITY

For certification in many markets, performance of the complete factory made

system (for example thermosiphon systems) plays an equally important role

as collector performance.

Our SysColl test stand is a combined test facility for performance testing

of both solar collectors and solar thermal systems. This allows you to take

advantage of a flexible two in one test solution.

The entire test facility is constructed in our factory in Germany and shipped

ready-for-testing to customers around the world. If a suitable building is

not available, we offer a standalone solution installed in an air conditioned

container.

KEY FACTS

Steady state collector testing in combination with our tracking

system for the determination of biaxial IAM

Quasi dynamic collector testing of flat plate and vacuum tube col-

lectors

Thermosiphon system, forced circulation system and integrated

storage collector testing

Simulation of auxiliary heaters for forced circulation systems

For more than ten years we have been building performance test stands for

solar thermal applications. Our know-how in user friendliness, certification

and accreditation is combined and provided in the control software of our

SysColl test bench.

Software features

Fully automated and manual configuration

Visualization of the measurement data in a system diagram

Easy implantation of new sensors

Generation of raw data and processed data

Easy traceability of the calibration factors used in the measure-

ment data

Loading and setting of pre-defined test schedules

Technical specifications

Simultaneous testing capacity up to 4

Special collector testing specifications

Accuracy of test conditions

Temporal stability of water temperature ± 0,1 K

Temporal stability of mass flow ± 1 %

Standard boundary conditions

Mass flow 100 – 600 kg h-1

Collector inlet temperature variation 10 – 100 °C

Relevant standards ISO 9806, EN 12975, ASHREA 93, ISO 9459-5, EN 12976-2

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Testing independent of fresh and cooling water

Testing of pressurized and non-pressurized systems

Ready to use and ready for accreditation

All sensors included

Configuration from 1 to 4 test circuits in parallel

Upgrade for storage testing available

Page 8: HIGH PRECISION TESTING EQUIPMENT - PSE

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MLT24

MECHANICAL LOAD TESTER

The MLT24 is our most advanced test stand to simulate static and dynamic

loads on modules and collectors. Twenty-four pneumatic cylinders with vacu-

um suction cups exert both compressive and tensile loads on the test sample,

while reducing local mechanical stress points.

The MLT24 is a reliability test stand for quality and product development test-

ing. It offers a high degree of operational ease and flexibility. A high total exert-

able force allows product development with testing to failure.

KEY FACTS

Reduced local mechanical stress on test unit through a high num-

ber of 24 suction cups

Fast and precise configuration of the cylinder array with mechani-

cal coupling of the cylinders

Practical and ergonomic test setup through crank handles and

scissor mechanisms

Fast adjustment for testing units of different sizes with sliding

cross bars and quick release levers

High precision load measurement using sophisticated design of

the force measuring frame

Static and dynamic load testing according to common interna-

tional standards

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MLT24

ders strain the surface of thermal collectors or 24 pneumatic cylinder

d dynamic load testing with forces up to +27 kN modules. Static and dyna

highly accurate and comparable measurements.and -22 kN enable hig

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Testing to failure through applicable forces up to +27 kN / -22 kN

Highly accurate deflection-measurement of the unit under test by

optical distance sensors.

Electrical continuity measurement for PV modules available

Software features

Intuitive graphical user interface for full remote control of the test

stand

Predefined load cycles according to IEC 61215 and IEC 61646

Dynamic testing according to IEC 62782

Tests with increasing load in 250 Pa steps according to EN 12975

Customized test schedules (even non-cyclic, free definition of vari-

ous load setpoints, can be saved and restored)

Real-time visualization of key measurements in graphical displays

Quick and easy test scheduling – through displaying of required test-

ing times. Automatic start of tests at predefined start times possible.

Technical specifications

MLT24 MLT12

Test area 2.25 m × 1.5 m 2.3 m × 1.3 m

Simultaneous testing capacity 1 1

Number of pneumatic cylinders 24 12

Number of suction cups at one piston 1 (optional 4) 1 (optional 4)

Maximum total exertable force with all cylinders

Push +27,720 N Pull -22,200 N

Push +13,860 N Pull -11,100 N

Corresponding maximum pressure load (on 2 m²)

Push +13,860 Pa Pull -11,100 Pa

Push +6,930 Pa Pull -5,550 Pa

Load cycle frequency 0.1 Hz (optional 1 Hz) 0.1 Hz (optional 1 Hz)

Number of deflection sensors 1 (optional 8) 1 (optional 8)

Relevant standards IEC 61215, IEC 61646, IEC 62782, UL 1703, ISO 9806, EN 12975

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PV

Scan the QR code to view the operation

of MLT24 at the CFV Solar Test Laboratory

on YouTube.

Page 9: HIGH PRECISION TESTING EQUIPMENT - PSE

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MLT12

MECHANICAL LOAD TESTER

The MLT12 is our basic mechanical load test stand. It simulates static and

dynamic loads and is suitable for load testing according to international stan-

dards for modules of typical size. Twelve pneumatic cylinders with vacuum

suction cups exert both compressive and tensile loads on the test sample.

The MLT12 is an excellent product for basic testing. Manual test setup and

adjustment is accomplished quickly and easily. Cylinders are activated or

deactivated with manual ball valves and can be positioned individually to

achieve any desired (even non uniform) suction cup arrangement.

KEY FACTS

Uniform load distribution and software optimization

Fast adjustment for testing units of different sizes with sliding

cross bars and quick release levers.

High precision load measurement using sophisticated design of

the force measuring frame.

Static and dynamic load testing according to common interna-

tional standards

Applicable forces up to +13 kN / -11 kN

Highly accurate deflection-measurement of the unit under test by

optical distance sensors.

Electrical continuity measurement for PV modules available

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MLT12

Suitable for the load testing of collectors

and PV modules according to common

international standards.

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Software features

Intuitive graphical user interface for full remote control of the test

stand

Predefined load cycles according to IEC 61215 and IEC 61646

Dynamic testing according to IEC 62782

Tests with increasing load in 250 Pa steps according to EN 12975

Customized test schedules (even non-cyclic, free definition of vari-

ous load setpoints, can be saved and restored)

Real-time visualization of key measurements in graphical displays

Quick and easy test scheduling – through displaying of required

testing times. Automatic start of tests at predefined start times

possible.

Technical specifications

MLT24 MLT12

Test area 2.25 m × 1.5 m 2.3 m × 1.3 m

Simultaneous testing capacity 1 1

Number of pneumatic cylinders 24 12

Number of suction cups at one piston 1 (optional 4) 1 (optional 4)

Maximum total exertable force with all cylinders

Push +27,720 N Pull -22,200 N

Push +13,860 N Pull -11,100 N

Corresponding maximum pressure load (on 2 m²)

Push +13,860 Pa Pull -11,100 Pa

Push +6,930 Pa Pull -5,550 Pa

Load cycle frequency 0.1 Hz (optional 1 Hz) 0.1 Hz (optional 1 Hz)

Number of deflection sensors 1 (optional 8) 1 (optional 8)

Relevant standards IEC 61215, IEC 61646, IEC 62782, UL 1703, ISO 9806, EN 12975

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PV

Scan the QR code to view the operation

of MLT24 at the CFV Solar Test Laboratory

on YouTube.

Page 10: HIGH PRECISION TESTING EQUIPMENT - PSE

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HIT

HAIL IMPACT TESTER

Hailstorms can cause severe damage to modules and collectors. Our test

stand enables you to carry out tests according to international standards.

The hail impact test stand uses an air-pressurized launcher which shoots

ice balls representing hailstones of a predetermined size at the module or

collector mounted on the support frame.

KEY FACTS

Air pressurized launcher

X-Y-support for aiming on points defined by the standard

Easy module installation

Rapid changes between different hail stone sizes

Ice ball production

Laser speed measurement

Ultrasonic distance measurement between launcher and target

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The software for our test stand was developed by Fraunhofer ISE. Various

test engineers gave their input to the software to fulfill their requirements

on usability as well as the requirements of standardization bodies according

to accreditation.

All important test parameters are recorded and stored via the test stand’s

graphical user interface.

Software features

Easy export of test parameters to generate a test report

Guiding of the user through the test

Automatic checkup of the validity of the test

Display of all measurement values

Definition of standard and customized tests.

Technical specifications

Standard test area 3 m × 1.8 m

Simultaneous testing capacity 1

Hail stones 9

Standard diameters 25, 35 and 45 mm

Velocity of ice balls 10 – 40 m s-1

Relevant standards IEC 61215, IEC 61646, EN 12975, ISO 9806

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RAST

RAIN PENETRATION AND

THERMAL SHOCK TESTER

This is a user-friendly, three-in-one test stand for your operating conve-

nience. Internal and external shock tests as well as rain penetration tests

are all important for determining the quality and durability of your products

and meeting all relevant international standards.

The hydraulic circuit, sensors and data acquisition equipment are designed

to perform tests according to ISO 9806, EN 12975 and EN 12976.

KEY FACTS

Testing of flat plate and vacuum tube collectors as well as

thermosiphon systems

Weather independent rain penetration testing

Flexible adjustment for different collector sizes

Easy modification of the inclination angle

All sensors included for standard testing

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All relevant test parameters can be configured via a graphical user interface

using our standard software. This also enables you to transfer measured

data to a PC for documentation.

Software features

Fully automated testing

Input field for reference numbers to match measurement data and

collector model

Definition of standard test cycles as well as free programming

Saving of all configuration data for documentation purpose

Easy entering of calibration values of sensors

Technical specifications

Standard test area 2.2 m × 2.2 m

Simultaneous testing capacity 1

Number of spray nozzels 9

Water temperature regulation Controlled heater

Accuracy of sensors

Volume flow ± 5 %

Temperature sensor Class B

Pyranometer First Class

Relevant standards ISO 9806, EN 12975, EN 12976

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SDRIVING RAIN TEST STAND

When PV modules replace roof cladding, they must meet current roofing

standards. This stand test was specially designed for TÜV Rheinland in Co-

logne, Germany to test the water tightness and imperviousness of PV mod-

ules to heavy rains. The automatic angle adjustor allows testing of different

roof pitches.

A large fan simulates different wind speeds, while water jets spray artificial

rain onto the modules. If the modules or their fasteners are not watertight,

any leakage is collected in catchment tanks.

KEY FACTS

Tests the impermeability of building elements

Applicable for integrated solar thermal systems, building integrat-

ed photovoltaic systems (BIPV) and various types of roof materials

Wind-driven rain tests under different contact angles

Roof angles of 15, 30 and 45 degrees

Wind speed increments from 0 to 25 m s-1

Rainfall from 6 to 416 mm s-1

TÜV RheinlandDriving Rain Test at TÜV

Rheinland to determine Test Stand at TÜV Rhe

ntegrated photovoltaic the resistance of roof-inte

d-driven rain. systems (BIPV) to wind-d

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A test series at TÜV Rheinland consists of twelve sub-tests. Each sub-test

collects data of the simulated weather parameters, such as rainfall, wind

speed, and running water under different test angles.

Software features

Setting of the rain fall amount and wind speed

Visualization of the measurement data

Full access to all configuration parameters

Automated failure detection

Easy implementation of calibration parameters

Technical specifications:

Roof angles 15° to 45°

Wind speed 0 – 25ms-1

Rainfall 6 – 416mms-1

Relevant standards prEN 15601, prEN 50583, UL 1703, MCS 012, 2 PfG 1794/10.10

© TÜV Rheinland

©

TÜV Rheinland

©

TÜV Rheinland

Page 13: HIGH PRECISION TESTING EQUIPMENT - PSE

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MLTSYS

MECHANICAL LOAD TESTER

MLTSYS was developed according to the specific requirements of the

Fraunhofer Institute for Solar Energy Systems ISE (Fraunhofer ISE) in

Freiburg, Germany. The test stand simulates mechanical loads on thermal

collectors and mounting systems under extreme climate conditions. To real-

ize the climate changes the MLTSYS is housed in a climate chamber.

With the MLTSYS test stand, scientists at Fraunhofer ISE aim to develop new

test procedures and advance the quality and safety standards for collectors

and PV modules over long-term conditions. New materials and material

savings for thermal collectors, compact systems and PV modules with sub-

structures can be tested and improved.

KEY FACTS

Tests collectors with the entire assembly system

Housed in a climate chamber

Climate conditions in test chamber from -40 °C to +60 °C

Wind and snow loads up to 6,000 Pa on the entire test area (push

and pull)

Cyclical and asymmetric loads

Maximum size of test surface 3 m × 4 m

Tests inclined installed samples, e.g. thermosiphon and PV systems

Remote controlled camera

Fast and precise cylinder positioning through coupling of the cylinders

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MLTSYS at Fraunhofer ISE

�is customized solution at Fraunhofer ISE is

housed in a climate chamber to examine mechanical

loads under extreme climate conditions.

Technical specifications

Standard test area 3 m × 4 m

Climate conditions -40 °C to +60 °C

Simultaneous testing capacity 1

Number of pneumatic cylinders 24

Number of suction cups per cylinder 4

Maximum total exertable force push and pull: 6,000 Pa

Load cycle frequency 0.1 Hz

Number of deflection sensors 1

© Fraunhofer ISE

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©

Fraunhofer ISE

MLTSYS is equipped with highly sensitive force sensors enabling detection

of applied forces in all three directions (3D). This allows the examination of

thrust forces.

Please see page 16-19 for our standardized test stands to simulate static

and dynamic loads on modules and collectors, other variations are readily

possible. We will be pleased to tailor the test stand MLTSYS to your needs!

Software features

Intuitive graphical user interface for full remote control of the test

stand

Predefined load cycles according to international standards as

ISO 9806

Customized test schedules (even non-cyclic, free definition of

various load setpoints, can be saved and restored)

Real-time visualization of key measurements in graphical displays

Quick and easy test scheduling – through displaying of required

testing times. Automatic start of tests at predefined start times

possible.

Remote view via camera

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We can develop a service plan that is perfectly tailored to your needs.

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AFTER SALES SERVICE

PSE AG’s commitment to our customers does not end on delivery of our

products. PSE AG and the Fraunhofer Institute for Solar Energy Systems

ISE, offer you customized training programs and after sales services. Our

highly-skilled team offers our customers qualified, fast and efficient service

to fulfill all requirements and to provide the best possible solutions to meet

your needs.

Several different packages are available:

Standards

Overview of existing international standards

Differences between standards

Certification

Reasons for certification

Overview of certification labels

Reasons for round robin tests

How round robin tests work

Accreditation

Introduction to ISO 17025

Requirements necessary for fulfilling ISO 17025

Certification bodies

Overview of existing certification bodies

Overview of IEA Tasks

Solar ordinances

Existing programs

Who can help me with solar ordinances in my country?

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REFERENCES

Client references:

Groupo ICE, Costa Rica

BDR Thermea /Baxi Group, Spain

Technical University Prag, Czech Republic

ZAE Bavaria, Germany

TUV Rheinland, Germany

Fraunhofer Institute for Solar Energy Systems ISE, Germany

Robert Bosch GmbH, Germany

CSA International, Canada

Concordia University, Canada

CFV Solar test laboratory, USA

Sunrain Solar Energy Co.,Ltd, China

Park Naukowo –Technologiczny “Euro-Centrum” Sp. z o.o., Poland

Solar Energy Research Institute of Singapore (SERIS), Singapore

Instituto de Pesquisas Tecnologicas (IPT), Brazil

Institut National de l’Energie Solaire (INES), France

Center for Solar Energy Studies (CSES), Libya

Austria Solar Innovation Center (ASIC), Austria

GREEN Institut Belo Horizonte, Brazil

Our research partner:

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PSE AG

Frank Luginsland

Member of the Board of Directors

Emmy-Noether-Strasse 2

79110 Freiburg

Germany

Phone: (+49) 761 - 479 14-12

E-Mail: [email protected]

www.pse.de