Calyxo CX1 User manual

OPERATING MANUAL
CX SERIES
REV2.0 May 2017 –EN/EU-USA-Canada

1. INTRODUCTION ................................................................................................. 3
2. BEFORE YOU BEGIN ........................................................................................... 4
2.1 PRODUCT FEATURES ................................................................................................ 4
2.2 SAFETY INSTRUCTIONS..................................................................................... 5
3. RULES,STANDARDSANDLEGALREQUIREMENTS .......................................... 7
4. MECHANICAL SPECIFICATIONAND DRAWING ............................................. 10
5. ELECTRICAL SPECIFICATION ............................................................................. 11
6. INSTALLATION ...................................................................................................... 12
6.1 MOUNTING....................................................................................................... 12
6.2 MOUNTING VARIANTS .................................................................................... 14
6.3 INSTALLATION SITE, MODULE ORIENTATION................................................... 15
6.4 AVOIDING SHADE .......................................................................................... 16
6.5 ELECTRICAL LAYOUT..................................................................................................... 17
7. OPERATIONS MANAGEMENT ....................................................................... 22
8. SERVICE....................................................................................................................... 24
9. WARRANTY TERMS AND CONDITIONS ........................................................ 24
10. GENERAL............................................................................................................ 25
11. NOTES.................................................................................................................... 26

1. Introduction
This operating manual is a customer document of the company Calyxo GmbH, based in Thalheim,
Germany. It describes how to handle Calyxo solar modules and construct solar fields using modules
made by Calyxo. Please read this operating manual carefully before you store, install
or handle the modules in any other manner. This manual includes safety instructions for using,
installing, mounting, wiring and storing Calyxo CdTe solar modules.
Calyxo CdTe solar modules allow you to transform the unlimited energy provided by the sun into
environmentally friendly electrical power. Please take note of all the following requirements and
instructions in order to be able to make full use of the performance capacity of Calyxo solar modules.
Ensure that the installation, operational and maintenance work is only undertaken by qualified
personnel having the specialist expertise described in this operating manual, are being familiar with this
operating manual and are aware of and observe the applicable regulations for occupational safety and
accident prevention.
Store this operating manual for future reference.
This manual exclusively applies to installations in Germany, Europe, USA and Canada. Prior to
installing Calyxo solar modules at any other location, please contact your distributor. Additional
guidelines and instructions or indication about country-specific information will be provided upon
request.

2. Before you begin
Introductory NOTES
This operating manual includes notations and symbols that make it easier for you to read this
document and which are intended to ensure that you are able to work safely with Calyxo solar
modules.
SYMBOLSFORSAFETYINSTRUCTIONS
Possible danger, injuries or damage
Warning: dangerous electrical voltages
Important information
2.1 Product features
PROPER USE
Calyxo solar modules are used to generate electrical power in photovoltaic systems. To generate power,
the solar modules are attached to connectors and electrically connected to a control device such as an
inverter or a chargecontroller.
Calyxo solar modules are developed and constructed in keeping with the latest technological
developments. When used properly, in accordance with all of the instructions outlined in this operating
manual and in combination with regular maintenance, they guarantee the highest level of safety.
The operator is responsible for full compliance with the instructions for mounting, transporting, wiring,
storing, operating, cleaning and maintaining Calyxo solar modules outlined in this operating manual.
Any usage of Calyxo solar modules other than that described in this operating
manual is prohibited. Calyxo shall assume no liability for damage to or caused by
solar modules resulting from improperuse.

DISCLAIMER
This manual only applies to the products in the CX series (CX1, CX3, CX3pro, CX4) made by Calyxo
GmbH. Calyxo does not assume any liability for damage caused by failure to comply with this
manual. Please note that the person setting up the system is responsible for wiring and dimensioning
the system as well as complying with all necessary safety guidelines during the layout planning and
installation processes. This manual does not provide a basis for liability on the part of Calyxo GmbH.
Calyxo GmbH shall only be liable in the context of contractual agreements or accepted warranties.
Calyxo shall not assume any responsibility extending beyond the functionality and safety of the
modules. Calyxo GmbH shall particularly not be held liable in cases of force majeure or external
influences over which Calyxo GmbH has no control. Please also observe the instructions for the other
system components that could be included in the solar power system. It may be necessary to generate
statics for the entire project. If this manual does not sufficiently answer yourquestions, please contact
your system suppliers. In the event of misinterpretation, inconsistencies or misunderstanding, the
German version of this limited warranty clause shall prevail. Information contained within is subject to
change without notice.
Further information is available on our website: www.calyxo.com.
2.2 Safety instructions
ELECTRICAL SYSTEMS
Solar modules generate electric current and voltage even at low levels of illumination. Physically
disconnecting a closed electrical circuit could cause electrical voltage and currents, such as electric arcs
to arise. These could result in life-threatening injuries. The risk increases when several modules are
connected. Requirements for special installations or locations - Photovoltaic (PV) power systems- must
be observed.
•Cover the solar module with opaque material during the entire assembly process. This is the only
way to ensure that the modules are reliably de-energized.
•All guidelines and safety instructions that apply to the installation of electrical devices and
systems e.g. IEC60364 -7-712 , must be observed.
•Installation shall be in accordance with the National Electrical Code, ANSI/NFPA 70 (in the US) and with CSA
C22.1, Safety Standard for Electrical Installations, Canadian Electrical Code, Part I (in Canada).
•The extra-low voltage range is exceeded for module or phase voltages of over 120 V.Takethe
necessary safety and precautionary measures.
•Do not insert any electrically conductive parts into the plugs or junction box. Do not touch the
contacts or exposed terminals.
•Keep children and unauthorized persons away from the modules.
•In the event of malfunctions or damage to installed modules, always contact your installer or the Calyxo After
Sales service (see ‘Troubleshooting’).
•Immediately take damaged solar modules (such as ones with broken glass) out of operation.
•Do not disconnect the plugs under load.
•Wear electrically rated PPE when working on interconnected modules or system components.
Please inform yourself about actual or additional information on handling electrical systems, and about
the regulations of your local energy supplier.
WARNING!
Danger of death due to electricshock!

PRODUCT PROTECTION
Protect the modules from scratches and other damage, especially impact at the edges and improper
temporary storage.
Do not submit the module surface to any mechanical stress. Do not stand on the modules. Do not drop
or place any objects on themodules.
Only make changes to the modules that have been previously confirmed by Calyxo in writing. Do not
carry out any additional drilling (for example, for fasteners) on the solar modules. Do
not under any circumstances open the splash-proof junction box.
Never use light concentrators (such as mirrors or lenses or any other means to artificially concentrate
light) to increase the power output of the modules. Doing so can damage the modules and shall render
the extended warranty void.
TRANSPORT AND STORAGE
Transport the module in its original packaging through to installation.
Use a glass suction cup to remove and transport the module, or hold the module by the edges. You need
to carry the module upright across longer distances.
Do not under any circumstances lift or move the module by the connecting cables or the junction box!
Store the module securely in cool and dry rooms. The packaging is not weather-resistant! Do not
rest the module unprotected on its edges. Doing so can damage the module.

3. Rules, standards and
legal requirements
APPLICABLERULES/GENERALSAFETYINSTRUCTIONS
The rules and instructions below will help you handle Calyxo solar modules safely. They provide an
overview, without making any exclusive claim to completeness, of the most important aspects of safely
working with Calyxo solar modules. They do not in any way replace expert instruction
or training. Please inform yourself prior to beginning work of the current national or regional regulations
on occupational safety and accidentprevention.
The accident presentation regulations ‘Fundamentals of prevention’ (BGV A1) and ‘Construction work’
(BGV C22), especially the provisions on fall protection, ‘Electrical systems and equipment’ (BGV A3), as
well as the respectively applicable security regulations, guidelines and data sheets on occupational
safety published by professional associations need to be upheld.
HANDLING GLASS
Glass is a durable, long-lasting material. Handling glass requires complying with several basic rules and
guidelines. The key to safely handling glass is correctly selecting and using personal protective
equipment. Always ensure your own safety and wear safety goggles, safety shoes and cut-resistant
gloves. Gauntlet gloves protect your forearms. You need to wear them when you are wearing short-
sleeved clothing.
Since the modules consist mainly of glass, they need to be handled with corresponding caution. Before
transporting the modules, ensure that the transport route is clear and that the mounting location of the
solar modules is easily accessible. When using a hand vacuum for transport, ensure that the sealing
surface of the hand vacuum is clean, dry and free of damage in order to ensure sufficient holding force.
If you are carrying the modules by hand, ensure that you have a good grip on the modules and that your
gloves are clean and dry. In order to guarantee safe mounting, act in keeping with the national
regulations on occupational safety and accident prevention. Wear suitable protective work wear (such as
protective footwear and cut-resistant gloves) to prevent injuries.
Failure to comply with safety regulations may lead to damage and injury!
WARNING!
Danger of being cut by broken glass! Risk of injury from fallingmodules!

Additional information on handling glass is available from sources such as the DGUV (German Social
Accident Insurance) or the German Federal Flat Glass Association.
•DGUV-SI 8027 Safely handling broken glass
•BGI 5084 Glass and window work
•TRLV-2006 ‘Technical regulations for the use of glazing with linearsupports’
•TRPV-2006 ‘Technical regulations for the use of glazing with punctualsupports’
•Wear safety glasses (ANSI Z87.1-2003) and cut-resistant gloves when working on non-interconnected modules
or systems
WORKING ATHEIGHTS
Calyxo solar modules are suitable for assembly at ground level or installation on rooftops. Ensure that
the substructure is correspondingly designed for local wind and snow loads in accordance with DIN
1055-4 (2007) and 1055-5 (2005). Ensure that the regionally or locally applicable building regulations are
upheld. Comply at all times with the BVG C 22 regulations of the German Builder’s Union for accident
prevention at construction sites.
If you intend to install the modules on a rooftop or at a height, observe the specialist regulations set
out by the roofing trade. Ensure proper fall protection, since falls from heights are the most common
cause of fatal workplace accidents. Ensure that the modules can be safely transported with protection
from the ground-level unloading site to the mounting location on the rooftop.
•BGV C 22: Accident prevention at constructionsites
•BGI 694 Handling ladders and steps
•BGI 720 Lifting platforms
If you have additional questions or require training for yourself or the people who are or will be
storing, assembling or installing the Calyxo solar modules, please contact your system supplier or
vendor.
Never place the module on its edges, even for a short period of time. This runsthe risk
of damaging the edges of the module, even when no damage is visible. Never stand on
the modules, not even on their outsides or for a short period oftime.
Doing so may damage the modules, generate voltage and cause damagethat
could detract from the modules’ longevity.
WARNING!
Danger of unprotected falls fromheights

ADDITIONAL INFORMATION FOR INSTALLERS
Ensure that the solar power system is installed, expanded, changed and kept in good operating
condition in accordance with all applicable laws and regulations as well as the generally recognized
national regulations for technology. The products must be installed by a licensed electrician in
accordance with the applicable electrical code (i.e. the NEC for the USA and CEC for Canada).
After installation, hand over the operating manual as well as the corresponding installation
documentation (construction drawings, site plans, wiring diagrams, data sheets on components,
measurement and test reports such as VDE 0126-23 , DIN EN 62446 and so on) to the respective
operator of the solar power system. Inform the operator that this manual is part of the product and is to
be kept for the duration of the system’s service life.
ADDITIONAL INFORMATION FOR OPERATORS
Request documentation, an acceptance report and an inspection report for the PV system with the
minimum requirements set out by IEC (DIN EN) 62446 or VDE 0126-23 from the installer.
Store these reports together with this manual for the duration of the module’s service life. Without
presenting these documents, especially the inspection or commissioning report in accordance with the
above standards, the guarantee or warranty (in accordance with PAS-11-05-0173-EN) shall not apply.
Pay particular attention to the ‘Troubleshooting’ and ‘Cleaning and maintenance’ sections. For
information on the formal requirements for solar power systems, please refer to your system suppliers.
Prior to installing the solar power system, make sure to inform yourself of the guidelines and approval
requirements set out by the relevant local authorities and energy suppliers. To protect your own
interests, please obtain the required approvals from authorities as well as the necessary contracts with
energy suppliers. We recommend that you secure your solar power system against natural hazards (such
as lightningstrikes).

4. Mechanical specification
Figure 1
Rear side view
CX3, CX4
Figure 2
Rear side view
CX3pro
Figure 3
Rear side view
CX1
Figure 4
Front side view
A=
CX3 9.0 mm
CX3pro 7.0 mm
CX1 9,0 mm
CX4 7,0 mm
Specification
CX1, CX3, CX3pro, CX4
Length
1200 mm
Width
600 mm
Weight
12 kg
Structure
Glass/Glass Laminate
Surface (Total area)
0.72 m²
Operating Temperature
-40°C to +85°C

Figure 5
Product Label
PRODUCT TYPE
PRODUCT NAME
CdTe / CdS THIN FILM SOLAR MODULE
CX3 XX
PERFORMANCEATSTANDARD TESTCONDITIONS*
Tolerance
Nominal Power
P
max
[W]
+10%/-5%
Short Circuit Current
I
sc
[A]
+/-10%
Open Circuit Voltage
V
oc
[V]
+/-10%
Current at Maximum Power
I
mp
[A]
+/-10%
Voltage at Maximum Power
V
mp
[V]
+/-10%
Maximu m System Voltage
1000V [IEC], 600V [UL]
Design Load
2400Pa [IEC], 50lb/ft² [UL]
*S TC:1 000W/m², 2 5°C, AM 1.5S pectr um. Data give n are rate d (nomin al) values . See Install ation and
Operati ng Manual for furth erin formation on app roval install ation and use of this prod uct.

5. Electrical specification
In normal operation, a photovoltaic module can generate more energy and/or more voltage under the
influence of climatic conditions than it can under standard test conditions. Please also note the
instructions in 6.5 –Electrical layout.
The desired system fire class rating can be obtained by using a properly rated mounting system
approved for use with type 6 modules as the module fire classification for Calyxo modules is Type 6. The
fire rating of the CX Series modules are valid only when mounted in the manner specified in section 6 of
this manual and observing instruction as per PAS-11-05-0190EN (available from calyxo.com).
The electrical ratings of CX series modules are given in the respective Data sheets for CX1, CX3, CX3pro
and CX4 and are available for download at www.calyxo.com.
The electrical characteristics are within ±10 percent of the indicated values of Isc, Voc, IMPP, VMPP and
+10/-5 percent for Pmax under standard test conditions (irradiance of 100 mW/cm2, AM 1.5 spectrum,
and a cell temperature of 25°C (77°F)).
TECHNICAL DATA
Additional data including details of the electrical characteristics for the CX series power classes is
available from the respective data sheet at www.calyxo.com
Product type
CX1, CX3, CX3pro, CX4
Max. system voltage VSYS
1000 V (600V (UL))
Limiting reverse current I
R
CX1 2.0A
CX3 4.0 A
CX3pro 3.5 A
CX4 2.5 A
Maximum Series Fuse Icf
CX1 2.0 A
CX3 3.5A
CX3pro 3.5 A
CX4 2.5 A
Junction box
Protection class IP65 without bypass diode
Connector
CX1 Multicontact MC3 or MC4
CX3, CX3Pro Multicontact MC4
CX4 Multicontact MC4
Cable
Studer Betaflam 125 Flex, 2.5 mm² (14AWG)
Cable lengths
650 mm (+Cable)/850 mm (-Cable)
Fire class
C (Type 6)
Wind/snow load
2400 Pa [IEC]; 50 lb/ft2[UL]
Certificates/Approvals
CE, IEC 61646 (ed.2); IEC 61730 (Ed.1) Application class A; BRE
MCS; UL 1703
Serial number
Serial number through end of 2012: LYYMMDDTWWBBGXXX
Serial number from 2013: LYYDWWBBGOxxxXXX
Serial number from 2016: LYYMMDDOxxxxXXX
L= Production line; YY= Production year; M=Month;
DD= Day; D= Weekday; T= Type designation; WW= Calendar
week; BB= Batch; G= Glass type; O= Oven; xxx= empty; XXX=
Consecutive number

6. Installation
6.1 Mounting
GENERAL
The module is considered to be in compliance with UL 1703 only when the module is mounted in the
manner specified by the mounting instructions below. Any module without a frame (laminate) shall not
be considered to comply with the requirements of UL 1703 unless the module is mounted with
hardware that has been tested under this standard or by a field inspection certifying that the installed
module complies with the requirements of UL 1703. When installing a module in the USA or Canada,
please refer to “PAS-11-05-0190EN mounting instructions UL” for further details on mounting and
installation of a CX series module.
WIND/SNOW LOAD
The modules are suitable for use under a wind and snow load of up to 2400 Pa [IEC] / 50ft2[UL].
WATER RUNOFF
Orient the modules in such a way that rainwater and snowmelt can run off freely and do not accumulate
to create lasting soiling.
MOUNTING STRUCTURE
Install the modules on a mounting structure:
•that corresponds to the required statics and the local wind/snowloads
•that can be properly fastened in the ground, on the roof or on the facade
•that can transfer forces on the modules to the assembly substructure
•that ensures that no mechanical stress (such as ones caused by vibrations, twisting or
expansion) is placed on the modules
•that ensures sufficient rear ventilation of the modules
•whose electrochemical series does not give rise to galvanic corrosion in the case of direct
contact between different metals
•The clamps and rail system need to be constructed as a coordinated unit.
MODULEFASTENING
Fasten the module in accordance with the following mounting variants (see 6.2). The clamping
ranges defined for this can be seen in figures 6 to 8 (pages 13 and 14).
Ensure that the modules do not bend or twist by more than 3 mm/m (without additional load from
sources such as wind, snow etc.). Observe the technical regulations for the use of glazing with fix point
or linear supports (TRLV, TRPV). Position the module so that it is planar.
Depending on the wind load and the angle of inclination, we recommend attaching additional non- slip
safeguards and/or spacers.

OCCUPATIONALSAFETYREGULATIONS
In order to guarantee safe mounting, act in keeping with the national regulations on occupational safety
and accident prevention.
The guidelines and safety instructions applicable to the installation of electrical devices and
systems, such as DIN DVE0100-712 for Germany, must be observed.
FIRE PROTECTION
Observe the applicable regulations and safety instructions regarding the fire protection class for
rooftop installations. The CX product series meet fire class C (Type 6).
For rooftop mounting, modules must be mounted over a fire resistant roof covering rated for the
application. The recommended minimum standoff height is 3.25 in (82.55 mm). Modules used in UL
Listed rooftop applications must be installed with approved mounting systems. If alternate mounting
means are employed, this may affect the Listing fire class ratings and additional UL fire testing may be
required. The fire rating of this module is valid only when mounted in the manner specified in the
mechanical mounting instructions.
MECHANICAL ASSEMBLY
Only clamp or assembly systems approved by Calyxo (PAS-11-05-0166-EN; PAS-11-05-190EN when
installing in USA or Canada under UL 1703, respectively) may be installed; otherwise, the extended
warranty is not void. Calyxo shall test clamp systems upon request and approve them on a case-by-case
basis. A list of approved clamp systems is available at www.calyxo.com.

GENERALREQUIREMENTS FORTHECLAMPSYSTEM
Ensure that the clamps do not generate any additional stress on the modules. The modules should be
supported so that they are ‘floating’.
•The clamps to be used should have clamping limitations. Ensure that the insulation material on the
top and bottom is compressed by a maximum of ten per cent.
•When the modules are installed, the clamp opening needs to be kept at 6.8 mm +/- 0.2 mm.
•Ensure that no direct contact is made between glass and metal.
•Use a suitable silicone-free rubber support between the modules andclamps.
•Clamp width (figures 7 to 8): ≥ 70.0 mm
•A minimum lateral distance between the edge of the glass and the side of
the clamp of 1 mm needs to be 1 mm at 25°C/77°F (figure 6) to enable the
thermal expansion of the modules shall be observed
•Glass inset (figure 6)
o 7.0 mm to 9.0 mm on the top of the module (according to the series)
o ≥ 12.0 mm on the bottom of the module
Figure 6
Module cross section
1= Module clamp
2= Rubber
3= Glass (front side)
4= Glass (rear side)
5= Active cell area
7.0–9.0
≥12
6.9
±0.1

6.2 MOUNTING VARIANTS
Fix Point SUPPORT / LINEARSUPPORT
When set up with fix point support, the modules only touch the substructure via the clamps. When
set up with linear support, however, the modules sit on top of the substructure. Thus, for a linear
support, place a silicone-free rubber support between the substructure and the clamps so that the
glass and metal do not touch at any point.
THE FOLLOWING MOUNTING VARIANTS ARE POSSIBLE:
•Substructure lateral beneath the module with two clamps per module side (figure 7)
•Substructure diagonal beneath the longer sides with two clamps per module side (figure 8)
Germany/Europe: Use approved clamps included on the Calyxo contact list (PAS-11-05-0166-EN)
exclusively.
USA / Canada: Refer to PAS-11-05-0190EN when installing a UL 1703 compliant system.
Figure 7
A= ≥70 mm
B= 275 mm ±25 mm 2
1= Module
2= Junction box
3= Module clamp 1
4= Substructure
Figure 8
A= ≥70 mm
B= 275 mm ±25 mm
1= Module
2= Junction box
3= Module clamp
4= Substructure

6.3 Installation site, module orientation
INSTALLATION SITE
•The modules have been inspected for safe operation in a moderate climate in accordance with IEC
61646.
•The permitted module temperatures are between -40°C and +85°C. Ensure sufficient rear
ventilation in order to avoid elevated module temperatures.
•Install the modules in coastal regions at least 1000 m removed from the sea.
•The modules cannot be used for installations at heights of over 2000 m above mean sea level, since
here special conditions for the insulation properties of all electrical components and photovoltaic
modulesapply.
•Do not expose the modules to chemicals.
•The modules should not be placed in standing water. The junction box is only splash-proof.
•Solar modules are not explosion-proof equipment. Do not install the modules in the proximity of
highly flammable gases and vapors (such as gas containers, petrol stations) or near open flames
and flammable materials.
•The modules are not suitable for mobile use or indoorinstallation.
MODULEORIENTATION
•Modules can be installed parallel to the roof with an angle of inclination of at least3°.
•Install the module so that the junction box is located in the upper portion of the module and the
cables hang down.
•The modules need to be installed with a minimum lateral distance of 10 mm from the next
module. Exceptions to this rule must be explicitly approved by Calyxo. The approval is part of the
operating license. Use all of the provided fastening points and prevent the glass and metal from
touching (for example, on the mountingrails).
WARNING!
Fire hazard for improper moduleorientation!

6.4 Avoiding shade
Shadowing
Optimal solar radiation leads to maximum energy yields. Because of this, install the module in such a
way that it faces the sun. The optimum angle of inclination for the module is dependent on the
respective latitude of the installation location. To determine the optimum orientation of your model,
we recommend using a photovoltaic simulation tool. For angles of inclination less than 3°
(longitudinal side of the module from the eave), it needs to be ensured that adherent contamination is
removed by sufficient precipitation or through regular manual cleaning (also see the section ‘Cleaning
andmaintenance’).
TYPICALSHADE SCENARIOS
1) Reduction in performance proportional to the shaded surface
2) Shade parallel to the cells can reduce the performance of the module/string by up to 100 per
cent.
3) Combination of 1 and 2 leads to reduced performance
4) Reduction in performance proportional to the shaded cell length. Local heating is possible.

6.5 Electrical layout
•Never physically disconnect the plugs when the module is under load, since this creates electric arcs
and could result in life-threateninginjuries.
•Exercise the utmost caution when working with the inverter and the cables.
•Ensure that the modules on the inverter are activated before being disconnected.
•Once the inverter has been switched off, before beginning further work, make sure to uphold the
time intervals prescribed by the manufacturer in order to allow the high-voltage components to
unload.
•Cover solar modules with opaque material during the assembly process. This is the only way to
make sure that the modules are reliablyde-energized.
•Never touch the live contacts with bare hands. Only use isolated, dry tools for installation.
•During connection, ensure the correct polarity. The connectors are marked with a plus sign on the
positive terminal and a minus sign on the negative terminal.
•Do not under any circumstances open the splash-proof junction box.
•Only install undamaged solar modules.
•Ensure prior to installation that the junction box, cable, connectors and tools are dry and free of
damage.
•Always store the solar modules in a secure, dry place. The packaging is not weather-resistant.
•Ensure that even at low temperatures and/or solar radiation of over 1000 W/m², the maximum
open-circuit voltage of the wired modules does not exceed the system voltage of 1000 VC (IEC
61646/IEC 61730 or IEC 61215) or 600 V DC (UL1703).
•Integrate the solar plant into the existing lightning protection system in accordance with local
regulations.
•Do not perform installation or maintenance work on the modules under conditions of heavy wind or
rain. We recommend that you only perform installation or maintenance work during dry weather.
•When mounting the modules on buildings, there is a risk of tools, mounting materials or solar
modules falling down and hurting people. Because of this, block off the danger zone on the
ground prior to beginning mountingwork.
•Warn people who are near the danger zone or inside the building. Keep children away from the
installation site.
•Carry out wiring work in such a way that no people are endangered and no damage can occur.
•Protect all parts of the module from mechanical stress (such as pressure, tension or torsional
stress) during transport and installation. Ensure that the bend radius for cables at the output of the
junction box is kept at 60 mm as a minimum during installation or operation.
WARNING!
Danger of death due to electricshock!
WARNING!
Damaged module components may behazardous!

MODULE SELECTION
Please refer to the detailed electrical characteristics from the product data sheet.
Only wire modules of the same type and performance class. This is the only way to ensure maximum
yields and system operation that is secure and free from disruptions.
GUIDELINES
Modules cannot be operated for more than 90 consecutive days under open-circuit or short-circuit
conditions. Consult with Calyxo if you are unable to uphold this time frame.
All of the components attached to the system need to have an operating window that matches the
‘Maximum Power Point’ (MPP). The components need to be capable of operating at the MPP at all
times.
SAFETY FACTORS
Under normal conditions, a photovoltaic module is likely to experience conditions that produce more
current and/or voltage than reported at 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 ampacities, fuse sizes, and size of controls connected to the PV output. Refer
to Section 690-8 of the National Electrical Code for an additional multiplying factor of 125 percent (80
percent derating) which may be applicable.
For a module the multiplying factor at conditions of an irradiance of 125 mW/cm2, AM 1.5 spectrum,
and a cell temperature of minus 10°C (plus 14°F) for VOC and plus 75°C (167°F) for ISC is to be
determined and this factor is to be indicated in the instructions. Thus, it is advised to take a security
factor of 1.25 for the parameters listed below into account, in accordance with IEC 61730-1 Paragraph
12.7:
•Determining the voltage measurement values (V ) of components
•Determining the current measurement values (I
•Determining fuse sizes
OC
SC) of conductors
•Measuring control systems to the outputs of the solar modules.
At any rate, the applicable national regulations for installing electrical systems need to be observed.
6.5.1 Series connection
Only wire modules of the same type and performance class. Please take special note of the positive
sorting and the tolerance ranges for Voc and VMPP indicated in the datasheet of the respective CX series
module.
Series connection of the modules is only permitted up to the maximum system voltage provided in the
respective currently applicable data sheet.
When installing the modules, take into account all working conditions and relevant technical regulations
and standards. Doing so ensures that the maximum system voltage, including the required safety
margins, are notexceeded.
When determining the string length, also take the voltage limit of the inverter into account.