Brochure/Catalogue
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Weidmüller’s product range includes surge protection 
that meets the very latest standards governing the specic 
requirements of photovoltaic systems on the roofs of 
 industrial buildings – on request, they can be individually 
congured and integrated, ready-to-wire, in a housing.  
With such equipment, system operators can count on their 
anticipated returns.
Lightning currents and surge voltages are often responsible 
for damage to inverters and photovoltaic modules. Not only 
does this damage represent huge repair costs for operators, 
it also has a major impact on the economic viability of the 
entire facility.
To enable our customers to set up their photovoltaic systems 
that are t for the future, our solutions of product line 
 VARITECTOR PU always satisfy the very latest application and 
product standards. Our entire range of surge protection de-
vices already meets the current standard EN 50539-11:2012 
which stipulates how surge protection in photovoltaic sys-
tems has to be designed on the DC voltage side.
Weidmüller also provides complete surge protection systems  
which fully complies with EN 50539-12 for the DC and 
EN 61643-12 for the AC sides. 
The devices are designed especially for photovoltaic 
 applications and effectively prevent the undesired activation 
of cut-off mechanisms. The worst-case scenario of a re  
is therefore effectively prevented.
The unlimited functionality of a photovoltaic plant is crucial for 
its efciency. The Transclinic xi+ device series continuously 
 calculates/determines the current coming from individual 
strings or string groups as well as the voltage in a photovoltaic 
plant thus allowing a very detailed monitoring. 
Disturbances that might cause a decrease in prots are thus 
identied and can be eliminated without delay.
Depending on the model, the Transclinic xi+ has between 4 and 
14 inputs for measuring currents of up to 30 A per string.  
The current measuring is particularly reliable thanks to very 
 linear and stable shunt resistances. 
The current and voltage measuring data are transmitted via 
ModBus RTU over EIA RS-485. Evaluation and presentation of 
the data can be done using the PV Plant software.
In addition to current and voltage, it is possible to control 
 optional analogue and digital signals and to operate signalling 
devices via a digital output. The information obtained about 
the operational status provides a reliable monitoring mechanism 
for the photovoltaic facility, which will help you to optimise 
your yield.
The innovative photovoltaic junction box for crystalline photo-
voltaic modules is exible and can be easily tted for optimised, 
secure production processes.
The box enables a fully-automatic process, which accelerates the 
production of photovoltaic modules and reduces the production 
costs. But also in the case of a manual assembly signicant 
 optimisations can be realised. The two-section housing design 
makes it easier to manufacture and to replace during repairs.
The photovoltaic junction box was developed with two different 
connection principles. It is available as a version for ribbons that 
are fed through the backsheet of the panel, as well as for ribbons 
that are initially laminated over, and then prepared for the fully-
automatic production line using a simple milling process to 
 expose the contacts.
A new, patented sealing and strain-relief system has signicantly 
increased the wire withdrawal forces, in comparison with the 
force needed for a conventional cable gland connection.
With the automatic interlock it is impossible to unintentionally 
loosen the connection.
The PV junction box is certied by TÜV Rheinland in accordance 
also the with DIN V VDE V 0126-5:2008-05 and the new  
pr EN 50548 UL approval in accordance with UL 1703 is given.
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Lightning and Surge Protection
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System monitoring for PV systems
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Photovoltaic junction box
Lightning & surge protection on the PV generator side (DC) and power supply side (AC) Module connection for efcient installation WM JB PVM Continuous performance monitoring of PV systems with Transclinic Xi+ monitoring systems
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Signal Connection
Customised signal interfaces which ensure a reliable IP 20 
 connection are needed for input interfaces for signals such as 
temperature, or positioning and output interfaces for controlling 
 actuators.
The OMNIMATE Signal plug-in connectors are available with 
an extra screw ange, or lock and release lever for a reliable 
 fastening. For PCBs with SMD components, the connection 
 system is also available for the reow soldering process.  
The 3.5 mm to 5.08 mm pitch provides a number of solutions 
which can be combined with the SL-SMT male header suitable 
for reow.
The LSF PCB terminals in pitch 3.5 mm to 7.62 mm with PUSH IN 
connection system from the OMNIMATE Signal product range 
can be soldered using the wave soldering process or the zero-
compromise reow-soldering process. For PCBs produced  
with the wave soldering process, there is an extensive range of 
screw and PUSH IN spring connection systems in pitch 3.5 mm 
to 5.08 mm.
The wide range of OMNIMATE Signal device connectivity 
 products are optimised to suit the application, with simple 
 processing, reliable application and space-saving installation.
The complete range of M8 and M12 round plug-in connectors 
with protection class IP 6x from Weidmüller are used in eld 
 wiring for sensors and actuators.
Device connectors: OMNIMATE Signal terminals and connectors 
Field wiring: M8, M12, M16 and M23 connectors in IP 67
DC Power Connection
DC Power Connection
Lightning and 
Surge Protection
Photovoltaic junction box
System monitoring 
for PV systems
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AC Power Connection
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Data Connection
The electrical connectivity inside the device between the 
 individual function units is provided by our OMNIMATE Power 
connection components. The large range of PCB terminals 
and plug-in connectors provide numerous connection options, 
with a high clamping force and optimum use of space.
When guiding currents of different heights through the device or 
electrical cabinet wall, OMNIMATE Power feed-through terminals 
are the universal solution for wire cross-sections of between 
4 mm² and 95 mm².
Our Heavy Duty Connectors (HDCs) from the RockStar
®
 product 
family are used for the external AC mains connection, with IP 6x 
protection class.
Thanks to a special die cast alloy and multi-stage surface sealing, 
the HDC housings are perfectly protected for external power 
 connections to the mains supply.
The interlock system is manufactured from stainless steel. 
This guarantees a long lifespan with high resistance to corrosion 
and impact.
The RockStar
®
 plug-in connectors are available with a straight on 
or side wire outlet direction.
High reliability, protection against failure, and availability 
are the basic requirements of photovoltaic inverters.
When networking a range of components in a photovoltaic 
system, it’s very important that reliable and secure data 
transfer is guaranteed. 
Suitability for industrial use and connectivity which is 
 dependable are the essential criteria for efcient  
data cabling and data exchange in photovoltaic systems. 
Our Industrial Ethernet components offer a higher level of 
quality and operational safety than needed for a desktop 
PC, for example. Weidmüller’s product range also includes 
solutions in IP 67 for connecting networks outside 
the inverter housing.
For this application, we recommend our M8, M12, M16 and 
M23 connectors in IP 67 protection, which are also available 
in an over moulded version with assembled cables. We 
 supply a range of RJ45 connectors with crimp or IDC wire 
connections, according to Cat. 6A/Class EA and in protection 
classes ranging from IP 20 to IP 67 for connecting networks.
We supply network components for many applications, be it  
the STEADYTEC
®
 plug which can be assembled without any 
tools, or the IP 67 classied plug with an impact-resistant, 
die-cast housing.
Device connectors: OMNIMATE Power terminals, connectors and feed- through device terminals 
Field wiring: RockStar
®
 heavy duty, plug-in connectors
Device connectors: OMNIMATE Signal terminals and connectors 
Field wiring: M8, M12, M16 and M23 connectors in IP 67 mechanically protected RJ45 connector
Signal and Data Connection
Signal and 
Data Connection
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3. + 4.
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AC Power Connection


