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More detailed information
Photovoltaics / e-mobility Specific concepts can be found in

numerous white papers alongside
Securing power generation: Surge damage due to thunderstorms is one of the industry and practical solutions. Or, in
our LIGHTNING PROTECTION
most frequent causes of damage to PV systems. Protection measures increase the LIGHTNING GUIDE, a lightning and surge protec-
PROTECTION
availability of your system and secure the yield in the long term. GUIDE 3rd updated Edition tion planning manual. This means that
More information at: you quickly have all relevant informati-
de.hn/pp-en on and solutions at your fingertips.
Protect rooftop systems Protecting charging posts and vehicles
One of the most common forms of PV systems is the rooftop Charging posts are required wherever electric vehicles are Expert pages
system. Due to its exposed position, it is particularly prone to parked for a prolonged period of time, e.g. in car parks for
damage caused by direct and indirect lightning effects. residents, customers, patients or employees. Lightning Have you already seen our expert
effects and surges pose a risk for the sensitive electronics of More information at: pages?
Comprehensive protection is therefore necessary and consists the charging post and the vehicle itself. de.hn/expert-pe
of: Concisely compiled for you, you will
In case of a thunderstorm, the sensitive electronic circuitry find current and relevant information
ƒ External lightning protection including an air-termination for the controller, meter and communication system is at a click.
and down conductor system
particularly at risk. Satellite systems with interconnected
ƒ Internal lightning protection for lightning equipotential charging points can be completely destroyed by a single
bonding using type 1 arrester for electrical systems lightning strike. Surges during the charging process fre-
quently not only damage the charging post, but also the
Tip: For economic reasons, lightning and surge protection
should be incorporated at the design stage of PV systems – electric vehicle connected to it.
subsequent installation is much more expensive and time Electric vehicles generally have an electric strength protec-
consuming. tion level of up to 2,500 V. However, the voltage occurring
during a lightning strike may be 20 times higher. Therefore, Answering questions
Preventing surge damage
prevent damage and meet the normative requirements If you have commercial or specific technical questions, please contact our commercial customer services or our experts
Surges resulting from thunderstorms frequently destroy according to IEC 60364-4-44 clause 443, IEC 60364-5-53 for lightning protection, earthing, surge protection, safety equipment and arc fault protection:
system parts such as modules, inverters and the monitoring clause 534 and IEC 60364-7-722.
system. The resulting financial loss and costs are considerab- Commercial Customer Service Technical Support
le, e.g. replacement of a faulty inverter, new installation or Protect charging systems and electric vehicles from costly Phone +49 9181 906-1462 Phone +49 9181 906-1774
loss of revenue during downtime. This can easily be damage: Fax +49 9181 906-1444 Fax +49 9181 906-1444
prevented by a lightning protection concept. ƒ To the charge controller and battery. [email protected] [email protected]
By the way: With the publication of the amended IEC ƒ To the control, meter and communication electronics of
60364-4-44 clause 443, IEC 60364-5-53 clause 534 and the charging system
IEC 60364-7-712, the installation of surge protection
measures becomes mandatory - even if there is no external
lightning protection system!

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