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Ensuring power generation Find out more at Staying mobile Find out more at:
www.de.hn/pv-systems
www.de.hn/safety-emob
Protection for photovoltaic systems Surge protection for E-mobility
Surge damage due to thunderstorms is one of the most frequent causes of damage to Mobility is changing rapidly. In the future, charging posts for electric vehicles will be an
photovoltaic systems. Protection measures increase the availability of your system and integral part of the transport infrastructure. These charging posts need to be protected
secure the yield in the long term. to ensure that electric vehicles are fit for use, even after a thunderstorm.
Protection of rooftop systems Preventing surge damage Protecting charging stations and vehicles
One of the most common forms of PV systems is the rooftop Surges resulting from thunderstorms frequently destroy Charging posts are required wherever electric vehicles are parked for a prolonged period of time, e.g. in car parks for residents,
system. Due to its exposed position, it is particularly prone to system parts such as modules, inverters and the monitoring visitors, customers, patients or employees. Lightning effects and surges pose a risk for the sensitive electronics of the charging
damage caused by direct and indirect lightning effects. Com- system. The resulting financial loss and costs are considerable, post and the vehicle visitors itself.
prehensive protection is therefore required and consists of: e.g. replacement of a faulty inverter, new installation or loss
of revenue during downtime. This can easily be prevented by In case of a thunderstorm, the sensitive electronic circuitry for the controller, counter and communication system is particularly
External lightning protection including a lightning protection concept. at risk. Satellite systems with interconnected charging points can be completely destroyed by a single lightning strike. Surges
air-termination and down-conductor system For economic reasons, lightning and surge protection during the charging process frequently not only damage the charging post, but also the electric vehicle connected to it.
should be incorporated at the design stage of PV systems
I
nternal lightning protection for lightning – subsequent installation is much more expensive and time- Electric vehicles generally have an electric strength protection level of up to 2,500 V. However, the voltage occurring during a light-
equipotential bonding using type 1 arresters consuming. ning strike may be 20 times higher. Therefore, prevent damage protection level and meet the normative requirements according to
for electrical systems In general we recommend considering IEC 60364-7-712 IEC 60364-4-44 clause 443, IEC 60364-5-53 clause 534 and IEC 60364-7-722.
which defines lightning and surge protection required for
Tip: For econmic reasons lightning and surge protection PV-systems. Especially the DC-site is focused on. Protect charging systems and electric vehicles from costly damage:
should be incorporated at the design stage of PV systems In addition, the IEC TR 63227 ED 1 has been approved by To the charge controller and battery.
– subsequent installation is much more expensive and time TC 82 – Solar Photovoltaic Energy Systems – and will be
consuming. published within 2019. This informs about the requirements To the control, meter and communication electronics of the charging system
for external lightning and surge protection of PV-systems. To the electrical system of the vehicle itself.
Surge protection for charging systems and electric vehicles
Surge protection for buildings with external lightning protection
Charging post: Charging post: Charging post: Wall box in the
Main distribution board - AC Photovoltaic system – DC Photovoltaic system – DC AC side of the inverter Power supply Information technology Information technology protected volume
separation distance is kept separation distance is not kept Universal cabling for RS 485
DEHNventil TNS DEHNguard M YPV DEHNcombo YPV ... FM DEHNguard M TNS DEHNshield TNS FM DEHNpatch BLITZDUCTOR HF 5 DEHNguard M TNS FM
Part No. 951 405 Part No. 952 565 Part No. 900 075 Part No. 952 405 Part No. 941 405 Part No. 929 121 Part No. 920 300 / 920 371 Part No. 952 405
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