Protect your photovoltaic plant reliably against surge voltages

As the operator, one wants to amortize the high investment costs involved in generating solar power within as short a time as possible. A brief surge voltage in the solar field can mean the end of the solar modules and the heart of the photovoltaic plant, the inverter.

Photovoltaic plants are generally installed in exposed locations and are therefore particularly at risk of being affected by lightning coupling in. Protection against a direct lightning strike can only be provided by a professionally installed lightning protection system. Voltage increases as a result of switching operations or inductive/capacitive coupling into conductors from a lightning strike are prevented by installing surge protection devices in the L+ and L- solar lines.

PV-SET DC


Installed in the preassembled IP65 small distribution board, type 2 surge arresters VALVETRAB VAL-MS guarantee protection for your system. Each arrester can be plugged in separately and can be tested with the CHECKMASTER to prove that it is in working order. Conventional multi-contact plug connectors are used to connect the conductors to the PV-SET DC. In order to ensure reliable equipotential bonding, the PV-SET DC has a ground connection to the small distribution board.

To protect the string inverter, the PV-SET DC is installed directly before it. Where there is a long distance between the solar generator and the inverter (> 10 m), it is advisable to install a set at each end of the conductor. In the case of string voltages up to 1000 V DC (Uocstc) and system current of up to 30 amps, it is possible to retrofit the set in any solar plant without too much installation work.

Protect your photovoltaic plant against surge voltages, and at the same time, safeguard reliability and increase the service life.




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