SPC PV is a type 1+2 lightning arrester as per the EN 61643-1, which during surge effects can protect positive and negative busbars of photovoltaic systems. As per IEC 1312-1and EN 62305, SPC PV-800 DS Lightning Arrester can used in the Lightning Protection Zones Concept at the LPZ 0-1 boundaries. Varistor sectors connected between L+, L- and PE terminals equip fitted internal disconnectors which activate when varistors fail or overheat. Partly mechanical and partly remote monitoring are used to indicate the failure of the disconnectors. Remote monitor terminals functioning
Terminations 2-3 are open and 1-2 are connected to closed contacts when SPC PV-800 DS Lightning Arrester operates correctly. One can find out when its not working properly or its damaged due to thermal overloading, when terminations 2-3 are closed and terminations 1-2 are open.