Overvoltage protection method of direct-current electgrical circuits with currents of even tens A, particularly photovoltaic electric power sources and overvoltage protection device of direct-current electgrical circuits with currents of even tens A,

摘要

the invention relates to the way prepetovu00e9 protection stejnosmernu00fdch electrical circuit with currents in the tens and, in particular, photovoltaic sources of electric power.in which the in device for disengaging current track in place prepetovou protection (x) zu00e1mernu00e9ho adjournment of the jet trajectory.during uncoupling current pathways in the place (x) between the rozpojovanu00fdmi jet runway elements limit value electric currentthereby gaining is potlacu00ed the uncontrolled arcing between rozpojovanu00fdmi cu00e1stmi jet trajectory.the invention also relates to the device for prepetovou protection stejnosmernu00fdch electrical circuit with currents in the tens and, in particular, photovoltaic sources of electric power.which contains the contacts (00) for vodicu chru00e1nenu00e9ho got electrical circuit between the contacts (00) is usporu00e1du00e1na current path with at least one varistorem (1),between varistorem (1) and a contact (00) is vytvoreno place (x) zu00e1mernu00e9ho recess jet runways with pu00e1jenu00fdm link solid element surface jet runway and surface movable element jet runwaythe (x) zu00e1mernu00e9ho recess jet runway is prirazeno teplotne initiated separation device (3) with a member of the odpruu017eenu00fdm akcnu00edm,which mobile element jet runway develops strength (f) in the paralelne with plane pu00e1jenu00e9ho connections of solid element and moving element jet runway surface jet trajectory.the (x) zu00e1mernu00e9ho recess jet runway is paralelne prirazen kapacitor (16).