Kumwell KZ02.*.pv.ds is lightning arrester class l+ll (type 1+2) according to IEC 61643-11. It is designed for protection of positive and negative busbars of photo-voltaic systems against the surge effects. These arresters are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 0-2 (according to IEC 62305). Particular varistor sectors connected between terminals L+, L- and PE are equipped with fitted internal disconnectors which are activated when varistors fail (overheat). Failure indication of these disconnectors is partly mechanical (by red signaling target) and partly remote monitoring (by potential free switching contacts).
Photovoltaic System | |||||
Technical Data | KZ02.U0600.pv.ds | KZ02.U0800.pv.ds | KZ02.U1000.pv.ds | ||
Max. continuous operating voltage (DC) | Ucpv | 650 V DC | 880 V DC | 1000 V DC | |
Open circuit voltage of PV generator | UOCSTC | 540 V | 740 V | 830 V | |
Short circuit withstand | USCWPV | 25 A | |||
Lightning impulse current (10/350µs) | Iimp | 12.5 kA | |||
Norminal discharge current (8/20µs) | In | 25 kA | |||
Voltage protection level at In | UP | < 2.4 kV | < 3.1 kV | < 3.5 kV | |
Response time | tA | < 25 ns | < 48V | ||
LPZ | 0-2 | ||||
Protection type | IP20 | 20-24V | |||
Operating temperrature range | ![]() |
-40°C to + 80°C | |||
Mounting on | Din rail 35mm | ||||
Application | L+/L-, L+/PE, L-/PE |