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