- Country of manufactureSlovenia
ETITEC OVERSTRAIN LIMITERS CATEGORY A
Limiters of an overstrain ETITEC are intended for protection of the industrial and household equipment, and also other electric devices against influence of retension owing to atmospherics or switching retension. A basic element of the limiter of an overstrain of ETITEC is the varistorny element. The Varistorny element is made of ZnO zinc oxide, and its resistance depends on tension on its plugs.
Limiters of an overstrain ETITEC of group A are the device intended for protection of the equipment mounted on air and cable lines of low tension where firmness of isolation does not exceed 6 kV. Limiters of an overstrain ETITEC A are intended for mounting outside of the protected buildings, in places where the air-line passes into cable. In air-lines it is necessary to mount limiters at distance no more than 300 m from each other. Section of the connected conductors should be not less than 10 sq. mm (Cu) and 16 sq. mm (Al) (it is important: the limiter with a signaling device of operation needs to be attached to a ground loop a pigtail. Use of tires or monolithic wires is inadmissible). ETITEC A limiters are recommended to be used in places of grounding of PE or PEN. In other cases it is necessary to ground separately (PE or PEN) the overstrain limiter. Resistance on a ground loop should not exceed 10 Ohms.