engleski

Surge Protection of Low-Voltage Systems Connected to Overhead Line

A procedure of choosing the appropriate surge protective device for low-voltage systems is presented. For typical surge protection application an appropriate EMTP model is devised. The energy overload is calculated for a surge protective device following a simulation of the lightning effect. In this way it is possible to determine a required class for a surge protective device in question. The procedure is tested on some typical overhead low-voltage network. According to calculation results and very good service experiences, Class II surge protective devices can be adequately used for service entrance of buildings.

overhead low-voltage network; surge protective device classes; probability of energy overloading; procedure; protected building

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