SURGE PROTECTION OF BUILDINGS CONNECTED TO AN OVERHEAD LOW-VOLTAGE NETWORK

Viktor Milardić; Ivo Uglešić; Ivica Pavić

doi:10.37798/2006553392

Authors

Viktor Milardić
Ivo Uglešić
Ivica Pavić

DOI:

https://doi.org/10.37798/2006553392

Keywords:

class I SPD, class II SPD, overhead low-voltage network, probability of energy overloading, protected building, surge protective device (SPD)

Abstract

There are three classes of surge protective devices for low-voltage systems. The method for the selection of surge protective devices presented can be used to determine which class of surge protective device should be installed in the service entrance of a building. This method has been tested on a typical overhead low-voltage network in Croatia. Based upon good experience with Class II surge protective devices in the transformer stations of this network, it can be concluded that Class II surge protective devices are quite suitable for buildings connected to a low-voltage network.