Study of ZnO arrester model for steep front wave

Measurements were performed to obtain the response of an arrester block to a steep front impulse current (1/2 μsec), a 4/10 μsec impulse current and a standard impulse (8/20 μsec). As a steep front wave response model, the conventional model, the IEEE model, and a nonlinear inductance model have been studied. The method of building an arrester block model is explained in this paper. The nonlinear inductance model proposed has an accuracy of 99% in calculations of steep front impulses in block model studies. This model can be built easily and simply