Surge protection of resistive loads in low voltage power installations
Keywords:
Low voltage power installations, overvoltages, surge protective devicesAbstract
Advanced electric equipment widely used nowadays both in residential as well as in industrial low-voltage power systems have weak surge withstand capability. The electromagnetic sensitivity of these devices requires an appropriate protection against voltage and current surges. Analysis of protection performances of surge protective devices arranged in one-stage and two-stage protection system will be given in the paper for case of resistive load. Analysis will be performed using MATLAB for different values of resistive load’s active powers widely used in low voltage power installations. Performed analysis should to point on possibilities and limitation for proper overvoltage protection.
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