Abstract
The requirements for efficient overvoltage protection of electronic devices in low-voltage power systems
Highlights
Advanced electric and electronic equipment widely used nowadays both in residential as well as in industrial low-voltage power systems has weak surge withstand capability [1, 2]
In order to avoid negative effects of surges to the equipment, surge and overvoltage protection is required. This protection relies on application of surge protective devices (SPDs)
In order to assure uniform, meaningful and reproducible surge testing of equipment and/or SPDs, it is necessary that this variety overvoltage protection system, comprehensive analysis of surges be modelled with a few representative surges [3]
Summary
Advanced electric and electronic equipment widely used nowadays both in residential as well as in industrial low-voltage power systems has weak surge withstand capability [1, 2]. Protection of electronic equipment from upset and damage caused by surges in low-voltage AC power systems is an important problem in electromagnetic compatibility. In the race for lower protection and clamping voltages, equipment manufacturers install varistors with very low protection voltages, which subsequently cause their low energy absorption capability This kind of built-in varistors may be thermally damaged when high voltage surges emerge [9]. In order to avoid negative effects of surges to the equipment, surge and overvoltage protection is required This protection relies on application of surge protective devices (SPDs). It is mostly based on metal oxide varistors (MOV), but other types such as: gas discharge tubes, avalanche diodes, triggered-spark technologies, memristor-spark-gap [10] etc. In order to overcome these problems, solutions and requirements for efficient overvoltage protection are given and described in the paper
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