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This paper undertakes the study of failures in energy meters installed in low-voltage power network. The objective is to find a way to reduce the high failure rate that this type of equipment currently presents in the eastern zone of the departmento de Caldas, especially in the areas of greatest keraunic level. The methodology implemented enables root cause analysis, the proposal of remedial actions...
The paper deals with the assessment of the critical length between SPD and the equipment to be protected with the aim of proper coordination of the SPD protection level and the impulse withstand voltage of the equipment. Main concern has been paid to influence of different steepness of the front of lightning current and the SPD earthing conditions. In order to assess the relation between considered...
This paper presents an investigation of lightning overvoltages on low-voltage (LV) networks installed in urban areas. The combined effect of lightning-induced voltages and transferred lightning surges through distribution transformers is taken into account. It is shown that an accurate estimate of lightning-induced voltages on LV lines require the consideration of the medium voltage line and of its...
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