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- W2891430880 abstract "This paper presents the evaluation of the earthing system of the distribution substations in Ekpoma, Nigeria. The earthing resistance of each substations was tested and most of the substations facilities earthing resistance were measured using insulation resistance tester. The data of all transformers in Ekpoma town were collated and each substation earthing resistance calculated. It was discovered that transmission and distribution lines were in a rather poor state with bad fittings and some of the substations lightening arresters were observed broken, feeder pillars also condemned, almost all the low voltage side (415V lines) to the end users at each of the relief substations has no multiple earthing on the neutral to protect against lightening strokes. However, earthing resistance values varies with the time of the year; it is high during the dry season and low during raining season. The value of the earth resistance depends largely on the type and resistivity of soil. The minimum earth resistance of 2.0 ohms below was used as a standard to evaluate the earthing resistances of each of the substations." @default.
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- W2891430880 date "2018-05-31" @default.
- W2891430880 modified "2023-09-27" @default.
- W2891430880 title "Evaluation of Earthing System of the Distribution Substations in Ekpoma, Nigeria" @default.
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