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Journal : MEKTRIK

ANALISIS PEMBEBANAN TRANSFORMATOR GARDU SELATAN KAMPUS UNIVERSITAS TADULAKO Rizky, Muhammad; Mukhlis, Baso; Adam, Ahmad Antares
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Publisher : MEKTRIK

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Abstract

The unbalanced load in electric power distribution system always happen and it is caused by single phase loads on low voltage system. The effect of the unbalanced load is appear as a neutral current. These neutral current cause losses, those are losses caused by neutral current in neutral conductor on distribution transformers and losses caused by neutral current flows to ground. In conclusion, when high unbalanced load happened, then the neutral current that appear is also high.
PERBANDINGAN NILAI TAHANAN PENTANAHAN PADA AREA REKLAMASI PANTAI (CITRALAND) Mukmin, Mirwan; Kali, Agustinus; Mukhlis, Baso
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Publisher : MEKTRIK

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Abstract

Abstract Grounding system is a system that connects conductive connection systems, equipment and installations bodies with earth / ground so as to secure the human from electric shock, and secure the installation components from the dangers of the voltage / current abnormal. Therefore, the earthing system becomes an essential part of the power system. The study was conducted to measure and compare the value of grounding resistance on an area of reclaimed and non-reclaimed beach in a residential area of ​​Citra Land, PT. Ciputra Surya, JO. that will facilitate the future design of earthing systems. Types of electrodes used in the measurement of the electrode is a single rod with a diameter of 0.15 m and a length of 1.4 meters, which were planted at a depth of 0.25 / 0.5 / 0.75 / 1 meter from the ground, measuring instruments used are analog Earth Resistance Tester 3235. Grounding resistance value measurement performed ten times in order to get the value can be averaged so get earth resistance value desired. Value of the grounding resistance measurement results reclaimed land amounted to 3.03 Ω, while the non-reclaimed land by 5 Ω. For the value of soil resistivity on the reclaimed land of 0.455 Ω, while for non-reclaimed land of 1.481 Ω.   Keywords: Reclamation, earthing, electrode and soil resistivity.
ANALISIS PEMBEBANAN TRANSFORMATOR GARDU SELATAN KAMPUS UNIVERSITAS TADULAKO Kongah, Dendi; Sarjan, Muh.; Mukhlis, Baso
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Publisher : MEKTRIK

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Abstract

Abstract Electrical system Tadulako University has problems voltage drop and load unbalance caused by the distance network connecting the distribution substation and the supplied building is so far. Moreover, the load distribution is irregular resulting in drop voltage and load imbalance. This study is specifically addressed to discuss the problems occurred in Gardu Selatan Universitas Tadulako, where the substation is supplying the load to the Fakultas Pertanian, Fakultas Kehutanan, Fakultas Teknik, Fakultas MIPA, FKIK, and several other new buildings. The method used is to measure the current and voltage on the transformer and also on the panels in the building who experience a voltage drop by using Amperes pliers. The results of the measurements and analysis are that the 185 Volt low voltage drop has passed the standard provisions PUIL where the voltage drop across the low voltage network is 4%. This is because the area supplied by the substation south very wide and long enough network that reaches 804 meters so far has exceeded the provision SPLN maximum of 350 meters. It is therefore necessary to transfer electricity network path between distribution substations closer to the buildings in the supply. To avoid load unbalance it is necessary precision in any additional load on each phase and phase transfer loads to smaller current values ​​measured during peak load.   Keywords: Drop Voltage, Load unbalance, distribution substation.