STUDI SUSUT UMUR TRANSFORMATOR DISTRIBUSI 20 kV AKIBAT PEMBEBANAN LEBIH DI PT.PLN (PERSERO) KOTA PONTIANAK
Abstract: Distribution
transformer has a very crucial role on electrical power supply distribution
system. In 1972, International Electrotechnical Commission (IEC) 354 claim if a
transformer get a stable load on it’s identification power with ambient
temperature 200C, transformer hot spot temperature will reach 980C and it’s
lifetime became 20 years or 7300 days with normal loss of life 0,0137% each
day. Daily average ambient temperature in Pontianak is 300C, causing
transformer’s load has to be adjust to avoid high loss of life. Distribution transformer which installed on
feeder Raya 10 has 11 units operating with daily load 80% - 100% of
identification power and 8 units with over 100% daily load of identification
power. Base on research that has been done we’ve come to conclusion that
transformer which operating in Pontianak should not gain 91% load of
identification power cause will decreasing the transformer lifetime drasticly.
Penulis: Parlindungan Gultom
Kode Jurnal: jptlisetrodd170070
