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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
Title Development Pole Transformer with Automatic Tap Changer
Authors Won Nam-Koong ; Sung-Woo Lee ; Moon-Jong Jang
DOI http://dx.doi.org/10.5207/JIEIE.2013.27.9.108
Page pp.108-113
ISSN 1225-1135
Keywords Pole Transformer ; Tap Changer ; Voltage Change ; OLTC ; SVR
Abstract Change of supply voltage, customer load, output of distributed generation, etc cause voltage change in distribution system. OLTC and SVR are usually used to supply normal voltage at customer. But usage of these devices is inefficient and uneconomical in certain circumstances. To solve this problem, new pole transformer which has automatic tap changer is developed. The transformer changes tap when voltage changes. And it has latch switch and reactor for supplying power without outage. To verify normal operation of tap changer, test is conducted. SVR and 50kVA load is used for test.