EVALUASI SISTEM PROTEKSI ARUS LEBIH JARINGAN 20 KV DI GARDU INDUK CIAMIS

• Main Authors: , Faizal Iswara, ST, , Ir. I Nengah Sumerti
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2011
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/88351/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=50440
• Institution: Universitas Gadjah Mada

Network distribution system 20 kV at Gardu Induk (GI) Ciamis use over current relay (OCR) to protect short circuit between phase to phase and threephase, mean while ground fault relay (DGR) for disturbing phase to the ground at the main feeder and fuse or fuse cut out at branch of feeder. To day, network condition (2009) is very different from before when it operated so, need evaluation to load current and short circuit at last condition, especially at feeder Kawali 4. Based on the last condition, if done the great recalculation short circuit at many points, at feeder Kawali 4 to get new setting for over current relay (OCR) at basic of feeder and the calculation above done manually. According to coordination of analyzed result that all fuses lighted (rating 15 T, 20 T, 30 T, 40 T dan 50 T) still need enough load and in good coordination. Setting of over current relay (OCR) at basic of feeder need appropriated with new load. With current setting 400 A, especially for standard inverse (SI), time multiplier setting (TMS) = 0,1 second, enough coordination result with the fuse at branches of feeder.