PENENTUAN SETTING WAKTU KERJA OVER CURRENT RELAY (OCR) DI GENERATOR 11 KV 80 MVA PLTU TANJUNG ENIM KAB. MUARA ENIM SUMATERA SELATAN

Abstract

Electric power is one coincidence current principal, therefore power must be provided
automatically by paying attention to the quality of both the voltage and frequency and reliability to maintain the continuity of power supply voltage required protection system that fits the needs, protection function is to localize the disorder so the only area impaired are freed from the power circuit, and also to consider the level of security against humans. Protection system must be subject to the condition that is fast, secure or stable, sensitive, reliable, and selective so that if an interruption occurs, the protection will work in accordance with its function as a safety. This final project is the calculation and analysis of over curent relay adjustment relay at 11 kV generator at the power plant enim promontory, and can result : I
f
3Ø = 1033882,545  Ampere,  I
2Ø = 516941,4634 Ampere, one phasa to ground = 297,120,56 Ampere  so that the results of the calculations and the correct settings expected if
f
an interruption occurs the protection relay will work fine in accordance with the protection function as a safety.
Keywords: setting over current relay (OCR)