CAPACITY ANALYSIS OF BACKUP GENERATOR IN WORKSHOP AND LABORATORY BUILDING OF POLNAM ELECTRICAL DEPARTMENT

VICKY SALAMENA (Department of Electrical Engineering, Politeknik Negeri Ambon)

Multicience
Vol. 2 No. 07 (2021): INTERNATIONAL JOURNAL OF MULTISCIENCE -OCTOBER EDITION

Power electric supply to workshoop and laboratorium Electrical Department in Politeknik Negeri Ambon gives by Goverment Electric Company (PLN). Now electric power capacity at PLN not satisfy to support demmand on Ambon island, because derating of prime over (diesel engine), the engine has broken and increase of demmand. Consequence of this broblem is adjustment at power delivery from PLN to demmand, so happen cut-off electric power to a part of demmand. Impact to Electrical Department workshoop and laboratorium in electric power supply not continu. For hanging this problem, make back-up power supply with added generator-set at rating needs it. This research is calculating capacity of generator-set agree with electric capacited of workshoop and laboratorium Electrical Department. Total of electric capacity in kilo-volt-ampere (kVA) be obtained from accumation of electric equipment in the workshop and laboratorium. The results of this study are to obtain protection on the main panel of 80 A, the cross-sectional area of ​​the main panel feeder is 250 mm2 and the generator capacity is 50 kVA at a phase-to-phase voltage of 380 V, AC, three-phase four wire generator type. The model or type of grounding used is TN-S.