@thesis{thesis,
		author={Hutagalung  D.Fadel Sion and Pramono  Tri Joko},
		title ={KOORDINASI EFEKTIF JARAK LIGHTNING ARRESTER PADA
GARDU INDUK AREA DURI KOSAMBI},
		year={2019},
		url={http://156.67.221.169/1593/},
		abstract={As one of electrical power transmissionsub systems from power plant to consumers , substasion has an important role which is to elevate voltage from power plant and then proceed to drop voltage from transmission line to consumers.Duri Kosambi substation inter-substations within the area has
reliability value the must be maintained so that faults likely causing electrical outage on the consumers do not occur.Transformer on a conventional substation is installed on the Switchyard , therefore it is susceptible ti lightning strike.To
protect transformer against lightning surge , lightning arrester is used.Installation of lightning arrester on the substation transformer has to regards several matters , among which are BIL (Basic Insulation Level) from transformer and arrester
placement distance itself.According to SPLN 7:1978 the maximum distance between lightning arrester and power transformer for arrester with 150kV rated voltage is less than 80m.While according to the calculation and the condition in
switchyard , the distance between arrester and transformer are 37,5m and 3,15m.Corresponding with protection standards , so the transformer protection against lightning surge fault is exceptional.}
		}