C.S. Psomopoulos (1), G.C. Ioannidis (2) and Y. Karras (3)
Technical Education Institute of Piraeus, Department of Electrical Engineering, High Voltage Lab (1), Thivon 250 & P. Ralli, GR-122 44 Egaleo, Greece, cpsomop@teipir.gr
Technical Education Institute of Piraeus, Department of Electrical Engineering, Electrotechnical Applications Lab (2), Technical Department, ELMA N. Karras SA(3), Thivon 250 & P. Ralli, GR-122 44 Egaleo (2), Greece, 34a Averof str, GR-14232, N. Ionia (3), Greece, gioan@teipir.gr (2), yannis.karras@elma.gr (3)
Abstract
The Public Power Corporation (PPC), operator of the Greek low voltage electricity distribution network still does not accept LV NH fuses with rated voltage 400VAC which is the network’s nominal operating voltage. Based on a rather old internal standard (a PPC ‘s standard of 1975), PPC is using fuses with 500V AC rated voltage and rejects the fuses with 400V rated voltage. This work is aiming to evaluate the reduction of the low voltage network losses in case that PPC used fuses with rated voltage 400VAC instead of 500-690VAC. The evaluation was based on statistical data since there are no records about the actual number per size of installed fuses, or the average load per fuse. Even though the evaluation presents an uncertainty, the results showed that the electricity losses reduction is not negligible and the use of fuses with rated voltage of 400V instead of 500-690V will increase the network’s efficiency.
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