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DECREASING OF THE ELECTRICAL ENERGY LOST USING WELDING ON COGGED SURFACES


GEORGESCU BOGDAN, GEORGESCU VALERIU
“DUNAREA DE JOS” UNIVERSITY OF GALAƱI, ROMANIA

Issue:

MOCM, Number 14, Volume I

Section:

Issue No. 14 - Volume I (2008)

Abstract:

The welding on cogged surfaces between aluminium and copper to be useful so as to replace the mechanical aluminium-metal contact with the copper-metal contact. The possible applications in this respect have been analyzed for the following concrete directions: The welding of electric aluminium conductor bars; The sheathing of electric aluminium conductor bars; The sheathing of the aluminium clips. The contact electric resistance measurements made with a CA 10 Microhmeter indicates negligible values of 1-5 ”?. These values are constant in time during the exploitation of the electrical contact (tests during months of exploitations were also performed). The temperature in the contact area was measured with a Therma Cam PM 675 PAL thermographic camera. The efficiency of the sheathing is obvious if we were to consider the overheating inside the substation with only 3°C as compared to the 30-40°C normally existing there in the case of classical joints.

Keywords:

contact electric resistance, aluminium-copper joints, cold welding.

Code [ID]:

MOCM200814V01S01A0017 [0001868]


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