Title of article :
Calculation of the internal thermal resistance and ampacity of 3-core screened cables with fillers
Author/Authors :
Anders، نويسنده , , G.J.، نويسنده , , Napieralski، نويسنده , , A.، نويسنده , , Kulesza، نويسنده , , Z.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
All 3-core cables require fillers to fill the
space between insulated cores and the belt insulation or a
sheath. The equations given in IEC 287 and in the Neher-
McGrath paper for the internal thermal resistance of 3-core
cables were developed for paper insulated cables. For such
cables, it was assumed that the insulation and filler materials
have the same thermal resistivities. In reality, in 3-core
cables a variety of materials are used as fillers. The majority
of these will have a higher thermal resistivity than the
insulation. In the previous paper, a new formula was
developed to compute the value of the internal thermal
resistance of belted cables taking into account the thermal
resistivity of the filler. In this paper, screened cables are
considered and a new formula for the computation of the
internal thermal resistance of such cables is presented. The
effect offiller resistivity on cable ampacity is also discussed
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY