Title :
New MV cable design for wet environments in underground distribution systems
Author :
Teixeira, M.D.R., Jr.
Author_Institution :
Ficap-Fios e Cabos Plasticos do Brasil SA, Rio de Janeiro
fDate :
4/1/1990 12:00:00 AM
Abstract :
The development of new wet design MV power cables, up to 35 kV, using EPDM compound as insulation and longitudinal water tightness is discussed. The combination of the cable design and the type of insulation compound makes it possible to reduce the insulation thickness in such a way as to have an electrical stress at the conductor of 4 kV/mm, which is significantly greater than that used in MV distribution cables. The reliability of this design, the cable, and EPDM´s formulation was demonstrated in a wet location, without metallic water barriers. The mini-installation of model cables in servicelike conditions to estimate the ageing rate is presented and discussed
Keywords :
ageing; cable insulation; cable testing; electric breakdown of solids; insulation testing; organic insulating materials; polymers; power cables; reliability; underground cables; underground distribution systems; MV cable; ageing rate; cable testing; development; electric breakdown; electrical stress; ethylene-propylene diene monomer; longitudinal water tightness; organic insulating materials; polymers; power cable insulation; reliability; underground distribution systems; wet design; wet environments; Cable insulation; Conductors; Costs; Degradation; Polyethylene; Power cable insulation; Power cables; Trees - insulation; Underground power cables; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
