Вестник НТУ ХПИ_55 2010_Оригинал_макет - Науково-Ñ‚ÐµÑ Ð½Ñ–Ñ‡Ð½Ð° ...

ility on breaking strength of its paper-oil isolation are presented. it allowsputting into practice the tg δ parameter as a criteria at estimation of operationquality requirements in power cables isolation.Index terms – power cables, paper-oil isolation, dielectric losses, estimation.Naniy V.V., Miroshnichenko A.G., Yukhimchuk V.D., Dunev A.A,Maslennikov A.M., Egorov A.V., Potochkiy D.V.DESIGNING AND TESTING ASPECTS IN ELECTRICMOTORS WITH ROLLING ROTOR.Researches of dynamic characteristics in the motor with rolling rotor(MRR) are resulted for eight and six slotting machine designs. Magneticfield distribution in the motor are got up taking into account non-uniformityof air-gap for different types of motor designs and their comparative analysisis resulted.Index terms – electric motor with a rolling rotor (MRR), dynamiccharacteristics, air-gap, non-uniformity, six (eight) slotting machinedesign.Nesterenko I.A.DESIGNING OF OPTIMAL ELECTROMAGNETIC SYSTEMSOF DRUM SEPARATORS.The possibility of the purposeful synthesis of drum separators withopen multi-pole electromagnetic systems is investigated on such criteria ofoptimality as minimum weight of active material and minimum power consumptionin steady-state thermal regime. We derive the Equations of optimalrelations between objective function and parameters of the electromagneticsystem are got up.Index terms – drum separator, electromagnetic systems, designing,optimization.Sakhno A.A.MATHEMATICAL MODEL FOR PREDICTION OF THEREMAINING RESOURCE OF CURRENT TRANSFORMERS OF330-750 kV WITH OIP INSULATION.This paper describe the results of the Mathematical model of currenttransformer 330-750 kV with OIP insulation is resulted for prediction of itsremaining resource. The model is based on theoretical law of the Gompertzdistribution and Cox’s proportional hazards one. It is intended for currenttransformers on-line monitoring systems for improving their diagnostics.ISSN 2079-3944. Вісник НТУ "ХПІ". 2010. № 55153