electrical power cable engineering (8)

... outer portions of a cable. They serve as electrical and mechanical protection for the underlying cable materials. There are many materials that may be used for cable jackets. The two ... portion of a cable. Sheath is properly the term that applies to a metallic component over the insulation of a cable. An example is the lead sheath of a paper insulated, leadcovered c...

Ngày tải lên: 21/03/2014, 12:09

Ngày tải lên: 01/01/2014, 01:29

... Bemstein, adapted from class notes for Power Cables 13 Copyright © 1999 by Marcel Dekker, Inc. CHAPTER I HISTORICAL PERSPECTIVE OF ELECTRICAL CABLES Bruce S. Bernstein and William ... crosslinked polyethylene cables in the distribution classes are fresuently made with the same wall thickness as today’s impregnated paper cables 6. EXTRUDED DIELECTRIC POWER CABL...

Ngày tải lên: 21/03/2014, 12:09

... from class notes for Power Cable Engineering Clinic,” University of Wisconsin Madison, 1992. [2-21 Landinger, Carl, adapted from class notes for Power Cable Engineering Clinic,” ... 5.1 Medium Voltage Sbielded Cables Medium voltage (5 kV to 46 kV) shielded cable appears to be a relatively simple electrical machine. It does electrical work bu...

Ngày tải lên: 21/03/2014, 12:09

... The Okonite Company, Bulletin EHB-90, 1990. Engineering Data for Copper and Aluminum Conductor Electrical Ca- [3-5] Southwire Company Power Cable Manual, Second Edition, 1997 [3-61 American ... Nickel 1. INTRODUCTION 4.3 25.87 7.8 46.9 The fundamental concern of power cable engineering is to transmit current (power) economically and efficiently. The choice of th...

Ngày tải lên: 21/03/2014, 12:09

... the length of cable in ohms cos 0 = Power factor of the load XL = Inductive reactance of the length of cable in ohms 2.9 Total Cable Reactance The total cable reactance ... of the cable in ohms per foot. 52 Copyright © 1999 by Marcel Dekker, Inc. x = xc + x, (4.15) 2.10 Cable Dissipation Factor In cable engineering, the small amount of p...

Ngày tải lên: 21/03/2014, 12:09

... adapted from class notes from Power Cable Engi- neering Clinic,” University of Wisconsin-Madison, 1997. [5-21 Kenneth N. Mathes, adapted from class notes from Power Cable Engi- neering Clinic,” ... Transmission cables, which are defined as cables operating above 46 kV, have traditionally used paper / oil systems as the insulation. The paper is applied as a thin film wou...

Ngày tải lên: 21/03/2014, 12:09

... that comprise water and electrical trees differ. AC breakdown strength is commonly performed on fill size cables as an aid in characterization. For full size cables, it is common ... mil, or kV per mm. For full size cable, it is common to merely report the kV at which the cable has failed. Hence if a 175 mil wall cable fails at 52.5 kV (or 52,500...

Ngày tải lên: 21/03/2014, 12:09

... CHAPTER 7 SHIELDING OF POWER CABLES Lawrence J. Kelly and Carl C. Landinger 1. GENERAL Shielding of an electric power cable is accomplished by surrounding the assembly ... must be provided in the cable design to ensure that the cable will activate the back-up protection in the event of any cable fault over the life of that cable. There is also the concer...

Ngày tải lên: 21/03/2014, 12:09

... specifications for power and control cables have been prepared in the United States by various industry organizations since the early part of the twentieth century. Electrical cables are ... pertain to power cables. Their first specifications were written for paper insulated cables for medium voltage applications. Presently their specifications cover all forms of laminat...

Ngày tải lên: 21/03/2014, 12:09