Results 161 to 170 of about 138,563 (198)

Ampacity Application Considerations for Underground Cables

IEEE Transactions on Industry Applications, 2015
Underground power cables are routinely used in many types of electrical power systems. In many cases, unique considerations and analysis are required in determining the ampacity of underground cable applications. This paper examines these considerations in low- and medium-voltage electrical systems and provides examples of actual system applications.
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Ampacity Calculations for Deeply Installed Cables

IEEE Transactions on Power Delivery, 2010
In this paper, a new method is proposed for ampacity calculations of deeply installed cables. Two factors make these types of installations different from more common situations of cables located up to five meters underground. On the one hand, the time constant of the soil layer above the cable trench is very large, resulting in a very slow conductor ...
Eric Dorison, George J. Anders, Frederic Lesur   +2 more
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AMPACITY OF CABLES

2003
Ampacity is the term that was conceived by William Del Mar in the early 1950s when he became weary of saying ‘‘current wrying capacity” too many times. AEE/IPCEA published the term “ampacity” in 1962 in the “Black Books” of Power Cable Ampacities [13-11.
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Ampacity of aerial bundled cables

Proceedings of Canadian Conference on Electrical and Computer Engineering CCECE-94, 1994
Problems associated with the proximity of buildings and trees and the clashing of bare conductors have stimulated the world-wide trend towards the use of insulated conductors (cables) for the overhead distribution of electric power. An IEC Guide, Publication 287-2, proposes a method for determining the current-carrying capacity of a single core or ...
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Ampacity of Cable in Covered Tray

IEEE Transactions on Power Apparatus and Systems, 1984
Solid tray covers are used in power generating station cable tray systems. The published literature contains little data about the effects of tray covers on cable operating temperatures, and the National Electrical Code provides limited guidance.
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Interactive tutorial for calculating cable ampacity

IEEE Computer Applications in Power, 1991
The Cable Ampacity Tutorial (CABAMP), which describes the procedure for calculating the steady-state ampacity (current) rating of underground transmission cable systems, is discussed. This interactive tool allows engineers to reference the tutorial at the same time they are performing calculations.
E.C. Bascom, T.J. Rodenbaugh, H.J. Brown
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Cable Ampacity Calculations: A Comparison of Methods

2015 IEEE Rural Electric Power Conference, 2015
When designing electrical power systems, it is often necessary to determine underground cable ampacity. Various methods are in use today, including computer simulation, ampacity tables, and a method that has recently been suggested that includes the effects of moisture migration through soil.
Carson Bates, Keith Malmedal, David Cain
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Ampacities of Multicondutor Cables in Trays

IEEE Transactions on Power Apparatus and Systems, 1972
The presently available rules for prescribing ampacities of cables in trays have been found unduly restrictive for light to medium tray loading, leading to wide disregard of such derating for all loadings. Here is presented a method, founded on sound heat-transfer technology, and experimentally verified, for such ampacity determination.
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Including Soil Drying Time in Cable Ampacity Calculations

IEEE Transactions on Industry Applications, 2016
Previous papers proposed a method to find the maximum possible dried area of soil expected due to heating by underground cables. A method was also proposed to include this dried soil area in cable ampacity calculations. This assumed that cables would be loaded 100% of the time. To dry soil to the maximum possible extent may take very long time periods,
Carson Bates, David Cain, Keith Malmedal
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Pipe-type cable ampacities in the presence of harmonics

IEEE Transactions on Power Delivery, 1993
This paper explores the effect of harmonics on high-pressure fluid filled pipe-type transmission cable ampacity. Industry currently calculates the current carrying capacity of underground power cable based on the assumption of a purely sinusoidal 60 Hz current.
J.A. Palmer, R.C. Degeneff, T.M. McKernan, T.M. Halleran   +3 more
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