Results 131 to 140 of about 358 (179)

Ampac Campaign Contributions to Congress — A Correction

New England Journal of Medicine, 1995
To the Editor: We have become aware of two minor errors in the data we used in our article on contributions from the American Medical Political Action Committee (AMPAC) to members of Congress (Jan. 6, 1994, issue).1 The first error occurred when we counted a contribution to a Republican named Jones as a contribution to his Democratic opponent, also ...
J, Sharfstein, S, Sharfstein
openaire   +2 more sources

Ampacities for Cables in Trays with Firestops

IEEE Power Engineering Review, 1981
This paper describes how cable ampacity is influenced by firestop materials for various cable and firestop configurations. Both solid silicone elastomer and silicone RTV foam elastomer firestops were evaluated. To determine cable derating factors, laboratory tests were performed with the cable tray fully loaded to obtain the maximum operating ...
C. Nemeth, G. Rackliffe, J. Legro
openaire   +1 more source

Improvement of ampacity of LTCC conductors

Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT), 2012
Improvement of the current load-carrying capacity can be achieved by combining different technologies in Low Temperature Cofired Ceramics (LTCC). Screen and stencil printing, full tape thickness features (FTTF) and embossing in LTCC were investigated. Silver paste conductors with 80 – 200 μm line width are included in the study.
O. Shorina, J. Müller
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Fire protection wrapped cable tray ampacity

IEEE Transactions on Energy Conversion, 1989
A method is presented for calculation of ampacity of cable in fire protection wrapped cable trays. A brief description of the model is presented. The iterative technique used for solution of the model's simultaneous transcendental equations is presented with a description of the computer program.
Phil Save, Gary Engmann
openaire   +1 more source

Cable Ampacity in Tray With Raised Covers

IEEE Power Engineering Review, 1986
Power cable tray systems in generating stations are installed with tray covers that may be raised over the tray side rail. Raising the tray cover allows installation of the cover without cutting and fitting the cover around conduits that terminate at the tray.
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Ampacity derating for underground cables

Conference Record, Industrial and Commercial Power Systems Technical Conference, 1988., 2003
A simple manual method of utilizing adjustment factors to derate cable ampacities for underground installations is presented. The ampacity adjustment factors reported are obtained based on the Neher McGrath method. Various items that affect ampacities of cables are discussed in practical terms and examples are included to illustrate the method and its ...
F. Shokooh, H.M. Knutson
openaire   +1 more source

High Temperature Ampacity Model for Overhead Conductors

IEEE Power Engineering Review, 2002
A computer-based ampacity model that can predict the temperature of overhead conductors for temperatures as high as 250/spl deg/C has been developed. The model is a revision of a program that has been reliably used for approximately 20 years to calculate the transient ampacity of a wide variety of conductor designs. The accuracy of the program has been
S.L. Chen, W.Z. Black, H.W. Loard
openaire   +1 more source

Ampacities of power cables wound on reels

IEEE Transactions on Power Delivery, 1994
This paper presents a mathematical model that is capable of calculating the ampacity of a wide variety of power cable designs consisting of an arbitrary number of layers on a cable reel. The model considers round cables with copper conductors. The validity and accuracy of the ampacity model were verified by comparing the predicted temperature ...
W.Z. Black, G.W. Woodruff, P.G. Kovalchik, F.T. Duda   +3 more
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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 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 ...
openaire   +1 more source