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Transactions of the American Institute of Electrical Engineers, 1948
Although electromagnetic protective relays are adequate for present requirements, the ever-increasing demand for higher speeds and greater accuracy and dependability seems likely to exceed the capabilities of relays now available. However, the trend toward electronic control circuits in other branches of electrical engineering, coupled with the recent ...
R. H. Macpherson +2 more
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Although electromagnetic protective relays are adequate for present requirements, the ever-increasing demand for higher speeds and greater accuracy and dependability seems likely to exceed the capabilities of relays now available. However, the trend toward electronic control circuits in other branches of electrical engineering, coupled with the recent ...
R. H. Macpherson +2 more
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Electrical Engineering, 1935
Recent developments in relay protective schemes, using metallic pilot channels for isolating a transmission line during fault conditions, reduce conditions, considerably the magnitude of the currents which must be handled. Schemes recently developed have many other advantages over the older pilot wire schemes being more economical to install and ...
E. E. George, W. R. Brownlee
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Recent developments in relay protective schemes, using metallic pilot channels for isolating a transmission line during fault conditions, reduce conditions, considerably the magnitude of the currents which must be handled. Schemes recently developed have many other advantages over the older pilot wire schemes being more economical to install and ...
E. E. George, W. R. Brownlee
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Transmission Line Relay Protection
Transactions of the American Institute of Electrical Engineers, 1919This paper is divided into three parts, the first part consisting of a list of relay nomenclature according to function and application, the second part being a general discussion on relay protection with special reference to an investigation of the Protective Devices Committee to obtain information on transmission line protective scheme and the third ...
H. R. Woodrow +3 more
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Transactions of the American Institute of Electrical Engineers, 1912
Reviewing American practise in the use of relay protective devices for electrical generating, transmission and distributing systems, there appears to have been no material change in the construction or commercial application of this class of apparatus in a considerable period of years.
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Reviewing American practise in the use of relay protective devices for electrical generating, transmission and distributing systems, there appears to have been no material change in the construction or commercial application of this class of apparatus in a considerable period of years.
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Transactions of the American Institute of Electrical Engineers, 1949
This paper will describe the relay protection of the Shipshaw Number 2 Generating Station of the Aluminum Company of Canada, Limited, and will draw attention to particular points of interest in design considerations and will outline some operating results and experience.
J. T. Madill, F. H. Duffy
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This paper will describe the relay protection of the Shipshaw Number 2 Generating Station of the Aluminum Company of Canada, Limited, and will draw attention to particular points of interest in design considerations and will outline some operating results and experience.
J. T. Madill, F. H. Duffy
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Characteristics of protective relays
Proceedings of the American Institute of Electrical Engineers, 1912The object of this paper is to describe the general characteristics of protective relays necessary for the automatic and selective action of circuit breaking and switching devices connected to electrical distributing systems. It is not my purpose to discuss or advocate any specific type or make of relay, but rather to bring before you the necessary ...
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Simplicity in protective relaying
Electrical Engineering, 1946SIMPLICITY is of paramount importance when designing and laying out protective relay circuits. These circuits are called upon to operate so infrequently that they should be more reliable than the apparatus or lines they protect. Certain limiting conditions and requirements requested by circuit designers generally cause false tripping and make the ...
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2013 International Conference on Green Computing, Communication and Conservation of Energy (ICGCE), 2013
Growing concern over the ever-increasing energy needs prompted various research in energy conservation field. Many organizations have initiated programs to save energy technologies that would enable them to meet the demands of energy. A variety of devices and systems has been created to conserve energy.
Akash Saha, Ch. Krishnakantha
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Growing concern over the ever-increasing energy needs prompted various research in energy conservation field. Many organizations have initiated programs to save energy technologies that would enable them to meet the demands of energy. A variety of devices and systems has been created to conserve energy.
Akash Saha, Ch. Krishnakantha
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Protective Relays on Pa. Locomotives
Transactions of the American Institute of Electrical Engineers, 1934No current rupturing device is provided between pantograph and main transformer on electric locomotives recently placed in operation on the Pennsylvania Railroad; instead a ``pantograph relay'' is used which is connected so as to utilize the substation circuit breakers to open high voltage short circuits, grounds, or overloads ofi the locomotive.
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