Results 101 to 110 of about 5,287 (159)

Coordination of Insulation

Transactions of the American Institute of Electrical Engineers, 1933
The general scheme of coordination is discussed. Average circuit insulation used in 1930 is shown. The relation that switching surges and arcing ground overvoltages bear on coordination is discussed giving the number and magnitude of such waves found in service.
V. M. Montsinger, W. L. Lloyd, J. E. Clem   +2 more
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Insulation coordination of distribution transformers

Electrical Engineering, 1932
In this study of insulation coordination of distribution transformers, the operating conditions are reviewed and the requirements of transformers to be operated without protection are outlined. Test results on transformers designed to meet these requirements are given, showing that by the use of shields for the high-voltage windings and thyrite ...
E. D. Treanor, W. H. Cooney
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Insulation Coordination for Gas Insulated Substations

IEEE Transactions on Power Apparatus and Systems, 1973
This paper presents the development of BIL (Basic Lightning Impulse Insulation Level) ratings for SF6 gas insulated substations from 72.5 kV to 765 kV. The unique properties of the gas insulated substation are analyzed and insulation coordination design techniques are utilized to determine BIL ratings for the substation equipment, other than the ...
Helfried Anderl, Charles Wagner, Thomas Dodds   +2 more
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Coordination of line and transformer insulation

Electrical Engineering, 1932
The coordination of transformer insulation with line insulation recently has been discussed widely, and sentiment has changed gradually in favor of the use of an air-gap for purposes of coordination as against the practise of reducing the line insulation near the substation.
V. M. Montsinger, W. M. Dann
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Coordination of insulation as a design problem

Journal of the A.I.E.E., 1930
The factors having influence on insulation design of transmission line and station are briefly reviewed, and it is pointed out that the progress of the art does not yet allow of close design of the insulation structure for insulation strength. The prominent part played by the lightning arrester is stressed, and the fact that it has a marked effect on ...
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HBSE and insulation coordination

2015 IEEE Symposium on Product Compliance Engineering (ISPCE), 2015
Transient overvoltages are normal. Insulation must withstand not only the functional voltage, but also the transient overvoltages. A scheme called “insulation coordination” has been instituted by the International Electrical Commission to promulgate and standardize on coordinating the transient overvoltage suppression with insulation electric strength.
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Factors influencing the insulation coordination of transformers

Electrical Engineering, 1933
IN THE early days of the electrical industry, surges were relatively mysterious as to their origin, magnitude, and behavior. The ordinary factory tests now required by the A.I.E.E. rules were the reflection of experience and judgment rather than the analysis which has been made possible in the last few years.
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Lightning Insulation Coordination for a ??600-kV DC Gas Insulated Cable

IEEE Power Engineering Review, 1982
To determine the required BIL of a +600 kV dc gas-insulated cable, a probabilistic insulation coordination study was performed. An equation was developed to determine the maximum voltage on the cable as a function of directly connected highly nonlinear surge protective devices (MO).
A. Hileman, R. Flugum, T. Garrity
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765-kV Station Insulation Coordination

IEEE Transactions on Power Apparatus and Systems / Technical Operations Committee, 1969
Specially designed arresters are used in the American Electric Power 765-kV station insulation coordination as a first line of defense against overvoltage. The arresters have the ability to withstand sustained and dynamic overvoltages in excess of their rating. They also have the ability to discharge repetitively.
James D M Phelps
exaly   +2 more sources

Insulation Coordination for 38 kV Circuit Breakers

IEEE Power Engineering Review, 1985
Based on a review of the impulse insulation requirements for 38 kV circuit breakers and the impact of insulation coordination using modern arresters, a change is suggested in the way the impulse requirements are stated for the circuit breaker. The facets of circuit breaker design which may be affected are indicated. Specifically it is suggested that in
R. Few, John Harder
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