Results 251 to 260 of about 421,331 (286)

The impulse characteristics of porcelain insulators

Journal of the Institution of Electrical Engineers - Part I: General, 1941
This report deals with the flashover voltage of insulators and gaps subjected to impulse voltages of different wave-shapes, with the relation between crest voltage and time to flashover at voltages above the minimum required for flashover, with breakdown while the voltage is rising rapidly, with the simultaneous application of impulse and alternating ...
G.W. Bowdler, W.G. Standring
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Characteristics of Impulsive Suicide Attempts and Attempters

Suicide and Life-Threatening Behavior, 2002
Suicide attempts often are impulsive, yet little is known about the characteristics of impulsive suicide. We examined impulsive suicide attempts within a population‐based, case‐control study of nearly lethal suicide attempts among people 13–34 years of age.
O R, Simon, A C, Swann, K E, Powell, L B, Potter, M J, Kresnow, P W, O'Carroll   +5 more
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Complex Impulses and Their Shear Characteristics

Cybernetics and Systems Analysis, 2016
The authors introduce the concepts of complex impulse, shear measure of intersection of two impulses, comb impulse, and chaotic impulse. The upper and lower estimates of the probability of at least one intersection are given, and the theorem about the upper estimates in intersection of comb impulses is formulated and proved.
O. V. Koba, O. M. Kucheryava
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Impulse transient characteristic of grounding grids

2002 3rd International Symposium on Electromagnetic Compatibility, 2003
The lightning transient characteristics of a substation grounding grid are analyzed in detail, especially considering the dynamic and nonlinear effects of soil ionization around grounding conductors and the inductance between grounding conductors. The analysis results are calculated by a loss transmission-line model with distributed time-variable ...
null Gao Yanqing, null He Jinliang, null Zeng Rong, null Liang Xidong   +3 more
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Impulse Characteristics in Rapid Movement

Journal of Motor Behavior, 1986
Three untested assumptions of the impulse-variability model were examined in two experiments utilizing rapid, uni-planar limb movements. Experiment 1 varied movement distance (A) and movement time (MT) in a rapid-timing paradigm where the subject moved a lever through a certain distance in a certain time.
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Impulse Characteristics of Aerial Spacer Cable

IEEE Transactions on Power Apparatus and Systems, 1967
Although the overall performance record of aerial spacer cable on the Public Service Electric and Gas Company system has been excellent, the number of failures caused by lightning appears to be disproportionately high. To determine the optimum design criteria of this type of distribution system, a program of laboratory impulse tests was established ...
J. Gill, R. Stys, R. Seely
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Impulse voltage characteristics of circuit breakers

Electrical Engineering, 1954
Insulation co-ordination is a major consideration in the cost and design of a complete electric power system and of all individual pieces of apparatus. Basic impulse levels have been standardized so that apparatus and protective equipment can be co-ordinated. These levels are measured by withstands on specified test waves.
V. E. Phillips, R. H. Miller
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