Results 121 to 130 of about 114,124 (166)

Overhead Electrolysis and Porcelain Strain Insulators

Transactions of the American Institute of Electrical Engineers, 1915
There is a slight leakage of current from trolley wires to earth through insulated supports on all electrical overhead construction, which if not checked permits a flow of current which gives rise to electrical separation of water into oxygen and hydrogen.
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Porcelain for High Voltage Insulators

Transactions of the American Institute of Electrical Engineers, 1936
In this paper the mechanical failure of porcelain is discussed with special reference to 3 seldom recognized characteristics: the effect of the porcelain surface on the strength, the apparent anomalous distribution of individual mechanical test values, and the effect of time on mechanical strength.
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The testing of porcelain insulators

Journal of the Institution of Electrical Engineers, 1929
The paper discusses the technique of porcelain insulator testing. The ground covered includes the usual electrical and mechanical tests called for in the various national specifications, and also special tests of more recent origin.
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Development of the Porcelain Insulator

Transactions of the American Institute of Electrical Engineers, 1931
Porcelain insulators have been manufactured and used for the transmission of high-tension electric power for forty years. The first designs were of the single-piece and multipart cemented pin type. Necessity for higher safety factors against flash-over and increase in operating voltages demanded a rapid increase in the size of the insulators.
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Switching-Surge Insulation Level of Porcelain Insulator Strings

IEEE Transactions on Power Apparatus and Systems, 1964
A quantitative research report is made here, based on tests of EHV (extra-high-voltage) insulator strings. Impulse, switching-surge, and a-c tests on vertical, horizontal, and 45-degree V-strings were carried out, using both positive and negative unidirectional impulses and 250- to 3,250-?sec (microsecond) switching surges.
D. E. Alexander, E. W. Boehne
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Machine molding of porcelain pin insulators

Glass and Ceramics, 1999
A new method for molding porcelain pin insulators used as insulation for cables of low-voltage power lines is suggested. A machine for molding TF-20 inslators is described. A set of technological equipment for mini-production units of low and medium capacity is presented. The technical parameters of the set of machinery are given.
V. A. Aleko, M. V. Popov
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Dielectric behaviour of polluted porcelain insulators

IEE Proceedings - Generation, Transmission and Distribution, 2001
The dielectric behaviour of polluted porcelain insulators is investigated by means of experimental tests and simulation methods. The elaboration of the experimental results, using well known mathematical models of polluted insulators, leads to the identification of the arc constants.
F.V. Topalis, I.F. Gonos, I.A. Stathopulos   +2 more
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The mechanism of the contamination of porcelain insulators

Journal of the Institution of Electrical Engineers - Part II: Power Engineering, 1944
An analysis of the nature of the air-borne particles which constitute the main source of contamination on outdoor porcelain insulators, and of the forces acting upon them in the electrostatic field around an insulator, suggests that these forces are inadequate to account completely for the observed distribution and the quantity of the deposits on ...
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Flashover Performance of Composite and Porcelain Insulators

2019 International Conference on High Voltage Engineering and Technology (ICHVET), 2019
Insulators are required in a power system network to provide isolation for line conductors from ground and give necessary mechanical support. Different types of insulators are being used for transmission lines and in substations. Ceramic insulators, porcelain and glass insulators are in use for very long time.
K. A. Aravind, P. Rajamani, B. Krishna, K. Sandhya, Pradeep M. Nirgude   +4 more
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Ceramics in Relation to the Durability of Porcelain Suspension Insulators

Transactions of the American Institute of Electrical Engineers, 1916
The fundamental requirements in satisfactory high-voltage line insulators are summarized and particular emphasis is placed upon the need for coordinated study of service durability. The effect of porosity upon durability is explained in detail and an appeal made for the establishment of a practical porosity elimination test.
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