The Journal of the Institute of Electrical Engineers of Japan
Online ISSN : 2187-6797
Print ISSN : 0020-2878
ISSN-L : 0020-2878
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Volume 42, Issue 407
Displaying 1-6 of 6 articles from this issue
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  • Ccmbined Tπ Type Artificial Electric Lines
    H. NUKIYAMA, Y. SHOJI
    1922 Volume 42 Issue 407 Pages 413-436
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.413
    JOURNAL FREE ACCESS
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    As an artificial electric lines T line nad π line are in common use. They can be designed to represent exactly the voltage and current of conjugate uniform line at their junctions at a single frequency, When the frequency changes, the character of such an artificial line, will deviate from that of a uniform line, If the artificial line is to be used in a definite range of frequency this error can be mode sufficiently small by making the section of the artificial line small. When the length of each section is given, the error due to the change of frequency may be made small by suitable circuit arrangement of the artificial line, It is proposed to combine T sections and π sections for this purpose and utilize opposite frequency character of them to neutralize the frequency error. Such an artificial line is here called combined Tπ type artifical electric line. Theory of one kined of such combined Tπ type line is give (see fig. 9, )Calculations and experiments of the actual 4-section T type, π type and combined Tπ type is reported. The result is, from a definite combined point of view, in favour of the combined Tπ type.
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  • On Mechanical Characteristics of Aluminum-Steel Conductor
    M. SUZUKI
    1922 Volume 42 Issue 407 Pages 437-451
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.437
    JOURNAL FREE ACCESS
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    The present rapid increase in capacity and distance of transmission line made the use of Aluminum-Steel cable as superior to copper conductor owing chiefly to its mechanical strength. The aluminum-steel conductor is not simple in its mechanical character but reveals many interesting relatirons, as this cable is composed of two different materials. The following is the topics of this paper:-
    1. Distribution of tensile load between two metal components in aluminum-steel cable.
    2. Stress-strain diagram of aluminum-steel cable.
    3. Effect of temperature upon mechanical stress in aluminum-steel cable.
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  • Economical Transmission Line Construction
    ERNEST V. PANNELL
    1922 Volume 42 Issue 407 Pages 452-469
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.452
    JOURNAL FREE ACCESS
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    The paper is designed to show the influence of different types of conductor material on the lay-out of a 130 KV transmission line carrying 60, 000 KW over a distance of 150 miles. Copper, Aluminium and Aluminium-steel conductors are compared each being strung on the most appropriate span length and the estimated construction cost is tabulated in each case. Different types of construction for mountain and valley sections are briefly considered. The general con-clusion is in favour of the use of aluminium-steel cables for economic and operating reasons.
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  • The Behaviour of Aluminium Cell Arrester under Radio Frequency E. M. F.
    H. YAGI, J. OKOCHI
    1922 Volume 42 Issue 407 Pages 470-476
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.470
    JOURNAL FREE ACCESS
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    It has previously been pointed out that Al-cell arrester reveals some remarkable behaviours under the E. M. F. at audio frequencies. Its behaviour under radio frequency E. M. F, is now studied by mean of the Braun tube oscillograpb.
    The dynamic characteristics and the cyclic current diagrams have been obtained for frequencies varying between 100, 000 and 200, 000 cycles per sec., from which the wave shape of the current and the potential against time are deduced.
    The superior quality of the Al-cell arrester is that the static capacity of the film is considerably large and that the discharge characteristic is non-disruptive. These superiorities may not be superseded by any other type of arrester, even very probably by the oxide film arrester.
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  • "Elliptic Loeus Method" to determine the "Regulation" of a Salient Pole Synchronous Generator
    KUMEO BABA
    1922 Volume 42 Issue 407 Pages 477-483
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.477
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  • Principle of Continuity of Vector Power in an Alternating Electromagnetic Current Field
    HEIICHI NUKIYAMA
    1922 Volume 42 Issue 407 Pages 484-486
    Published: 1922
    Released on J-STAGE: November 20, 2008
    DOIhttps://doi.org/10.11526/ieejjournal1888.42.484
    JOURNAL FREE ACCESS
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