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Development of a High Strength Conductor for Long Span (장경간용 고강도 가공송전선 개발)

  • Kim, Byung-Geol;Kim, Shang-Shu
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.06a
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    • pp.521-522
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    • 2007

  • A new high strength conductor was designed for long span transmission line with a high nitrogen steel having high tensile strength and non-magnetic properties and high strength AI alloy. The tensile strength of conductor is very important to reduce the sag. The height of electric tower depend on the sag also. More than 36% less of sag was achieved by using ACHR(Aluminum conductor stranded high-nitrogen steel reinforced) instead of conventional ACSR.

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Steam Pressure Effects on the Oxidation of Low-Sn Zircaloy-4 at High Temperatures (고압 수증기에 따른 Low-Sn Zircaloy-4의 고온 산화 거동)

  • Yang, Sung-Woo;Park, Kwang-Heon
    • Journal of the Korean institute of surface engineering
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    • v.40 no.4
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    • pp.180-184
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    • 2007

  • A new zirconium alloy, low-Sn Zircaloy-4 was investigated to see the effects of high pressure steam on the oxidation at high temperatures. High pressure steam turned out to enhance the oxidation at high temperatures below $1000^{\circ}C$. The oxide layer groved to deviate from the uniform layer under high steam pressures, and usually cracks were found at the thicker parts in the oxide layer. High pressure steam seems to destabilize the tetragonal oxides near the metal layer, and the monoclinic oxides transformed from the destabilized tetragonal oxides are structurally not sound, resulting in enhanced oxidation under high pressure steam.

  • https://doi.org/10.5695/JKISE.2007.40.4.180 인용 PDF KSCI

High Power Inverter for LCD Backlight Driving

  • Hur, Jeong-Wook;Kim, Tae-Jo;Lim, Sung-Kyoo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.91-92
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    • 2000

  • A high power inverter with 300:1 dimming capability for high luminance, one cell, Osram Planon type, plasma light source for LCD Backlight was designed and tested. It was possible to achieve 300:1 dimming control

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