Search Results - "KAWAMURA, TATSUO"

Development of Reference Shunt for Short-Time Alternating High Current Tests and Study of Measuring System by KIDA, JUNZO, NAKAJIMA, MASATOSHI, GODA, YUTAKA, KIKUCHI, KUNIO, KUDO, KIETSU, ISHII, HIROMI, MATSUI, YOSHIHIKO, MATSUMURA, TOSHIRO, KAWAMURA, TATSUO

“…SUMMARY Short‐circuit tests for power circuit breakers and others require alternative short‐time current measurement, from a few kA to over several tens kA…”
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Observation and Analysis of Incident Surge Voltage Waveforms in Substations by Winter Lightning by Hori, M., Mitani, M., Sakurano, H., Motoyama, H., Kawamura, T.

“…This paper presents the observation results of surge waveforms in substations and the frequency components of such waveforms. In the Higashikanazu 77 kV power…”
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High-voltage testing on UHV equipment: Overshoot and base curve for oscillating lightning impulse by Matsumoto, Satoshi, Kawamura, Tatsuo

“…As the higher impulse testing voltage, residual inductance of the test circuit or the stray capacitance of the test object increases with size. This means that…”
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Recent developments on high current measurement using current shunt by Kawamura, Tatsuo, Haginomori, Eiichi, Goda, Yutaka, Nakamoto, Tetsuya

“…The Short‐circuit Testing Liaison (STL) is the organization that consists of high power testing laboratories of the world. Member laboratories perform…”
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Characteristics of the Radiation Field Waveforms Produced by Lightning Return Strokes by Lee, Bok-Hee, Eom, Ju-Hong, Kang, Sung-Man, Paek, Seung-Kwon, Kawamura, Tatsuo

“…Some features of the radiation field waveforms produced by cloud-to-ground lightning return strokes were investigated. A transient analyzer was used together…”
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A Monitoring Device of Leakage Currents Flowing through ZnO Surge Arresters by Lee, Bok-Hee, Kang, Sung-Man, Eom, Ju-Hong, Kawamura, Tatsuo

“…Authors developed a device for monitoring resistive leakage current and a technique for the diagnosis of the deterioration of ZnO surge arresters. The…”
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Physical Properties of Radiation Fields Produced by Multiple In-cloud Lightning Discharges by Lee, Bok-Hee, Lee, Seung-Chil, Ahn, Chang-Hwan, Kawamura, Tatsuo

“…This paper describes some physical properties and statistical analyses of radiation fields associated with multiple in-cloud lightning discharges. A wide-band…”
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High-voltage Testing on UHV Equipment : Overshoot and Base Curve for Oscillating Lightning Impulse : IEC standardization on UHV techologies developed in Japan by MATSUMOTO, Satoshi, KAWAMURA, Tatsuo

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Internal winding failure due to resonance overvoltage in distribution transformer caused by winter lightning by Hori, M., Nishioka, M., Ikeda, Y., Noguchi, K., Kajimura, K., Motoyama, H., Kawamura, T.

“…In this paper, we describe the internal winding failures of the no. 3 distribution transformer at Katayamazu substation caused by winter lightning. Almost the…”
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Transient Impulse Breakdowns of SF 6 Gas in Inhomogeneous Electric Fields by Kawamura, Tatsuo, Lee, Bok-Hee

“…In this paper, we describe the dielectrics and predischarge developments of gaseous SF 6 stressed by nonoscillating and oscillating impulse voltages in…”
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Multistory transmission tower model for lightning surge analysis by Ishii, M., Kawamura, T., Kouno, T., Ohsaki, E., Shiokawa, K., Murotani, K., Higuchi, T.

“…A multistory transmission tower model to be used in multiconductor analysis by EMTP (Electromagnetic Transients Program) is proposed. The circuit parameters of…”
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Characteristics of the Lightning Stepped-Leader Electromagnetic Pulses by Lee, Bok-Hee, Jeong, Dong-Cheol, Lee, Dong-Moon, Kawamura, Tatsuo

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Observation and Analysis of Incident Surge Voltage Waveforms in Substations by Winter Lightning by Hori, M., Mitani, M., Sakurano, H., Motoyama, H., Kawamura, T.

“…Summary form only given. This paper presents the observation results of surge waveforms in substations and the frequency components of such waveforms. In the…”
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Internal winding failure due to resonance overvoltage in distribution transformer caused by winter lightning by Hori, M., Nishioka, M., Ikeda, Y., Noguchi, K., Kajimura, K., Motoyama, H., Kawamura, T.

“…Summary form only given. In this paper, we describe the internal winding failures of the No. 3 distribution transformer at Katayamazu substation caused by…”
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CLINICAL AND EXPERIMENTAL STUDIES ON THE COMBINED ANTIBIOTIC THERAPY by HASEGAWA, MITSUTO, ASANO, YOSHIO, HOSHINO, HIROSHI, SAITO, KENJI, KAWAMURA, TATSUO, KAITO, YUTAKA

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Lightning Surge Analysis in a Multi-Conductor System for Substation Insulation Design by Ozawa, Jun, Ohsaki, Eiichi, Ishii, Masaru, Kojima, Soji, Ishihara, Hiroshi, Kouno, Teruya, Kawamura, Tatsuo

“…Analysis of back flashover lightning surges coming into a substation is important to understanding of substation insulation co-ordination. These surges are…”
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Japanese Method of Artificial Pollution Tests on Insulators by Fujitaka, Shuhei, Kawamura, Tatsuo, Tsurumi, Sakuro, Kondo, Hiroshi, Seta, Taisuke, Yamamoto, Mitsuyoshi

“…Salt pollution on outdoor insulators has been a serious problem in Japan, and steady efforts have been made to prevent flashover faults on polluted insulators…”
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Breakdown Characteristics of SF 6 Gap Disturbed by a Metallic Protrusion under Oscillating Transient Overvoltages by Kawamura, Tatsuo, Lee, Bok-Hee, Nishimura, Takahiko, Ishii, Masaru

“…This paper deals with the experimental investigations of particle-initiated breakdown of SF 6 gas stressed by the oscillating transient overvoltage and…”
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Development of suspension-type arresters for transmission lines by Yamada, T., Sawada, J., Zaima, E., Irie, T., Ohashi, T., Yoshida, S., Kawamura, T.

“…A suspension-type surge arrester has been developed by incorporating ZnO elements into the shed of a conventional suspension insulator. This arrester is…”
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Breakdown characteristics of SF6 gap disturbed by a metallic protrusion under oscillating transient overvoltages by KAWAMURA, T, BOK-HEE LEE, NISHIMURA, T, ISHII, M

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