Insulation characteristics of CO2 gas for nonstandard lightning impulse oscillations: Evaluation method of nonstandard lightning impulse waveform for CO2 gas insulation

2008 ◽  
Vol 163 (3) ◽  
pp. 1-9
Author(s):  
Shuhei Kaneko ◽  
Tetsuhiko Yokoi ◽  
Shigemitsu Okabe
Keyword(s):  
Evaluation Method ◽  
Co2 Gas ◽  
Lightning Impulse ◽  
Gas Insulation

scholarly journals Evaluation Method of Non-standard Lightning Impulse Waveform for Oil-filled Transformer

2003 ◽  
Vol 123 (12) ◽  
pp. 1580-1586 ◽  
Author(s):  
Shigemitsu Okabe ◽  
Sadayuki Yuasa
Keyword(s):  
Evaluation Method ◽  
Lightning Impulse

scholarly journals Pressurized CF3I-CO2 Gas Mixture under Lightning Impulse and its Solid By-Products

2017 ◽  
Vol 7 (6) ◽  
pp. 3088 ◽  
Author(s):  
M. S. Kamarudin ◽  
A. Haddad ◽  
B. C. Kok ◽  
N. A. M. Jamail
Keyword(s):  
High Voltage ◽  
Laboratory Tests ◽  
Gas Mixtures ◽  
Gas Pressure ◽  
Gas Mixture ◽  
Electrode Gap ◽  
Co2 Gas ◽  
Lightning Impulse ◽  
Edx Analyses ◽  
By Products

<span>This paper describes tests results on the CF<sub>3</sub>I-CO<sub>2</sub> gas mixtures as an alternative for SF<sub>6</sub> gas as to be used as insulating medium in high voltage applications. Pressurized CF<sub>3</sub>I-CO<sub>2</sub> gas mixtures are subject under standard lightning impulse voltages at both positive and negative polarities</span><span>. Under rod-plane configuration, the electrode gap length and gas pressure are varied accordingly. Upon completion of the laboratory tests, SEM and EDX analyses are carried out to assess the solid by-products. It was found that higher gas mixtures provide better insulation strength. In terms of weight, 50% of the solid by-product is found to be iodine.</span>

Sign in / Sign up

Export Citation Format

Share Document