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ISSN 1000-7229
CN 11-2583/TM
ELECTRIC POWER CONSTRUCTION ›› 2012, Vol. 33 ›› Issue (6): 84-88.
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Abstract: Jinping-Sunan ±800 kV UHV DC line uses hydraulic splicing fitting and strain clamp, and the grip strength of fitting should be more than 95 % RTS. Because 900 mm2 large cross-sections ACSR was 4-layer aluminum stranded structure, especially the aluminum/steel ratio of JL/G3A-900/40 conductor was larger, this paper mainly studied the influence factors of fitting on the grip strength of large cross-section conductor. The result shows that there is a wire strength loss caused by crimping, which is the main influence factor, as well as aluminum /steel ratio.
Key words: 900 mm2 large cross-section conductor, crimping retention rate, wire strength, aluminum/steel ratio
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https://www.cepc.com.cn/EN/Y2012/V33/I6/84