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Influence of High Temperature Water on Performance of Composite Insulation Cross-arm
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Rui KE1, 2, 3, Changlin HE1, 2, Duan MEI1, 2, 3, Xiaodong ZHU1, 2, Xiong WU1, 2, 3, Fan SHEN1, 2, 3, Feng WU1, 2
Insulating Materials | 2021, 54(10) : 100 - 104
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Insulating Materials | 2021, 54(10): 100-104
• Test and Analysis •
Influence of High Temperature Water on Performance of Composite Insulation Cross-arm
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Rui KE1, 2, 3, Changlin HE1, 2, Duan MEI1, 2, 3, Xiaodong ZHU1, 2, Xiong WU1, 2, 3, Fan SHEN1, 2, 3, Feng WU1, 2
Affiliations
  • 1NARI Group Corporation, Nanjing 211106, China
  • 2Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China
  • 3Hubei Key Laboratory of Power Grid Lightning Risk Prevention, Wuhan 430074, China
Published: 2021-10-20 doi: 10.16790/j.cnki.1009-9239.im.2021.10.016
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In order to guide the application of composite insulation cross-arm in distribution networks, we carried out 42 h boiling (0.1%NaCl) tests on the sealed and unsealed composite insulation cross-arm according to the requirements of standard GB/T 20142—2006, and studied the influence of high temperature water environment on the performance of the insulation cross-arms treated by the two methods. The water absorption, specified bending load, tensile strength, bending strength, dry power frequency voltage, dry lightning impulse voltage, and breakdown strength of the insulation cross-arms were tested before and after boiling. Meanwhile, the microscopic morphology of the fracture was analyzed by SEM. The result shows that under high temperature water environment, the performance of the sealed cross-arm is better than that of the unsealed one. The specified bending load of all the samples is above 6.5 kN, the lightning impulse withstand voltage is greater than 350 kV, and the tensile and bending strengths is greater than 680 MPa and 1 000 MPa, respectively. The samples show good mechanical and electrical properties.

composite insulation cross-arm  /  boiling  /  mechanical properties  /  electrical properties  /  SEM
Rui KE, Changlin HE, Duan MEI, Xiaodong ZHU, Xiong WU, Fan SHEN, Feng WU. Influence of High Temperature Water on Performance of Composite Insulation Cross-arm[J]. Insulating Materials, 2021 , 54 (10) : 100 -104 . DOI: 10.16790/j.cnki.1009-9239.im.2021.10.016
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.10.016
  • Receive Date：2021-01-22
  • Online Date：2026-03-23
  • Published：2021-10-20
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History
  • Received：2021-01-22
  • Revised：2021-03-11
Affiliations
    1NARI Group Corporation, Nanjing 211106, China
    2Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China
    3Hubei Key Laboratory of Power Grid Lightning Risk Prevention, Wuhan 430074, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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