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Study on Side High Resistance Layer of Carbon-ceramic Linear Resistor and Its Impulse Voltage Resistance
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Wei CHEN1, Xurui YAO1, Xia ZHAO2, Jiguang SONG3, Zhongxun XU3, Hangyin MAO4, Chenbo XU4
Insulating Materials | 2021, 54(12) : 48 - 51
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Insulating Materials | 2021, 54(12): 48-51
• Material Research •
Study on Side High Resistance Layer of Carbon-ceramic Linear Resistor and Its Impulse Voltage Resistance
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Wei CHEN1, Xurui YAO1, Xia ZHAO2, Jiguang SONG3, Zhongxun XU3, Hangyin MAO4, Chenbo XU4
Affiliations
  • 1Xi'an Jiaotong University, Xi'an 710049, China
  • 2China Electric Power Research Institute, Beijing 100192, China
  • 3Pinggao Group Co., Ltd., Pingdingshan 467001, China
  • 4State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310000, China
Published: 2021-12-20 doi: 10.16790/j.cnki.1009-9239.im.2021.12.008
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A high resistance insulating layer for edge protection of carbon-ceramic linear resistors was prepared using SiO2-Al2O3-B2O3 ternary glass as matrix and mullite as filler. The adaptability of expansion coefficient between high resistance insulating layer and resistance ceramic was studied, and the voltage shock resistance was tested using impulse voltage of 1.2/50 μs. The results show that the glass content affects the expansion coefficient, porosity, and electric strength of the high resistance insulating layer. When the glass content in the high resistance insulating layer is more than 80%, the electric strength of the resistance shows a significant downward trend. With the increase of the coating thickness of the high resistance insulating layer, the electric strength of the carbon-ceramic linear resistance increases obviously. When the thickness of the high resistance insulating layer is controlled at about 0.35 mm, the electric strength of the resistance reaches the maximum value. Using SF6 gas in place of air can increase the resistance significantly. In the SF gas environment of 0.2 MPa, under the protection of high resistance insulating layer, the withstand flashover voltage of the resistance reaches 22.5 kV, which is 80 % higher than that without protection.

carbon-ceramic linear resistance  /  high resistance layer  /  impulse voltage
Wei CHEN, Xurui YAO, Xia ZHAO, Jiguang SONG, Zhongxun XU, Hangyin MAO, Chenbo XU. Study on Side High Resistance Layer of Carbon-ceramic Linear Resistor and Its Impulse Voltage Resistance[J]. Insulating Materials, 2021 , 54 (12) : 48 -51 . DOI: 10.16790/j.cnki.1009-9239.im.2021.12.008
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doi: 10.16790/j.cnki.1009-9239.im.2021.12.008
  • Receive Date：2021-01-08
  • Online Date：2026-03-23
  • Published：2021-12-20
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History
  • Received：2021-01-08
  • Revised：2021-02-02
Funding
Affiliations
    1Xi'an Jiaotong University, Xi'an 710049, China
    2China Electric Power Research Institute, Beijing 100192, China
    3Pinggao Group Co., Ltd., Pingdingshan 467001, China
    4State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310000, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.12.008
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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
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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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