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Effect of humid environment on insulating performance of traction motor stator winding
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Guanfang LIU1, 2, Xiaoqiang ZHANG1, 2, Jiexin FAN1, 2, Xiaomei PEI1
Insulating Materials | 2023, 56(11) : 53 - 56
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Insulating Materials | 2023, 56(11): 53-56
• Insulation Technology •
Effect of humid environment on insulating performance of traction motor stator winding
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Guanfang LIU1, 2, Xiaoqiang ZHANG1, 2, Jiexin FAN1, 2, Xiaomei PEI1
Affiliations
  • 1CRRC YongJi Electric Co., Ltd., Yongji 044502, China
  • 2Shanxi Key Laboratory of Traction Motor for Rail Transit, Yongji 044502, China
Published: 2023-11-20 doi: 10.16790/j.cnki.1009-9239.im.2023.11.009
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In order to study the influence of humid environment on the insulating performance of traction motor stator, we took the newly manufactured and overhauled stator winding of traction motor with silicone insulation system as the research object. The damp heat tests were carried out on the stator winding and its end, the insulating performance of the insulation system before and after moisture absorption were tested, and the main ways of moisture penetration into the insulation system were analyzed. The results show that the insulation resistance of the stator winding insulation system decreases after the damp heat test. The weakest part in the wet environment is the connection welding part of the end winding insulation, which is the main way of moisture to penetrate into the insulation system. Once this moisture channel is formed, it is easy to dry, but in the humid environment, the moisture will enter the channel and cause the insulation resistance decrease. After long term operation, the insulation performance of stator winding will decrease due to humidity.

motor  /  insulation system  /  humid environment  /  insulation resistance
Guanfang LIU, Xiaoqiang ZHANG, Jiexin FAN, Xiaomei PEI. Effect of humid environment on insulating performance of traction motor stator winding[J]. Insulating Materials, 2023 , 56 (11) : 53 -56 . DOI: 10.16790/j.cnki.1009-9239.im.2023.11.009
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Year 2023 volume 56 Issue 11
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.11.009
  • Receive Date：2022-11-19
  • Online Date：2025-11-24
  • Published：2023-11-20
Article Data
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History
  • Received：2022-11-19
  • Revised：2023-01-20
Affiliations
    1CRRC YongJi Electric Co., Ltd., Yongji 044502, China
    2Shanxi Key Laboratory of Traction Motor for Rail Transit, Yongji 044502, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.11.009
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表12种不同金属材料的力学参数
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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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