• Journal of the Korean Society for Railway
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• v.20 no.3
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• pp.356-364
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• 2017

The process of inspecting electric railway vehicles is complicated and these vehicles accompany a risk of safety accidents. This developed system will be a great help in simplifying the shunting process and be very useful in terms of ensuring safety and providing user convenience. In this paper, the results of performance evaluation tests are studied on a movable catenary system for railway vehicles that secured mechanical durability, convenience, and operator safety by applying a specific rigid bar catenary of an existing mobile train line. We presented an analysis of the basic characteristics for site installation including sorting. In conclusion, this developed system was obtained in good results through durability test, durable mechanical load test and safety test in require specifications.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.32 no.4
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• pp.263-266
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• 2019

In the Airport Railroad, the Yeongjong Bridge has a length of 4,420 m and connects Yeongjong Island with the mainland of Incheon City. The bridge is a two-level structure, consisting of a six-lane road at the upper level and a combination of a road and railroad at the lower level. The environmental conditions for the electric railway come mainly from the salt injury area and a heavy industry zone, and the maintenance cycles are determined differently depending on these conditions. This study analyzed the deterioration characteristics of long rod insulators produced with a movable ceramic bracket and polymer materials in the Yeongjong Bridge section of the Airport Railway operating in the salt injury area according to the material characteristics. Comparison of the corona measurements when the insulators were cleaned at the same time showed that the polymer insulator had a higher insulation performance than the ceramic insulator.