Differential Current Transducer for Localization Type A Metro Vehicle
YANG Li-xin 1，JIANG Xiao-dong 2，LjAN Qi-xing 2
1. The Third Railway Survey and Design Institute Group Corporation，Shanghai 200063，China; 2. Ningbo CSR Times Transducer Technique Co. ,Ltd, Ningbo，Zhejiang 315021,China
Abstract：Research purposes: By researching and developing differential current transducer used for leakage detecting, to adapt the ground protection of traction inverter in localization type A metro vehicle.
Research methods: This paper analyzes differential current transducer function and circuit principle used in high- voltage board circuit of localization type A metro vehicle, then introduces its outline structure and material features and performance.
Research results: By application of differential current transducer in the field test for Guangzhou Metro Line 1，this paper proves the differential current transducer with reliable and stable working performance.
Research conclusions: By making Geld test of magnetic modulation type differential current transducer in Guangzhou Metro Line 1，which proves whose leakage current test accuracy can reach shove t 10%，with high immunity to external interference. Compared with other type current transducer, magnetic modulation type with remarkable advantage, can adapt to the requirement of traction inverter in localization type A metro vehicle,
杨立新,蒋晓东,连奇幸. 国产化A型地铁车辆的差动电流传感器[J]. 铁道工程学报, 2007, 24(10): 89-92.
YANG Li-xin,JIANG Xiao-dong,LjAN Qi-xing. Differential Current Transducer for Localization Type A Metro Vehicle. 铁道工程学报, 2007, 24(10): 89-92.
2007, Vol. 24 
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