铁(tie)道棒形瓷绝缘(yuan)(yuan)(yuan)(yuan)子(zi)用(yong)于标称电(dian)(dian)压25kV、工频单相交流电(dian)(dian)气化(hua)铁(tie)道接触网(wang)(wang)，用(yong)作(zuo)接触网(wang)(wang)的对地(di)绝缘(yuan)(yuan)(yuan)(yuan)及导线支(zhi)撑。执行铁(tie)道部准TB/T3199.1-2008《电(dian)(dian)气化(hua)铁(tie)路接触网(wang)(wang)用(yong)绝缘(yuan)(yuan)(yuan)(yuan)子(zi)第1部分：棒形瓷绝缘(yuan)(yuan)(yuan)(yuan)子(zi)》进行图(tu)样设(she)计(ji)和产品试验。Q12S-290/1400及Q12D-290/1400铁(tie)道棒形瓷绝缘(yuan)(yuan)(yuan)(yuan)子(zi)于2009年5月(yue)26日被评为“重(zhong)庆市重(zhong)点新产品”。并成(cheng)功(gong)在云南、新疆等地(di)铁(tie)路系统(tong)投入使用(yong)，得到用(yong)户一致好评。