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class="inpage_right"> <div id="m4sedaowg009" class="mbx2"><a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 2019-05-14</div> <div id="m4sedaowg009" class="inpage_content"> <div id="m4sedaowg009" class="nr_main_box"> <h1 class="inside_rnewtil">絕緣油在電氣強(qiáng)度試驗(yàn)中,其火花放電電壓值的變化情況的種類及原因</h1> <div id="m4sedaowg009" class="inside_rnewtime">點(diǎn)擊次數(shù)：1052 更新更新時(shí)間：2019-05-14</div> <div id="m4sedaowg009" class="inside_rnewcon"><p style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">絕緣油在電氣強(qiáng)度試驗(yàn)中,每杯試樣試驗(yàn)6次,取其平均值,即為該試樣的電氣強(qiáng)度或</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">介電強(qiáng)度</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">試驗(yàn)中,其火花放電電壓的變化有四種情況:</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">(1)次火花放電電壓特別低。次試驗(yàn)可能因向油杯中注油樣時(shí)或注油前油杯電極表</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">面不潔帶進(jìn)了一些外界因素的影響,使得次的數(shù)值偏低。這時(shí)可取2~6次的平均值</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">(2)6次火花放電電壓數(shù)值逐漸升高。一般在未凈化處理或處理不夠*而吸有潮氣的</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">油樣品中出現(xiàn),這是因?yàn)橛捅换鸹ǚ烹姾笥推烦睗癯潭鹊玫礁纳扑?/p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">(3)6次火花放電電壓數(shù)值逐漸降低。一般出現(xiàn)在試驗(yàn)較純凈的油中,因?yàn)樯傻挠坞x</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">帶電粒子、氣泡和碳屑量相繼增加,損壞了油的絕緣性能。另外,還有的自動(dòng)油試驗(yàn)器在連</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 宋體, 黑體, sans-serif; vertical-align: baseline; box-sizing: border-box; text-align: justify;">續(xù)試驗(yàn)6次中不攪拌,電極間的碳粒逐漸增加,導(dǎo)致火花放電電壓逐漸降低</p><p style="margin: 18px 0px 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: 23px; font-family: Tahoma, "Microsoft YaHei", Arial, 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