高压漏电起痕试验仪在电器产品受潮湿和杂质环境的影响下,不同极性带电部件之间或带电部件与接地金属之间可能会引起绝缘上的漏电,产生的电弧对电器造成击穿短路或由于放电使材料电蚀损,甚至起燃导致火灾。漏电起痕试验就是模拟上述情况对绝缘材料进行的一种破坏性试验,用以测量和评定在规定电压下,绝缘体在电场和含杂质水的作用时的相对耐漏电起痕性,适用于电工电子产品、家用电器的固体电器绝缘材料及其产品,如:继电器插座、转换开关盖、接触器等……。特点:试验仪由试验部分和控制部分组成采用一体化设计,方便现场安装和调试。试验箱外壳及结构件采用S304不锈钢或黄铜制造;电极头为不锈钢,耐高温耐腐蚀;滴液计数准确,控制系统稳定可靠。高电压起痕试验机(含高电压发生器)依据标准:GB/T6553-2003高电压电痕化指数试验仪适用于对电工电子产品、家用电器及其材料进行耐电痕化和蚀损的试验,模拟在工频(48Hz - 62Hz)下,用液体污染物和斜面试样,通过耐电痕化和蚀损的测量评定在严酷环境条件下使用的电气绝缘材料的耐电痕化和蚀损等级。本机是严格按照GB/T6553-2003?及 IEC60587-1984设计制造。 高压漏电起痕试验仪性能指标1、电极:厚0.5mm 材质:不锈钢;2、上下电极距离:50.0mm±0.1;3、试验电压:100V-6000V 无级可调;4、调压器:输出:0~250V可以调,容量5KVA;5、试验变压器:容量5KVA,输出电压AC6000V(或DC6000V可选);6、高精度稳压器:输出AC220V 功率6000W,精度±1%;7、回路电流为60mA时,切断电压输出;8、试验时间:6小时;9、滴液精度:0.2%;10、电压稳定度:±1%;11、起痕判断:依标准GB/T6553-2003/4.1.2规定,在试样上施加电压(2.5k V,3. 5k V和4.5k V),并以一定流速滴污染液,在60mA以下的电流持续6H不过流即为通过;12、滴液装置:采用雷弗精密蠕动泵,流量范围0.00185 ~20毫升/分钟,工作转速0.1~50转/分钟,流量精度误差:<0.2%; 13、输出电压:交流/直流(可切换)14、实验组数:五组15、控制装置:采用西门子PLC+台湾威纶触摸屏控制,控制精密,操作简单,设计完全人性化,试验结束自动生成报告,面板热敏打印机可以适时打印试验结果;15、工作室体积:900L*650W*950H(mm);容积为0.56m3。16、机箱:采用SUS304不锈钢(拉丝面);17、污液槽采用316不锈钢,加装密闭装置。18、仪器外形尺寸:1300L*700W*1800H(mm)19、重量:约200KG。 高压漏电起痕试验仪相关概念与定义1. 电痕:绝缘材料表面因局部裂变而产生的局部导电通道。2. 电痕化:固体绝缘材料表面因局部区域的放电导致持续劣化并形成导电或部分导电通道注:电痕化通常是由于表面污染产生的)3. 电蚀损:由于漏电或放电作用而使材料损耗4. 电痕时间:在规定的试验条件下,形成电痕所需要的时间。(以上定义来源GB6553-2014严酷环境条件下使用的电气绝缘材料评定耐电痕化和蚀损的试验方法) 高压漏电起痕试验仪试验前设备相关的准备5.1滴液管的安装每个试样组的滴液管为2根,一根一端位于试样上电极上方,另一端与水泵的出口连接;另一根一端与水泵入口连接,另一端置于盛污染液的容器内,该容器应为塑料或玻璃材质(忌金属材质容器)。 试验程序: (1)、试验的准备:除另有规定外,试验应在环境温度(23士2)℃下进行,每种材料试验五个试样。装试样时无光泽的试验面向下,使之与水平面成45°±2°角,如图2所示两电极之间相距(50士0.5) mm。5个试样可一起或独立进行试验(该设备为5个试样一起试验款设备)。注:每次试验都使用新滤纸衬垫(见图3)。首先将污染液注入滤纸衬垫中,以使滤纸充分湿润,调节污染液流速并按表1的规定校正流速。至少观察流动10min,确保污染液在两电极间的试样表面上稳定的留下。污染液应从上电极的轴孔处流出而从不从滤纸的旁边或顶部溢出。 序号名称单位数量1试样盒套52电极对53排烟管根14量杯个15塑料软管(滴液管)根10 Under the influence of humidity and impurity environment on electrical products, the high-voltage leakages test instrument may cause leakage of electricity on insulation between charged components of different polarities or between charged components and grounded metals, and the resulting arc causes a breakdown of electrical appliances. Short circuit or material electrical damage due to discharge, It even ignited and caused a fire. Leakage initiation test is a destructive test conducted on insulating materials to simulate the above conditions, and is used to measure and assess the relative resistance of insulators to leakage of electrical initiation at an electric field and impurity containing water at a specified voltage. For electrical and electronic products, electrical appliances and solid electrical insulation materials and their products, such as: relay sockets, switch covers, contactors, etc..Features:The test instrument is composed of the test part and the control part and is designed in an integrated way to facilitate on-site installation and commissioning. The case and structure of the test box are made of S304 stainless steel or brass The electrode head is stainless steel, resistant to high temperature and corrosion The drip count is accurate and the control system is stable and reliable.Gaodianya(including Gaodianya generator)According to standard: GB/T6553 -2003The high electric piezoelectric trace index tester is suitable for the testing of electrical and electronic products, household appliances and their materials, and simulates the use of liquid pollutants and oblique interview samples at the power frequency(48Hz-62Hz). The grade of electrical insulation used under severe environmental conditions is assessed by measuring the resistance to electric etching and corrosion. This machine is strictly designed and manufactured in accordance with GB/T6553 -2003 and IEC 60587-1984
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