< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">B&nbs;型剩余电流断路器测试仪概述： < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">B型剩余电流断路器测试仪（以下简称测试仪）是为剩余电流断路器的性能测试而研制，它是检测B型剩余电流断路器脱扣电流和分断时间的关键仪器。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪的功能能够满足GB16916.1-2003、GB16917.1-2003和GB22974-2008标准对剩余电流断路器的测试要求。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪适用于电子式和电磁式的剩余电流断路器。
1P+N、2P、、+N、4P的断路器均能测试，输出大剩余电流为2A。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">测试仪的功能操作采用触摸屏，断路器动作后，脱扣电流和分断时间均能保持，便于读数和记录。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">系统显示和操作采用流行的工业级触摸屏，操作简单； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">辅助电源要求：三相四线输入380V，大于2A < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">接地方式：可靠接地 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">2.2仪器输出电流范围和精度 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;&nbs;测试仪输出的电流值为真有效值，测试不确定度小于1%； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;1）变频模式交流剩余电流范围：0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（2）50Hz交流剩余电流范围：0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（3）脉动直流剩余电流 < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为0°的脉动直流剩余电流，电流的范围为0~800mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为90°的直流剩余电流，电流的范围为0~400mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">选项角为135°的直流剩余电流，电流的范围为0~200mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（4）平滑直流剩余电流，剩余电流的范围为0~2A； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">（5）叠加平滑直流的范围为5~100mA； < ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;（6）时间测试：在0~1000ms范围内，漏电测试仪测量的分断时间相对于计量值的偏差在±2ms。
< ,="" tahoma,="" arial,="" 宋体,="" sans-serif;="" font-style:="" normal;="" font-variant-ligatures:="" font-variant-cas:="" font-weight:="" 400;="" letter-sacing:="" orhans:="" 2;="" text-align:="" left;="" text-indent:="" 0x;="" text-transform:="" none;="" white-sace:="" widows:="" word-sacing:="" -webkit-text-stroke-width:="" text-decoration-style:="" initial;="" text-decoration-color:="" initial;"="" data-x-flag="12_6" style="margin-to: 0x; margin-bottom: 0x; adding: 0x; outline: 0x; color: rgb(51, 51, 51); font-size: 14x; white-sace: normal; background-color: rgb(255, 255, 255); osition: relative; line-height: 2em; font-family: "Microsoft YaHei"; clear: both;">&nbs;
在使用数字示波器测量波形参数的时候，我们经常会遇到“光标测量”与“自动测量”结果不一致的情况，到底该哪一个比较准确？本文将为大家解开这个困扰。示波器发展到现阶段，已经不仅仅是在调试中观察波形，更重要的是能很好的测量一些参数帮助大家优化设计方案。
示波器的测量方法大致有三种：刻度测量；光标测量；自动测量。
刻度测量就是根据波形所占格数进行估测，估测的准确度当然是比较低的，只适合做定性分析。
不同于使用已知的带电电压源，利用PRV24检验测试仪时，无需穿戴个人防护用品(PPE)。
与在可能存在危险的电气环境下用高能量源来检验测试仪器相比，使用PRV24降低了和电弧的风险，因为PRV24提供符合安全标准要求的小电流受控电压。
口袋大小的PRV24可输出24V交流和直流稳态电压，用于测试高阻抗和低阻抗万用表、电流钳表和双极测试仪，无需使用多个检验工具和已知的高能量电压源来检验测试仪器。
两种额定电流的解释1.HeatingCurrent功率电感在DC-DC电路中，电流经过时，会消耗一定的功率（铜耗Coerloss+磁耗Coreloss），消耗功率会导致电感的温度上升，电感一般工作温度有一定范围，比如WE的电感允许的oeratingtemerature:-40°C-+125°C，ambienttemerature:-40°C-+85°C。
为了电感可以在一定的温度范围内正常工作，电感厂商会给出一个"基于电感温度上升的额定电流"即HeatingCurrent，这个参数的限定值是根据电流在电感上的热效应定义的，在大部分公司的电感的手册里，以Idc（直流电流）来表示这个电流。