信息技术设备的电磁兼容性标准.htm

该资料时关于EMC的相关问题

  <td width="24%" valign=top style='width:24.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>射频连续波传导<span lang=EN-US><o:p></o:p></span></p>
  </td>
  <td width="76%" valign=top style='width:76.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p><span lang=EN-US>0.15~80MHz 3V（r.m.s,未调制）80%AM(1KHz)<o:p></o:p></span></p>
  </td>
 </tr>
 <tr>
  <td width="24%" valign=top style='width:24.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>电压暂降<span lang=EN-US><o:p></o:p></span></p>
  </td>
  <td width="76%" valign=top style='width:76.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>＞<span lang=EN-US>95%减小 0.5周期 30%减小 25周期<o:p></o:p></span></p>
  </td>
 </tr>
 <tr>
  <td width="24%" valign=top style='width:24.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>电压短时中断<span lang=EN-US><o:p></o:p></span></p>
  </td>
  <td width="76%" valign=top style='width:76.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>＞<span lang=EN-US>95%减小 250周期<o:p></o:p></span></p>
  </td>
 </tr>
 <tr>
  <td width="24%" valign=top style='width:24.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>浪涌（冲击）<span lang=EN-US><o:p></o:p></span></p>
  </td>
  <td width="76%" valign=top style='width:76.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p><span lang=EN-US>1.2/50(8/20) μs 1KV(峰值)，线 线2KV(峰值)，线 地<o:p></o:p></span></p>
  </td>
 </tr>
 <tr>
  <td width="24%" valign=top style='width:24.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p>电快速瞬变脉冲<span lang=EN-US><o:p></o:p></span></p>
  </td>
  <td width="76%" valign=top style='width:76.0%;padding:1.5pt 1.5pt 1.5pt 1.5pt'>
  <p><span lang=EN-US>1.0KV 5/50ns 5KHz(重复频率)<o:p></o:p></span></p>
  </td>
 </tr>
</table>

</div>

<p><strong><span lang=EN-US>3.测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.1电源端子传导骚扰测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.1.1测量设备</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p>　　进行电源端子传导发射测量需要<span lang=EN-US>3种设备：<o:p></o:p></span></p>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l32 level1 lfo23;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>骚扰测量设备：用来定量计量骚扰强度的设备，可以是</span><span lang=EN-US
     style='font-size:15.0pt'>EMI</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>测量接收机，也可以是频谱分析仪，频率范围要覆盖</span><span lang=EN-US
     style='font-size:15.0pt'>150KHz~30MHz</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>，具有峰值、准峰值和平均值检波功能，满足</span><span lang=EN-US
     style='font-size:15.0pt'>GB/T6113.1</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>规定的要求。</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l12 level1 lfo24;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>线路阻抗稳定网络（</span><span lang=EN-US style='font-size:15.0pt'>LISN</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>）：由于电源端子传导发射的强度与电网的阻抗有关，因此为了使测量具有唯一性，必须在特定的阻抗条件下测量，</span><span
     lang=EN-US style='font-size:15.0pt'>LISN</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>就提供了这样一个环境，</span><span lang=EN-US style='font-size:
     15.0pt'>GB9254</span><span style='font-size:15.0pt;font-family:宋体;
     mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>标准中使用的</span><span
     lang=EN-US style='font-size:15.0pt'>LISN</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>为</span><span lang=EN-US style='font-size:15.0pt'>50</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>Ω</span><span lang=EN-US
     style='font-size:15.0pt'>/50</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>μ</span><span lang=EN-US style='font-size:15.0pt'>H</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>，要满足</span><span lang=EN-US
     style='font-size:15.0pt'>GB/T6113.1</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>第</span><span lang=EN-US style='font-size:15.0pt'>8</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>章规定的要求。</span><span
     style='font-size:15.0pt'> <span lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l18 level1 lfo25;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>接地平板：受试设备要放置在接地金属板上进行试验，该金属板比被测设备边框大</span><span
     lang=EN-US style='font-size:15.0pt'>0.5</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>米，最小尺寸为</span><span lang=EN-US style='font-size:15.0pt'>2m</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>×</span><span lang=EN-US
     style='font-size:15.0pt'>2m; <o:p></o:p></span></li>
</ul>

<p><strong><span lang=EN-US>3.1.2测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p>　　电源端子传导骚扰测量主要测量被测设备沿着电源线向电网发射的骚扰电压，做这项试验时要注意的是：调整受试设备工作状态，找出最大骚扰所对应的工作状态为试验结果。<span
lang=EN-US><o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.2电信端口共模骚扰测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.2.1测量设备</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p>　　进行电源端子传导发射测量需要<span lang=EN-US>4种设备：<o:p></o:p></span></p>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l6 level1 lfo26;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>骚扰测量设备：用来定量计量骚扰强度的设备，同电源端口传导发射测量的要求相同。</span><span
     style='font-size:15.0pt'> <span lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l7 level1 lfo27;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>阻抗网络：共模终端阻抗为</span><span lang=EN-US style='font-size:
     15.0pt'>150Ω±20Ω</span><span style='font-size:15.0pt;font-family:宋体;
     mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，相角</span><span
     lang=EN-US style='font-size:15.0pt'>0°±20°</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>；隔离度在</span><span lang=EN-US style='font-size:15.0pt'>150KHz
     1.5MHz</span><span style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:
     "Times New Roman";mso-hansi-font-family:"Times New Roman"'>为</span><span
     lang=EN-US style='font-size:15.0pt'>35 55dB</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>，随频率线性上升，在</span><span lang=EN-US style='font-size:
     15.0pt'>15 30MHz</span><span style='font-size:15.0pt;font-family:宋体;
     mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>时大于</span><span
     lang=EN-US style='font-size:15.0pt'>55dB</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>；纵向转换损耗对</span><span lang=EN-US style='font-size:15.0pt'>3</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>类电缆</span><span lang=EN-US
     style='font-size:15.0pt'>150KHz 1.5MHz</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>为</span><span lang=EN-US style='font-size:15.0pt'>80
     55dB±3dB</span><span style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:
     "Times New Roman";mso-hansi-font-family:"Times New Roman"'>，</span><span
     lang=EN-US style='font-size:15.0pt'>1.5 30MHz</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>时大于</span><span lang=EN-US
     style='font-size:15.0pt'>50 25dB±3dB</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>，并随频率线性下降；</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l29 level1 lfo28;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>容性电压探头：阻抗</span><span style='font-size:15.0pt'> </span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>＞</span><span lang=EN-US
     style='font-size:15.0pt'> 1MΩ</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>，并联电容</span><span style='font-size:15.0pt'> </span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>＜</span><span lang=EN-US
     style='font-size:15.0pt'> 5pF</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>；</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l16 level1 lfo29;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>电流探头：插入阻抗≤</span><span lang=EN-US style='font-size:
     15.0pt'>1Ω</span><span style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:
     "Times New Roman";mso-hansi-font-family:"Times New Roman"'>；</span><span
     style='font-size:15.0pt'> <span lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l14 level1 lfo30;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>接地平板比被测设备边框大</span><span lang=EN-US style='font-size:
     15.0pt'>0.5m</span><span style='font-size:15.0pt;font-family:宋体;
     mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，最小尺寸为</span><span
     lang=EN-US style='font-size:15.0pt'>2m×2m</span><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>。</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<p><strong><span lang=EN-US>3.2.1测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p style='margin-left:36.0pt'>电信端口配置为两组以上平衡对线或非屏蔽电缆时，采用电压法和电流法；<span
lang=EN-US><o:p></o:p></span></p>

<p style='margin-left:36.0pt'>电信端口配置为平衡电缆或同轴（屏蔽）电缆时，采用电流法。<span lang=EN-US><o:p></o:p></span></p>

<p style='margin-left:36.0pt'>详见<span lang=EN-US>GB9254附录C。<o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.3辐射骚扰测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p><strong><span lang=EN-US>3.3.1测量设备与场地</span></strong><span lang=EN-US><o:p></o:p></span></p>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l28 level1 lfo31;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>椭圆形开阔场或半电波暗室，水平和垂直场地衰减测量值与理想场地的理论值之差不得大于±</span><span
     lang=EN-US style='font-size:15.0pt'>4dB</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>；</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l0 level1 lfo32;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>测量接收机：</span><span lang=EN-US style='font-size:15.0pt'>30
     1000MHz</span><span style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:
     "Times New Roman";mso-hansi-font-family:"Times New Roman"'>，满足</span><span
     lang=EN-US style='font-size:15.0pt'>GB/T6113.1</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>；</span><span style='font-size:
     15.0pt'> <span lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l15 level1 lfo33;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>天线：对数偶极子天线或双锥天线，满足</span><span lang=EN-US
     style='font-size:15.0pt'>GB/T6113.1</span><span style='font-size:15.0pt;
     font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>；</span><span style='font-size:15.0pt'> <span
     lang=EN-US><o:p></o:p></span></span></li>
</ul>

<ul type=disc>
 <li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
     mso-list:l21 level1 lfo34;tab-stops:list 36.0pt'><span style='font-size:
     15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
     "Times New Roman"'>接地平板：符合</span><span lang=EN-US style='font-size:15.0pt'>GB/T6113.1</span><span
     style='font-size:15.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
     mso-hansi-font-family:"Times New Roman"'>；</span><span style='font-size:
     15.0pt'> <span lang=EN-US><o:p></o:p></span></span></li>
</ul>

<p><strong><span lang=EN-US>3.3.2测量方法</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p>　　将天线取水平极化方向并置于某一适当高度，转台置于某一适当角度，在<span lang=EN-US>30 1000MHz范围内用峰值检波进行初测；<o:p></o:p></span></p>

<p>在<span lang=EN-US>0° 360°之间旋转转台，在初测时骚扰较大的频率点上，寻找被测设备最大骚扰电平（准峰值）