[原创]UL阻燃标准介绍...

 
<p style="TEXT-ALIGN: center; LINE-HEIGHT: 150%" class="MsoNormal" align="center"><b style="mso-bidi-font-weight: normal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #222222; FONT-SIZE: 12pt; mso-no-proof: yes" lang="EN-US">UL</span></b><b style="mso-bidi-font-weight: normal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #222222; FONT-SIZE: 12pt; mso-no-proof: yes">阻燃标准介绍<span lang="EN-US"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></span></b></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes" lang="EN-US">UL</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">列明的任何电缆经过测试验证若符合某种防火等级，可在电缆印上<span lang="EN-US">UL</span>识别字、防火等级和批准编号。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes">◎</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">增压级<span lang="EN-US">-CMP</span>级（送风燃烧测试<span lang="EN-US">/</span>斯泰钠风道实验<span lang="EN-US">Plenum Flame Test/Steiner TunnelTest</span>）<span lang="EN-US"><br/></span>这是<span lang="EN-US"> UL</span>防火标准中要求最高的电缆（<span lang="EN-US">Plenum Cable</span>），适用安全标准为<span lang="EN-US">UL910</span>，实验规定在装置的水平风道上敷设多条试样，用<span lang="EN-US">87.9KW</span>煤气本生灯（<span lang="EN-US">300</span>，<span lang="EN-US">000BTU/Hr</span>）燃烧<span lang="EN-US">20</span>分钟。合格标准为火焰不可延伸到距煤气本生灯火焰前端<span lang="EN-US">5</span>英尺以外。光密度的峰值最大为<span lang="EN-US">0.5</span>，平均密度值最大为<span lang="EN-US">0.15</span>。 这种<span lang="EN-US">CMP</span>电缆通常安装在通风管道或空气处理设备使用的空气回流增压系统中，被加拿大和美国所认可采用。符合<span lang="EN-US">UL910</span>标准的<span lang="EN-US">FEP/PLENUM</span>材料，阻燃性能要比符合<span lang="EN-US">IEC60332-1</span>及<span lang="EN-US">IEC60332-3</span>标准的低烟无卤材料的阻燃性能好，燃烧起来烟的浓度低。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes">◎</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes"> 干线级<span lang="EN-US">-CMR</span>级（直立燃烧测试<span lang="EN-US">Riser Flame Test</span>）<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">这是<span lang="EN-US"> UL</span>标准中商用级电缆（<span lang="EN-US">Riser Cable</span>）<span lang="EN-US">,</span>适用安全标准为<span lang="EN-US">UL1666</span>。实验规定在模拟直立轴上敷设多条试样，用规定的<span lang="EN-US">154.5KW</span>煤气本生灯（<span lang="EN-US">527</span>，<span lang="EN-US">500BTU/Hr</span>）<span lang="EN-US">30</span>分钟。合格标准为火焰不可蔓延到<span lang="EN-US">12</span>英尺高的房间的上部。干线级电缆没有烟雾浓度规范，一般用于楼层垂直和水平布线使用。 <span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes">◎</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes"> 商用级<span lang="EN-US">-CM</span>级（垂直燃烧测试<span lang="EN-US">Vertial Tray Flame Test</span>）<span lang="EN-US"><br/></span>这是<span lang="EN-US">UL</span>标准中商用级电缆（<span lang="EN-US">General Purpose Cable</span>），适用安全标准为<span lang="EN-US">UL1581</span>。实验规定在垂直<span lang="EN-US">8</span>英尺高的支架上敷设多条试样，用规定的<span lang="EN-US">20KW</span>带状喷灯燃烧（<span lang="EN-US">70</span>，<span lang="EN-US">000BTU/Hr</span>）<span lang="EN-US">20</span>分钟。合格标准为火焰不可蔓延到电缆的上端并自行熄灭。<span lang="EN-US">UL1581</span>和<span lang="EN-US">IEC60332-3C</span>类似，只是敷设电缆根数不同。商用级电缆没有烟雾浓度规范，一般仅应用于同一楼层的水平走线，不应用于楼层的垂直布线上。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes" lang="EN-US"><o:p>&nbsp;</o:p></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes">◎</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes"> 通用级<span lang="EN-US">-CMG</span>级（垂直燃烧测试<span lang="EN-US">Vertial Tray Flame Test</span>）<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">这是<span lang="EN-US">UL</span>标准中通用级电缆（<span lang="EN-US">General Purpose Cable</span>），适用安全标准为<span lang="EN-US">UL1581</span>。商用级和通用级的测试条件类似，同为加拿大和美国认可使用。通用级电缆没有烟雾浓度规范，一般仅应用于同一楼层的水平走线，不应用于楼层的垂直布线上。<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-bidi-font-family: 宋体; mso-no-proof: yes">◎</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">家居级<span lang="EN-US">- CMX</span>级（垂直燃烧测试<span lang="EN-US">Vertial Wire Flame Test</span>）<span lang="EN-US"><o:p></o:p></span></span></p>
<p style="LINE-HEIGHT: 150%" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; COLOR: #444444; FONT-SIZE: 12pt; mso-no-proof: yes">这是<span lang="EN-US">UL</span>标准中家居级电缆（<span lang="EN-US">Restricted Cable</span>），适用安全标准为<span lang="EN-US">UL1581</span>，<span lang="EN-US">VW-1</span>。实验规定试样保持垂直，用试验用的喷灯燃烧（<span lang="EN-US">30</span>，<span lang="EN-US">000 TU/Hr</span>）<span lang="EN-US">15</span>秒钟，然后停止<span lang="EN-US">15</span>秒钟，反复<span lang="EN-US">5</span>次。合格标准为余火焰不可超过<span lang="EN-US">60</span>秒钟，试样不可烧损<span lang="EN-US">25%</span>以上，垫在底部的外科用棉不可被落下物引燃。<span lang="EN-US">UL1581-VW-1</span>和<span lang="EN-US">IEC60332-1</span>类似，只是燃烧的时间不同。这种等级也没有烟雾或毒性规范，仅用于敷设单条电缆的家庭或小型办公室系统中。这类电缆不应成捆敷设使用，必须套管。烟密度、卤素含量和毒性等级。</span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></p>

[此贴子已经被作者于2012/12/10 21:40:25编辑过]