珠江低烟无卤(lu)电缆 WDZ-YJY
YJY电缆图
手(shou)册往往只提供了YJV电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)和(he)BV电(dian)(dian)(dian)(dian)(dian)(dian)线的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)，YJY电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)和(he)BYJ电(dian)(dian)(dian)(dian)(dian)(dian)线的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)是(shi)(shi)多少，怎(zen)样查(cha)？ 我说，YJY电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)和(he)BYJ的(de)绝(jue)缘(yuan)层(ceng)与YJV是(shi)(shi)相同的(de)，其(qi)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)差不多，比VV电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)、BV导(dao)(dao)线的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)高(gao)。 这是(shi)(shi)为什么呢？影(ying)响电(dian)(dian)(dian)(dian)(dian)(dian)线、电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)的(de)外在要素(su)(su)许(xu)多，如敷(fu)设(she)方(fang)法(fa)、敷(fu)设(she)方(fang)位、环境稳(wen)度(du)(du)等等。影(ying)响电(dian)(dian)(dian)(dian)(dian)(dian)线、电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)的(de)内(nei)涵(han)要素(su)(su)是(shi)(shi)其(qi)原料(liao)。 内(nei)涵(han)要素(su)(su)中，当电(dian)(dian)(dian)(dian)(dian)(dian)线、电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)芯线都(dou)是(shi)(shi)铜导(dao)(dao)体时(shi)，绝(jue)缘(yuan)资料(liao)的(de)答应长(zhang)(zhang)时(shi)间(jian)工作温(wen)度(du)(du)是(shi)(shi)影(ying)响其(qi)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)的(de)要害。 YJY电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)和(he)BYJ电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)的(de)绝(jue)缘(yuan)层(ceng)与YJV电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)的(de)绝(jue)缘(yuan)层(ceng)是(shi)(shi)同一种资料(liao)，都(dou)是(shi)(shi)YJ(交(jiao)(jiao)联(lian)聚(ju)(ju)乙烯)，其(qi)绝(jue)缘(yuan)最高(gao)运(yun)转温(wen)度(du)(du)为90℃，所(suo)以(yi)其(qi)长(zhang)(zhang)时(shi)间(jian)运(yun)转载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)是(shi)(shi)根本相同的(de)。 而VV电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)、BV导(dao)(dao)线的(de)绝(jue)缘(yuan)层(ceng)都(dou)是(shi)(shi)V(聚(ju)(ju)氯乙烯)，其(qi)长(zhang)(zhang)时(shi)间(jian)运(yun)转载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)是(shi)(shi)根本相同，其(qi)绝(jue)缘(yuan)最高(gao)运(yun)转温(wen)度(du)(du)为70℃，比YJ(交(jiao)(jiao)联(lian)聚(ju)(ju)乙烯)最高(gao)运(yun)转温(wen)度(du)(du)低20℃，所(suo)以(yi)其(qi)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)相应地会小。 下面列新图集(ji)19DX101-1《修(xiu)建(jian)电(dian)(dian)(dian)(dian)(dian)(dian)气常用数据(ju)》为例，在敷(fu)设(she)方(fang)法(fa)（敷(fu)设(she)在明(ming)敷(fu)导(dao)(dao)管内(nei)）、环境温(wen)度(du)(du)下（30℃）均相同的(de)条件(jian)下，铜芯YJV电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)、GYJSYJ电(dian)(dian)(dian)(dian)(dian)(dian)缆(lan)(lan)(lan)(lan)、GYJS电(dian)(dian)(dian)(dian)(dian)(dian)线的(de)载(zai)流(liu)(liu)(liu)(liu)(liu)量(liang)
可见，YJV电(dian)缆(lan)与(yu)(yu)GYJSYJ电(dian)缆(lan)的(de)(de)绝缘层相(xiang)同(tong)都是YJ（交联聚乙烯），仅仅外(wai)护套不相(xiang)同(tong)，所以其载流(liu)(liu)量(liang)根本共同(tong)，GYJS电(dian)线的(de)(de)绝缘层也(ye)(ye)是YJ（交联聚乙烯），电(dian)线比电(dian)缆(lan)少了一层外(wai)护套，平等条件(jian)下，载流(liu)(liu)量(liang)稍微有些进步。相(xiang)同(tong)的(de)(de)，VV电(dian)缆(lan)与(yu)(yu)BV电(dian)线也(ye)(ye)相(xiang)同(tong)遵照该(gai)规则，这儿不再赘述。
别的，关于载流(liu)量(liang)的查询(xun)，主张直接参看电线(xian)GB/T 16895.6-2014《低压电气设(she)备第(di)5-52部(bu)分：电气设(she)备的挑选和(he)装置布(bu)线(xian)体系》，按XLPE(交联(lian)聚(ju)乙(yi)烯(xi))、EPR（乙(yi)丙(bing)橡胶）、PVC（聚(ju)氯(lv)乙(yi)烯(xi)）来查询(xun)相应电缆、电线(xian)的载流(liu)量(liang)。
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