防爆風機-防爆電機等級分別為BT4

   CT4防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機是對(dui)防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機防(fang)(fang)護類型等(deng)級的一個稱呼(hu)，防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機型號(hao)一般是指YBX3防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機、YBK2防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機、TYBPE防(fang)(fang)爆(bao)(bao)(bao)永磁同步電(dian)(dian)(dian)機等(deng)類似的型號(hao)。那(nei)么我們常說(shuo)的CT4防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機和BT4防(fang)(fang)爆(bao)(bao)(bao)電(dian)(dian)(dian)機有什(shen)么區別(bie)呢？接下來就為大(da)家(jia)講解(jie)：

   CT4防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)的(de)(de)(de)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)等級(ji)(ji)是ExdIICT4，使用(yong)(yong)(yong)場所一般用(yong)(yong)(yong)于工廠(chang)，溫(wen)度可(ke)以在135℃左右的(de)(de)(de)高(gao)溫(wen)中運行，屬于耐高(gao)溫(wen)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)、注(zhu):CT4防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)的(de)(de)(de)C就是廠(chang)用(yong)(yong)(yong)的(de)(de)(de)意(yi)思，T4就是防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)可(ke)以承受高(gao)溫(wen)的(de)(de)(de)溫(wen)度組(zu)別(bie)，下面我們會有講解(jie)。BT4防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)的(de)(de)(de)防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)等級(ji)(ji)為ExdIIBT4，防(fang)(fang)(fang)(fang)護等級(ji)(ji)低(di)于CT4防(fang)(fang)(fang)(fang)爆(bao)(bao)(bao)(bao)電(dian)機(ji)，所以使用(yong)(yong)(yong)ⅡC可(ke)適(shi)用(yong)(yong)(yong)于ⅡA、ⅡB的(de)(de)(de)使用(yong)(yong)(yong)條(tiao)件(jian)。

    防(fang)(fang)(fang)爆電(dian)機(ji)(ji)(ji)可(ke)以分為(wei)(wei)I類(lei)(lei)和II類(lei)(lei)兩(liang)種(zhong)類(lei)(lei)型，I類(lei)(lei)適用(yong)于煤礦井下(xia)運(yun)作電(dian)機(ji)(ji)(ji)設(she)備的，II類(lei)(lei)是用(yong)于工廠防(fang)(fang)(fang)爆電(dian)機(ji)(ji)(ji)設(she)備，I類(lei)(lei)防(fang)(fang)(fang)爆電(dian)氣(qi)設(she)備是專門使用(yong)在煤礦井下(xia)作業，而煤礦井下(xia)的氣(qi)體(ti)甲烷，所以I類(lei)(lei)電(dian)氣(qi)設(she)備不再分級(ji)。II類(lei)(lei)防(fang)(fang)(fang)爆電(dian)機(ji)(ji)(ji)設(she)備，按其適用(yong)于氣(qi)體(ti)混合物(wu)大(da)安全間隙或小點燃電(dian)流比分為(wei)(wei)A、B、C三級(ji)（即IIA、IIB、IIC）。

    CT4防爆電機和BT4防爆電機表面溫度等級從低到高的順序是：T1（450℃）、T2（300℃）、T3（200℃）、T4（135℃）、T5（100℃）、T6（85℃） 
由此可以看出，CT4防爆電機的等級比BT4的等級高，CT可用的范圍是廣的，CT是乙炔、氫氣級別的防爆等級，若環境里有乙炔、氫氣這些氣體，要用CT級別的防爆電機。而BT不能用于乙炔氣體的運作場所，只是中等級別的防爆定義。