防爆雙頭應急照明燈適用范圍:
1.適用于1區，2區危險場所。
2.適用于ⅡA、ⅡB、ⅡC類爆炸性氣體環境。
3. 可配裝白熾燈、汞燈。 
4.要求ⅡC類時請注明
防爆雙頭應急照明燈產品特點：
1. 外殼采用ZL102鋁合金壓鑄成型，表面高壓靜電噴塑。 
2. 應急燈中正常照明燈和應急照明燈各自獨立適合安裝條件許可的場所;
3.照明應急兩用燈正常照明和應急照明共用一個燈體光源獨立。
4.內裝免維護鎳鎘電池組，在正常供電下自動充電，事故斷電或停電時應急燈自動點亮
5.鋼管或電纜布線均可。
6. 可根據用戶要求設置試驗按鈕和指示燈具
7.符合GB3836-2000，IEC60079標準要求
8.鋼化玻璃燈罩，不銹鋼外露緊固件。
9.防護網罩采用鍍鋅后表面噴塑，雙重防腐。
10.A型燈：照明應急兩用式，正常照明光源為自鎮汞燈（Z）或白熾燈（B）；應急照明光源為鹵鎢燈。 11.B型燈：應急式，僅在應急時工作。 
12.C型燈：照明應急兩用燈，正常照明光源為高壓汞燈（G）,高壓鈉燈（N）,金鹵燈（L）等帶鎮流器的光源，應急光源為鹵鎢燈。 
13.D型燈：照明應急兩用燈，正常照明光源和應急光源全部均為70W金鹵燈。
防爆應急燈是由應急電池電源供電的，供主電斷電時可立即啟動應急照明用的防爆照明燈具，也可通過外接開關控制。一種是可作為正常工作照明燈，同時具有應急功能；另一種是單純作為應急照明燈，平常處于關閉狀態。兩種應急都是在主電斷電時可立即啟動應急照明,也可通過外接開關控制。
LED防爆應急燈的工作原理
應(ying)急照(zhao)明(ming)系統以自帶電(dian)(dian)(dian)源(yuan)(yuan)(yuan)獨(du)立(li)控(kong)制型為主，正(zheng)常(chang)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)接自普(pu)通(tong)照(zhao)明(ming)供(gong)電(dian)(dian)(dian)回路中(zhong)，平時(shi)(shi)對LED防爆(bao)應(ying)急燈(deng)(deng)蓄電(dian)(dian)(dian)池(chi)充電(dian)(dian)(dian)，當正(zheng)常(chang)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)切斷時(shi)(shi)，備(bei)用(yong)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)（蓄電(dian)(dian)(dian)池(chi)）自動供(gong)電(dian)(dian)(dian)。這(zhe)種(zhong)形式(shi)的LED防爆(bao)應(ying)急燈(deng)(deng)每(mei)個燈(deng)(deng)具(ju)內(nei)部都(dou)有變壓(ya)、穩壓(ya)、充電(dian)(dian)(dian)、逆變、蓄電(dian)(dian)(dian)池(chi)等大量的電(dian)(dian)(dian)子(zi)元(yuan)器件，LED防爆(bao)應(ying)急燈(deng)(deng)在(zai)使(shi)用(yong)、檢修(xiu)、故(gu)(gu)障(zhang)時(shi)(shi)電(dian)(dian)(dian)池(chi)均需充放電(dian)(dian)(dian)。 另(ling)一種(zhong)是集中(zhong)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)集中(zhong)控(kong)制型，LED防爆(bao)應(ying)急燈(deng)(deng)具(ju)內(nei)無獨(du)立(li)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)，正(zheng)常(chang)照(zhao)明(ming)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)故(gu)(gu)障(zhang)時(shi)(shi)，由集中(zhong)供(gong)電(dian)(dian)(dian)系統供(gong)電(dian)(dian)(dian)。在(zai)這(zhe)種(zhong)形式(shi)的應(ying)急照(zhao)明(ming)系統中(zhong)，所有燈(deng)(deng)具(ju)內(nei)部復雜(za)的電(dian)(dian)(dian)子(zi)電(dian)(dian)(dian)路被省掉(diao)了，應(ying)急照(zhao)明(ming)燈(deng)(deng)具(ju)與普(pu)通(tong)的燈(deng)(deng)具(ju)無異，集中(zhong)供(gong)電(dian)(dian)(dian)系統設置在(zai)的房間內(nei)。