YBDF系列电动机的防爆标志为ExdⅡBT4，适用于工厂Ⅱ类A级、B级电气设备，温度组分别为T1、T2、T3、T4组爆炸性气体混合物存在的环境。根据订货要求，也可为用户生产防爆标志为Exd的电动机.本系列电机功率范围：0.12-7.5 KW .YBDF-WF防爆阀门电机型号：YBDF-WF-122-4，YBDF-WF-211-4、YBDF-WF-212-4，YBDF-WF-221-4，YBDF-WF-222-4，YBDF-WF-223-4， YBDF-WF-231-4，YBDF-WF-232-4，YBDF-WF-311-4，YBDF-WF-312-4，YBDF-WF-312-4，YBDF-WF-322-4，YBDF-WF-411-4，YBDF-WF-412-4，YBDF-WF-421-4，YBDF-WF-422-4.YBDF2-WF防爆阀门电机型号：YBDF2-WF-122-4，YBDF2-WF-211-4，YBDF2-WF-212-4，YBDF2-WF-221-4，YBDF2-WF-222-4，YBDF2-WF-223-4，YBDF2-WF-231-4，YBDF2-WF-232-4，YBDF2-WF-311-4，YBDF2-WF-312-4，YBDF2-WF-321-4，YBDF2-WF-322-4，YBDF2-WF-411-4， YBDF2-WF-412-4， YBDF2-WF-421-4， YBDF2-WF-422-4。YBDF防爆阀门电机型号：YBDF-122-4，YBDF-211-4，YBDF-212-4，YBDF-221-4，YBDF-222-4，YBDF-231-4，YBDF-223-4，YBDF-232-4，YBDF-311-4，YBDF-312-4，YBDF-321-4，YBDF-322-4 ，YBDF-411-4，YBDF-412-4，YBDF-421-4，YBDF-422-4，YBDF-431-4。阀门三相异步电机，电动执行器电机，阀门电机。

阀门专用电机代号	防护要求	基座号	参考功率KW
YDF/YDF2/YBDF/YBDF2 （YDF和YDF2为普通型） （YBDF和YBDF2为隔爆型）	WF	111-4	0.06
	WF	112-4	0.09
	WF	121-4	0.12
	WF	211-4	0.18
	WF	212-4	0.25
	WF	221-4	0.37
	WF	222-4	0.55
	WF	223/231-4	0.75
	WF	232/311-4	1.1
	WF	312-4	1.5
	WF	321-4	2.2
	WF	322-4	3.0
	WF	411-4	4.0
	WF	412-4	5.5
	WF	421-4	7.5
	WF	422-4	11