YB3 Series Explosion-proof Induction Motors
Features
Exd-symbol Exd I Mb, ExdⅡAT4 Gb, ExdⅡBT4 Gb
Category I: surface highest temperature no higher than 150℃ (when coal dust may cover the motor surface), no higher than 450℃ (when coal dust will not cover the surface or some protection work has been done to prevent the coal dust accumulation)
Category Ⅱ: surface highest temperature no higher than T1(450℃), T2(300℃), T3(200℃), T4(150℃); Terminal box with three or six terminals for rubber jacket cable (plastic cable) and steel cable.
Ambient temperature:－15℃~35℃ in coal mine and －15℃~40℃ in plant.
High efficiency IE2
Rating voltage: 380V,660V,380/660V 50Hz (for Exd-symbol Exd I and frame size 80-355)
660V/1140V 50Hz (for Exd-symbol Exd I and frame size 112-355)
380V, 660V, 380/660V 50Hz & 400V, 415V, 440V, 460V, 480V, 690V 60Hz (for Exd-symbol ExdⅡ)
Application
Ideal for the coal mine where methane and coal dust may be present (Exd I) and dangerous explosion areas（Ex dⅡAT4、dⅡBT4）in the plant with the class ⅡA ⅡB and temperature T1-T4 flammable gas.
Performance Data
Common frame size corresponding to the power:
Remark: For the other special rated powers, please contact with us.
