2015JB/T 7565.4-2015 Specification of flameproof three-phase asynchronous motor.Part 4: YB3 series flameproof (Ex d II C T1~T4) three-phase asynchronous motor (frame size 63 to 355)
2004JB/T 7565.4-2004 Specification of flameproof three phases asynchronous motor Part 4: Series YB2 flameproof (Exd Ⅱ CT1~T4) three phases asynchronous motor (Frame size 63 to 355)
1991JB/T 5338-1991 Technical conditions of YB series flameproof (dII CT4) three-phase asynchronous motor (frame size 80~315)
JB/T 5338-1991 Technical conditions of YB series flameproof (dII CT4) three-phase asynchronous motor (frame size 80~315) was changed to JB/T 7565.4-2004 Specification of flameproof three phases asynchronous motor Part 4: Series YB2 flameproof (Exd Ⅱ CT1~T4) three phases asynchronous motor (Frame size 63 to 355).