In production operations, sometimes encounteredThree-phase asynchronous motorA burning-out accident occurs; So how do we determine if the motor is burned out? followMori machineXiaobian together by "look, smell, ask, cut" to judge whether the motor is burned out:
Look: We judge whether the motor is burned out direct method, seeThree-phase asynchronous motorWhether the oil seal of the front bearing end cover is black; In general, because the bearing is broken, the intense friction will make the bearing oil seal temperature rise too high and turn black; When the bearing falls apart, it causes the sweep to short-circuit the coil and trip.
Smell:Three-phase asynchronous motorOverload or sweeping will cause the coil to burn, so we will smell the burnt odor after the coil burns when we open the junction box.
Q: Whether the mechanical equipment is overloaded or whether the transmission parts need to be updated, these can be directly asked whether the motor is the user; The parts of the motor have their service life, too old and not updated will cause the motor overload and cause the motor to overheat leading to burnout.
Cut: It is easy to judge the motor burn out, and the difficult thing is to find out the cause of the motor burn out, so as to troubleshoot the fault, otherwise replace the new oneThree-phase asynchronous motorIt's still gonna burn out, so cut is the key.
The reasons for motor burnout are summarized as follows: lack of phase operation, motor overload, bearing disassembly, coil aging, etc
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