Our factory’s motors burn out all the time; it’s really amazing
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In our factory, motors burn down frequently; it’s really amazing. Such incidents usually stem from poor management and should be subject to evaluation. Yet in our factory, it’s common for motors to burn down – we just send them outside for repair, and if they burn down again, we send them out for repair once more
It is still necessary to carefully analyze the reasons and be prepared for potential problems. What if both units burn down? That would lead to a complete shutdown of the facility, which would be a serious issue as well as dangerous.
The management department should analyze the reasons—mechanical and electrical aspects—and implement corresponding measures. Grassroots implementation in the workshop.
The problem isn’t scary； The scary thing is that the cause of the problem wasn’t identified, nor were any preventive measures put in place to prevent its recurrence. Motors are prone to burning out; apart from management-related factors, this is closely related to the quality of the motor batch, the stability of the electrical supply, and the level of load
I did the same thing when I was working in a state-owned enterprise; in the large chemical industries, there is usually one unit in use and one as a backup, and the units often get damaged and then sent out for repair. The cause of the burns is generally prolonged overload operation due to faulty processing practices; once the thermal relay trips, it is reset casually without investigating the underlying reason. Later, I worked in a private enterprise with an intermittent production mode; the motors rarely burned out, but the fans and reciprocating pumps often overloaded and caused the thermal cutouts, all due to issues with belt tension or alignment. The motor on the roof burned out due to water ingress; the construction quality was very poor, but later sealing the wire ducts resolved the issue. The worst part is that neither the blowers nor the peristaltic pumps in the workshop have control circuits; they start up as soon as the plug is inserted, and they often burn out. In my opinion, this is because inserting the plug can easily lead to phase loss or high current levels
This post was last edited by lovelife1997 on 2020-6-16 at 13:03. 1. The technical capabilities for the daily maintenance, inspection, and management of equipment are insufficient; or, to put it more seriously, the maintenance workers, electricians, equipment departments, and electrical and instrumentation departments do not pay enough attention to the proper care of motors on a daily basis. 2. Is the current per unit voltage and the power supply stable at all times? ； Is a voltage stabilization device installed in the power supply circuit of the motor? ； When there is a problem with the motor, do the electrical engineers or electricians work together to address it, and do the equipment technicians check within the scope of their own responsibilities? 3. As for use by the production teams, is there a record kept of the operation of pumps for each shift? Is this information considered part of the handover documents, and are thorough checks carried out during handovers to determine when the pumps were switched over? ； How long has the pump been in use? ； How is the sound, vibration, temperature, pump speed, current, smell of the pump different from those in other shifts today? ； Under what criteria are the pump impellers rotated for start-up, shutdown, and maintenance? . . Can these be reflected in the pump operation record book for each shift?
A positive cycle has been established, achieving ecological balance.
In addition to the technical management issues mentioned by the above-mentioned individuals, there are also some insider-related issues. For example, some maintenance companies harbor elements who are harmful to the enterprise; there are issues with the quality of inspections, as well as problems with the motors themselves. The key lies in management; it’s a matter of people.
A bit more sunlight. Don’t think too darkly. Why should we talk about the craftsman spirit? Because craftsmen can’t even get enough to eat
The reason should be investigated. First, protection did not work; check whether the protection setting values are correct ； 2. The appropriate type of motor should be selected based on the nature of the process load ； 3. The motor should not operate at its rated power for extended periods of time; if it does, it indicates that the motor is undersized ； 4. Is the motor wiring correct? Motors operating in delta configuration should not be connected in star configuration ； 5 Is the insulation resistance of the stator windings within the specified limits? ； 6. Is there a missing phase in the main circuit, etc.?