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Possible causes of shotcrete machine motor burned
Main summarizes several reasons of shotcrete machine motor burned out, we clearly understand the cause, and we must learn to buy our own spraying machine maintenance, minimizing the chance of the motor burning out, and saving workers' time. Here we take a look at several possible motors to burn it.
Possible causes of the shotcrete machine motor burning out are:
First, the motor works long hours in the case of phase.
This is a killer three-phase asynchronous motor, the general quality of the motor burned out up to ten minutes. The most frightening is the lack of the entire power supply system phase, plus a lot of the switching device is self-locking or automatically open (such as pumps, and fans), sending an electrical accident phase after a power failure, it may burn about a dozen motor.
Second, motor oil, long dry scraping, no medium flow, and the motor overheating.
Insulation because water or moisture caused by decreased is also a common cause of damage, but there is no way to protect.
Third, the motor reverse time
If the protection function is normal (to install a proper thermal relay), it generally does not occur. But we must always pay attention to the thermal relay not being verified. The protection of value is not very accurate, and ultimately to make the failure to protect health.
Fourth, the short-circuit at the motor connection.
Among them, bearing damage, caused by worn caps, spindle wear, and rotor sweep chamber, causing burn injuries line package is also a primary reason. Other common reasons are: If the voltage is too low or too high, causing vibrations loose terminal phase short circuit, pest hazards, imported and domestic motor voltage mismatch, kind of decompression starter circuit fault causing no conversion, low-voltage electrical work for a long time, etc.
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