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a) The cooling pipeline of the high-voltage motor is damaged, resulting in the loss of relevant coolant inside the pipeline, and eventually the temperature of the high-voltage motor rises sharply and fails;
b) Other impurities are mixed into the coolant in the cooling system of the high-voltage motor, resulting in pipeline corrosion and blockage, and finally the temperature of the high-voltage motor rises and the motor fails;
c) There are some heat dissipation problems in the heat dissipation duct in the high-voltage motor, which eventually leads to a sharp rise in the temperature of the motor and causes a failure.
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Summary. Hello, the most serious fault of the high-voltage motor is the phase-to-phase short circuit fault of the stator winding, which will cause serious damage to the winding insulation of the motor itself and burn the iron core, resulting in a decrease in the voltage of the power supply network, affecting or destroying the normal work of other users. I hope mine can help you and I wish you a happy <> life
What is the most serious failure of a high-voltage motor.
I'm sorry I don't understand, but can you elaborate on that?
Hello, the most serious fault of the high-voltage motor is the phase short circuit fault of the stator winding, which will cause serious damage to the winding insulation of the motor itself and burn the iron core, resulting in a decrease in the voltage of the power supply network, affecting or destroying the normal work of other users. I hope mine can bring Kai Shu to help you, and I wish you a happy life [Twilight Sun Yin smiled] <>
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1. If the fins are dusty, they need to be washed with water; If there is a lot of catkins (especially around May), the fins need to be cleaned to keep the condenser fins clean.
2. Check the distribution box of the machine.
Whether the air open is tripped, if it trips, it means that the current is too large or the air open is bad, you need to check the line or air open.
3. After shutting down, use a screwdriver to dial the fan blades, if it is too wrinkled, it means that the fan bearing is damaged or the fan is burned, and the bearing needs to be replaced. Fans.
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Phase-to-phase short-circuit fault of stator windings.
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How to prevent high voltage motor from burning out? If you want to prevent it, you must first understand the various causes that cause the high-voltage motor to burn, so what is the cause of the high-voltage motor burning?
High-voltage motor refers to a motor with a rated voltage of more than 1kv, which has the advantage of high power and strong impact capacity, and the disadvantage is that it has large inertia and is difficult to start and brake. High-voltage motors are widely used to drive a variety of different mechanical equipment, such as compressors, pumps, crushers, cutting machine tools, transportation machinery and other equipment, for mining, machinery industry, petrochemical industry, generators and other industries as prime mover. During the operation of high-voltage motors, it is sometimes encountered that the motor burns out.
1. Due to the long-term operation of high-voltage motor equipment, the equipment has a certain aging phenomenon;
2. There may also be local defects in the manufacturing quality, process, and dielectric strength of high-voltage motors;
3. Improper operation of high-voltage motor in overhaul and maintenance;
4. Lack of scientific and reasonable use of high-voltage motors in operation;
5. Frequent start-up accelerates the degree of insulation aging of the stator coil of the high-voltage motor, which leads to the metal fatigue of the rotor cage of the high-voltage motor, resulting in the fracture of the rotor cage or the phenomenon of melting aluminum, which causes the broken cage to sweep the stator coil away, and the above situation will cause the motor to burn.
Taizhou Zuoli Motor suggests that users of high-voltage motors should pay attention to the rational use of high-voltage motors in daily use, and timely overhaul and maintenance to ensure the normal and stable operation of high-voltage motors and prolong the service life of motors.
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There are several types of faults that often occur in high-voltage motors:
Low insulation resistance of the motor, failure of winding insulation breakdown, grounding and lead wire, loose wedge of the motor stator slot, poor end lashing, failure of motor rotor, failure of motor bearing.
Motor vibration failure.
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There are several types of faults that often occur in high-voltage motors:
Low insulation resistance of the motor, failure of winding insulation breakdown, grounding and lead wire, loose wedge of the motor stator slot, poor end lashing, failure of motor rotor, failure of motor bearing.
Motor vibration failure.
The equipment used for the test of high-voltage electrical equipment includes: mass loss measuring instrument, capacitance and inductance detector, transformer comprehensive tester, DC high-voltage generator, megohmmeter, arrester resistive current tester, switch mechanical characteristics tester, AC-DC dual-purpose voltage divider, underground lead conduction tester, relay protection test device, loop resistance meter, clamp phase meter, DC resistance tester, insulation resistance tester, test transformer, ground network comprehensive tester, meter calibrator, triple frequency voltage generator, Current transformer error analyzer, high current generator, etc.
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When a capacitor is put in, it will generate an inrush current that is more than 5 times greater, and unless a larger reactor is added, the inrush current may cause a quick-break protection operation. If it is a trip caused by the inrush current (the input is tripped instantly), the inrush current will be greater if the reactor is removed, so it is not recommended to remove the reactor, and the setting time limit of the superior circuit breaker can only be appropriately adjusted in this situation; If the capacitor trips after a few seconds of input, it should be considered that it is caused by harmonic resonance, and the reactor can be removed.
1. Cause analysis:
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