The reason why the water pump composes a set of power motor overheating

There are four reasons for the overheating of the power motor composed of a water water pump. One is the reason for the power supply: the voltage is too high or too low. Under the specified load, if the voltage change range should be outside the rated value of +10% to -5%, it will cause the motor to overheat; the three-phase voltage of the power supply is incorrectly stated. The unfair balance of the three-phase voltage between the phases exceeds 5%, which will cause the winding to overheat; the lack of phase operation, experience has shown that more than 85% of the destruction of agricultural motors is caused by the lack of phase operation, and the installation of the lack of phase of the motor takes care of the device. The second is the reason for the pumping machine: the selection of power does not form a set, the small horse-drawn cart, the long-term reloading of the motor, the motor temperature is too high; the motor that starts to work too many times, and is rated as a transient or intermittent office system continues Office. The number of starting work cycles should be limited, the heat should be selected accurately, and the rated use measured on the motor should be used. The third is the cause of the motor itself: incorrect connection, wrong connection of △ shape into Y shape, rapid increase of the temperature of the motor; short circuit between phases, short circuit between turns or partial grounding of the stator winding, and the motor part is overheated at a slight time, serious When the insulation is burned out; the squirrel cage rotor is broken or lacking, the motor runs for 1 to 2 hours, and the temperature of the iron core rises rapidly; if the ventilation system fails, check whether the fan is damaged, the direction of rotation is accurate, and whether the ventilation duct is congested; Abrasion and unfair sweeping of the rotor make the stator and rotor cores rub against each other and emit metal impact sound. The temperature of the core rises rapidly. In severe cases, the motor emits smoke and even the coils are burnt and destroyed. The fourth reason is the background of the office: Moisture in the motor windings or dust, oil, etc. attached to the windings, resulting in reduced insulation. The insulation resistance of the motor should be surveyed and thoroughly cleaned and dried; the background temperature is too high. When the background temperature exceeds 35℃, the temperature of the inlet air will be high, which will cause the temperature of the motor to be too high, so we should find ways to improve its office background. Such as scaffold shading and so on. Note: due to electrical faults, you should ask an electrician who has obtained a professional qualification certificate for repairs. People with a little knowledge should not understand the repairs to avoid accidents that damage personal life. Water water pump factory, water water pump factoryu003c/pu003e
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