-
Anonymous users2024-02-11See whether the submersible pump motor is water-cooled, dry-type, or oil-cooled. If it is water-cooled, water must be added to the motor, and if there is no water, the motor will burn out.
There are two kinds of motors for water pumps: submersible pump motors and ordinary pump motors, submersible pump motors have waterproof functions and will not burn out, ordinary motors do not have water function, and water inlet is easy to burn out.
The main reasons for the pump burning motor are as follows:
Starting with load can cause damage to the motor, and the actual use of the head is too much lower than the pump nameplate head; The submersible pump works too long without water.
2.First of all, it is necessary to find out whether the motor burns the bearing (mechanical failure) or the coil (electrical failure).
3.If it is a fault of the burned coil, it is mainly caused by overcurrent, and sometimes the voltage is too high or too low will also cause the coil to heat up and short circuit, so first check whether the voltage during operation is too different from the rated voltage.
Overcurrent short circuit, there may be several reasons:
1) The equipment is overloaded, so that the motor runs at the rated current or over the rated current for a long time. In particular, it should be noted that the starting current of the motor is 3-5 times of the rated current, so it should be avoided to run under load or full load when starting the equipment (mainly depending on the matching margin between the rated current of the motor and the normal operating current).
2) The motor works in a humid working environment. Before the motor starts, the ground insulation and interphase insulation of the coil should be checked, and the insulation requirements for different voltage levels are also different, which can be checked with reference to the relevant national standards. During the operation of the motor, attention should be paid to the waterproof and moisture-proof of the motor.
3) The mechanical failure of the pump machine causes the motor to be overloaded, and the current is too large and the coil is burned.
4) The heat dissipation of the motor is problematic. Generally, the motor coil adopts an air-cooled shell, and the submersible pump is a water-cooled shell. Large motors are mostly cooled by air-to-air heat exchangers and air-water heat exchangers. If the cooling water (air) is cut off, the coil cannot dissipate heat, and the coil may be burned.
-
Anonymous users2024-02-10The shaft copy seal of the submersible pump is a general composite type, the outermost rubber seal has a skeleton type, and there is a transformer oil and combined mechanical seal inside, and the possibility of water ingress immediately due to improper assembly is relatively small, which is a dynamic seal. The average repairman will pay attention to this link. However, many places that need to be sealed statically may be ignored, such as the upper cover and the pump body, the lower bearing seat cover and the motor body, especially the place where the cable enters the pump body, which is the weakest link of the electric pump, sometimes due to damage and no suitable special cable replacement resulting in perfunctory things leaving hidden dangers.
Poor sealing in these areas may cause the motor to be immediately burned by water. Some electric pump housings have screw holes, which can be used for pressurized air leakage experiments after assembly.
-
Anonymous users2024-02-09The motor of the submersible pump is sealed, and the motor will definitely burn out if it is immersed in water.
-
Anonymous users2024-02-08Any motor will burn if it gets water, that's for sure.
I don't know if you have watched the beauty program of Travel Satellite TV I just did a program about shampoo for oily hair, first of all, you should pay attention to the choice of shampoo Many brands play the sign of oil and dandruff But you have to look at its texture when you buy It is necessary to choose the color is transparent Because the shampoo must add emulsifier The emulsifier will become milky white when it encounters oil or something So there will definitely be more or less oil in the colored shampoo So try to choose colorless When shampooing When you rub the shampoo in the palm of your hand to make a foam, then apply it to your head Gently press the scalp with your fingers, don't scrub vigorously, and then let the shampoo sit on your head for 3-5 minutes, you have oily hair, stay a little longer, about 5 minutes, don't be lazy, this will allow your hair to be thoroughly cleaned, even if you are in a hurry, stay for 1 minute and then wash it off, if you are styling your hair, apply a lot of styling products, you should first apply conditioner to dry hair, you should stroke the hair, do not rub it, and then wash it off, you will find some clumps in the water That's what you're left of the styling product that you're using -- these are the ones that you don't get clean with shampoo first, and then you wash them with shampoo, and then you use conditioner, and if you don't style them, don't use conditioner first, and don't apply conditioner to your scalp, just apply it to your hair.
1) Clarify the schedule of work and rest. When it's time to rest, you must take a good rest, don't allocate the rest time to studying, and don't study while resting, which will seriously affect your concentration. Clarifying the work and rest time is the key to improving learning efficiency, and the learning process is not only the accumulation of time, but more importantly, we should pay attention to the learning effect per unit time. >>>More
Fat face. Facial fattening alone can be difficult. Facial weight gain is actually a matter of facial muscle training. >>>More
What are some tips to keep yourself from getting drunk?
1. Choose a natural and moisturizing foundation, of course, it is indispensable to be able to cover imperfections, tap on the face, and use it with a gourd sponge to evenly base makeup and appear thinner. >>>More