How to measure the quality of YY HS 75 motor?

Step 1. Check whether the insulation resistance of the motor coil is greater than the megaohm with the insulation resistance shake table, if it is greater than the megaohm, it means that the insulation performance of the motor is good;

Step 2. Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

Step 3. Manually rotate the shaft of the motor, check whether there is no disc immobility, abnormal noise, etc.;

Step 4. It is no-load energized, check whether the 3-phase current of the motor is balanced, whether the motor runs smoothly, temperature rise, abnormal noise, etc., after the above 4 steps of inspection if it is normal, then the motor is good.

Normally, as long as you use a universal ammeter or a universal voltmeter, you can measure its quality or disadvantage, and relatively speaking, it is easier to achieve the effect and better.

You just need to measure this with a multimeter, and if there is no problem, it will be turned on, otherwise it will be disconnected.

You can go and measure with a professional instrument, so it is best to measure.

How to measure the quality of the good, there are no specific measures, I can't say, you go online to check it and see if everyone has any comments. Also, if you have an electrician or repairman who understands the motor, ask them for advice. They will give you one. answers.

This is actually more difficult, then you must find a professional, he has professional tools.

It's hard to detect good or bad, and sometimes there's no way it's not professional, there's no way.

If you want to test the quality of one of his motors, he is very, very simple and directly preview it, so that you can.

Tomorrow I will find someone who will test professionally, and he will help you identify the good and bad.

If you want to measure the good and bad, I think this is relatively close, and you should want to make some better choices about the intake.

There is no short circuit in any binding post to the shell, and the resistance of each three-phase electrical connector is the same (disconnect the power supply, use a multimeter to measure r*10 gear). There are no short circuits and open circuits, that is, good.

It should be good to measure the resistance and inductance between the three connectors separately if they are all the same or close.

The following is an introduction to the measurement methods of AC motors and DC motors.

AC motor quality measurement method:

Shake the meter, 500V can shake the meter, shake the insulation resistance value of the line on the three binding posts to the motor shell, it should be above Europe, it means that there is no short circuit to the ground.

Multimeter measurement: measure the resistance value between the three phases of A, B and C, whether it is equal, it should be about the same, and the difference is too much, but it will not take long, remember that the larger the motor, the smaller the resistance! But you can't all three phases be 0 ohms, unless you are particularly large, such as a motor above 50kw!

Remember, if it is a speed regulating motor, the resistance value of the 6 terminals is not the same!

Check the bearings and fans, and generally wrap the motor to let it be replaced! Because sometimes the bearing will burn the motor!

The no-load current of the motor is generally 10 50 of the rated current, and sometimes the idling current of the motor is zero!

When the rated current of the motor is running, it is running at full load, and the output power is basically 100. The running current is small, which means that the output power of the motor becomes smaller, and it is a light load operation.

There is no three-phase electricity, find a starting capacitor of a washing machine, and connect it to 220V!

DC motor quality measurement method:

If you rotate the motor by hand, if you feel that there is obviously a large resistance, it means that there is a short circuit point inside the motor. **Stable movement is normal).

Connect the positive and negative electrodes, there will be a lot of resistance when you twist it by hand, which means that the line is normal. Otherwise, there are circuit breaks inside.

Observe the reversing spark when the power is turned on, no spark is the best, there are sparks that are good in the sparks, and the sparks are connected into a line is poor, and the ring fire phenomenon can not be used. (The lifespan will be drastically shortened).

After running until the temperature rise is stable, the surface temperature of the motor should not exceed 80 degrees Celsius. If this value is exceeded, it means that the temperature rise of the motor is not up to par.

When the temperature rise is stable, the resistance of the winding is measured with a multimeter when the machine is stopped. It is generally a few tenths to a few ohms.

Add the rated voltage, measure the speed, and the error from the marked speed should not exceed 10%.

Add double the rated voltage, run for 2 minutes, and observe whether there is any abnormality.

After the above checks, it is OK if there is no problem.

Supplement: Use a multimeter to measure the inter-chip voltage between the commutators, if there is no same law between the two discs of the inter-chip voltage, it means that the winding is normal.

A DC motor is a rotating machine that converts direct current energy into mechanical energy (DC motor) or mechanical energy into direct current energy (DC generator). It is a motor that can convert direct current energy and mechanical energy to each other. When it is used as a motor, it is a DC motor, which converts electrical energy into mechanical energy; When the generator is running, it is a direct current generator, which converts mechanical energy into electrical energy.

AC motors"It is a machine used to realize the mutual conversion of mechanical energy and alternating current energy. Due to the tremendous development of AC power systems, AC motors have become the most commonly used motors. Compared with DC motors, AC motors have simple structure, easy to manufacture, and relatively firm, and are easy to make motors with high speed, high voltage, high current and large capacity because there is no commutator (see commutator for DC motors).

The power of AC motors covers a wide range, from a few watts to hundreds of thousands of kilowatts, or even millions of kilowatts.

Answer: It is completely okay to check the quality of the motor with an electronic meter. 1. Whether it is an electronic meter or a voltmeter or an ammeter, connect the meter string a 1 battery to the neutral point of the three-phase winding l of the motor and the motor winding in turn, and the meter has a reading after three tests, saying that the motor winding is good;

2. Then, with the same method, test the neutral point and the ground (that is, the base), if the table does not have any indication, it means that the motor is well insulated to the ground.

The motor can be powered on for test (the motor does not have it).

Measurement method of motor quality:

1. Check whether the insulation resistance of the motor coil is greater than the megaohm, if it is greater than the megaohm, it means that the insulation performance of the motor is good;

2. Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

3. Manually rotate the shaft of the motor, and check whether there is any disc immobility, abnormal noise, etc.

4. Check the quality of the motor.

1. Check whether the insulation resistance of the motor coil is greater than the megaohm, if it is greater than the megaohm, it means that the insulation performance of the motor is good;

2. Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

3) Manually rotate the shaft of the motor, check whether there is no disc immobility, abnormal noise, etc., the fourth step is no-load energization, check whether the 3-phase current of the motor is balanced, whether the motor runs smoothly, temperature rise, abnormal noise, etc., after the above 4 steps of inspection If it is normal, then the motor is good.

Answer: Hello, you can check it like this, 1. Use the insulation resistance shake table to check whether the insulation resistance of the motor coil is greater than the megaohm, if it is greater than the megaohm, it means that the insulation performance of the motor is good; 2. Use the multimeter resistance file to test whether the DC resistance of the three windings of the motor is the same, which means that there is no inter-turn short circuit between the coils of the three windings.

Measurement method of motor quality:

1. Check whether the insulation resistance of the motor coil is greater than the megaohm, if it is greater than the megaohm, it means that the insulation performance of the motor is good;

2. Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

3. Manually rotate the shaft of the motor, and check whether there is any disc immobility, abnormal noise, etc.

Check the quality of the motor:

1. Check whether the insulation resistance of the motor coil is greater than the megaohm, if it is greater than the megaohm, it means that the insulation performance of the motor is good;

2. Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

Ask how to use a multimeter.

Answer: Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings.

Use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if it is the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings;

Ask which test to use.

First, measure the insulation resistance of the winding to the shell. Second, measure the resistance value of the winding.

Use a multimeter to check if the power is on, if you still can't find the problem, open the lid and see if the coil has burned out.

Is there a specific type? After all, there are different judgment methods for different types and different uses.

To check the quality of the motor, the first step is to check whether the insulation resistance of the motor coil is greater than the megaohm with the insulation resistance shake table, if it is greater than the megaohm, it means that the insulation performance of the motor is good; Step 2, use the multimeter resistance file to test whether the DC resistance of the 3 windings of the motor is the same, if the same or the size deviation of the DC resistance of the 3 windings is very small, it means that there is no inter-turn short circuit between the coils of the 3 windings; Step 3, manually rotate the shaft of the motor, check whether there is no movement, abnormal noise, etc., the fourth step, is no-load energized, check whether the 3-phase current of the motor is balanced, whether the motor runs smoothly, temperature rise, abnormal noise, etc., after the above 4 steps of inspection if it is normal, then the motor is good.

There are 5 control wires of the brushless motor of electric vehicles, the red wire and the black wire are the positive and negative poles of the power supply of the three Hall elements in the motor, and the remaining three are the output terminals of the three Hall elements. Disassemble the control plug and insert only the red and black wires. Connect a multimeter, use a DC voltage of 10 volts, and connect the red wire to the red plugged wire.

In addition, the three thick wires are motor wires, as long as there are ohmic resistance between the wires and the resistance value difference is very small, it can be judged that the motor is good.

The details are as follows: 1. Introduction.

Depending on the environment in which it is used and the frequency of use, the form is also different. Different forms of motors have different characteristics. At present, permanent magnet DC motors are commonly used in electric vehicle motors.

Electric vehicle motors can be divided into two categories: brushed motors and brushless motors according to the energizing form of the motor; According to the mechanical structure of the motor assembly, it is generally divided into"There are teeth"(The motor speed is high, and it needs to be decelerated by gears) and"Toothless"(motor torque output without any deceleration).

2. Equipment classification.

Drive motors used in electric vehicles are not the same as conventional industrial motors. The drive motor of an electric vehicle usually requires frequent starting, stopping, acceleration and deceleration, high torque at low speed or climbing, low torque at high speed, and a wide range of shifts. Industrial motors, on the other hand, are usually optimized for rated operating point.

Therefore, electric vehicle drive motors are unique and should be grouped together in a separate category.

3. Working principle.

An electric motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (that is, the stator winding) to generate a rotating magnetic field and acts on the rotor squirrel cage closed aluminum frame to form a magnetoelectric dynamic rotation torque. The motor is divided into DC motor and AC motor according to the different power sources, and most of the motors in the power system are AC motors, which can be synchronous motors or asynchronous motors (the magnetic field speed of the stator of the motor is not synchronized with the rotation speed of the rotor).

The motor is mainly composed of a stator and a rotor, and the direction of the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic inductance line (magnetic field direction). The working principle of the motor is the effect of the magnetic field on the current force, which makes the motor rotate.

There are special measuring tools for electric vehicles, which are not very expensive about 50 yuan. You can also use a digital multimeter, open to the resistance 20k gear, and measure the three thick wires of the motor are all passable. Use a red pen to measure the black line of Hall's negative electrode, and then use a black pen to measure the yellow, green, and blue signal lines, and you will get three of the same values, such as or as well.

The motor value of different factories is not the same, the positive red line is not passed, when the red line is measured with the red pen, the black pen measures the three signal lines, and then the display is not passable. It may be better to display the black line when the black pen measures the negative pole. The measurement shows that it is bad, and the corresponding Hall needs to be replaced with the same model.

However, it is usually the easiest way to replace the dual-mode universal controller. You can also use a good rotating motor as a reference measurement, which will be more effective and more memorable.

I'd love to help you!