How to maintain a diesel generator that does not generate electricity

Treatment: Check and correct according to the wiring diagram.

2. Phenomenon: The speed is too low.

Handling: Measure the rotational speed and keep it at the rated value.

3. Phenomenon: There is sludge or oxide in the terminal between the stator winding and the generator distribution equipment, the wiring screws are loose, the connecting wire is broken, and the stator winding is broken.

Treatment: Use a multimeter or test lamp method to find out the broken wire. Check the connection and contact of each wiring screw.

4. Phenomenon: The excitation circuit is disconnected or the contact is poor.

Treatment: Use a multimeter to find out the broken wire, and re-weld the broken wire and wrap the insulation.

5. Phenomenon: Rectifier tubes (including rectifier diodes and thyristors) are damaged.

Treatment: Replaces the damaged component.

6. Phenomenon: poor contact between the brush and the slip ring or insufficient brush pressure.

Treatment: Clean the surface of the slip ring, polish the brush to make it consistent with the surface of the slip ring, and increase the pressure of the brush.

7. Phenomenon: The brush grip is rusty, and the brush cannot slide up and down.

Treatment: Wipe the inner surface of the brush grip with an abrasive cloth, and replace it if damaged.

8. Phenomenon: The position of the exciter brush is incorrect, the brush is damaged or the spring pressure is not enough.

Treatment: Adjust the brushes to the correct position, replace the brushes, and adjust the spring pressure.

9. Phenomenon: The rotation direction of the prime mover is wrong.

Treatment: Change the direction of rotation of the prime mover.

There are four reasons why the generator does not generate electricity: 1. There is no remanence in the excitation winding of the tung rot generator. 2. The contact between the brush and the slip ring is poor or the spring pressure is too small.

3. F1, F2, S1, S2 are open. 4. The pressure regulator is loose or damaged. In view of the above fault causes, customers need to take the following measures:

1. Magnetize the generator wheel (F1 is positive, F2 is negative 24V). 2. Check the carbon brush holder and carbon brush. 3. Use a multimeter to measure the resistance between F1, F2, S1 and S2.

4. Check or replace the pressure regulator.

1. The remanence is often lost after shutdown, because the material used for the magnetic pole of the exciter is close to mild steel, and the remanence is small, and the magnetic field disappears when there is no current in the excitation winding after the shutdown.

2. The magnetic poles of the generator lose their magnetism.

3. The excitation circuit components are damaged or the line is open-circuited, short-circuited or grounded.

4. The contact between the exciter brush and the commutator is poor or the pressure of the brush holder is insufficient.

5. The wiring of the excitation winding is wrong, and the polarity is opposite.

6. The contact between the generator brush and the slip ring is poor, or the brush pressure is insufficient.

7. The stator winding or rotor winding of the generator is broken.

8. The generator lead wire is loose or the switch is in poor contact.

9. The fuse is blown out.

How to deal with diesel generators not generating electricity:

1. The standing battery should be magnetized before generating electricity.

2. Direct current (very short time) is introduced into the winding to be magnetized with a large amount of direct current than the rated current, and the specific current is determined by the test.

3. Replace damaged components and repair faulty lines.

4. Remove the sharp dirt on the contact surface, adjust the brush pressure, and tighten the brush holder.

5. Correct the wiring and press the exact polarity for magnetization.

6. Remove the sharp dirt on the contact surface, grind the brush, adjust the brush pressure, and make the brush and the slip ring in close contact.

7. Check and repair the open circuit.

8. Connect the joint or repair the contact part of the switch.

9. Find out the cause of the fuse, and replace the specified fuse after determining that the generator itself and the circuit are normal.

After the diesel generator set starts, there is no voltage is likely to be no magnetic field, which can be solved by the following methods: First look at the gloss of the two slip rings, if there is no luster, rub it with an abrasive cloth until it becomes bright, if it is not good, take a very thin fuse, connect the three-phase four-wire on the generator casually to two, and then start the engine, the fuse will automatically blow, and then the voltage will come up.

Diesel generators do not generate electricity maintenance methods:The main reason why diesel generators do not generate electricity is caused by damage to the rectifier diodes inside them. After inspection, it is determined that the rectifier diode is damaged and the location of the tremor can be temporarily cut off, and although this will reduce the output power of the generator, it can continue to be used.

It may also be the reason for the expiration of the term, no matter what parts, there is a service life, the eggplant wheel is pure after the expiration of the year, the tung withered, it will be damaged, the same is true for the generator, this damage is unavoidable, it is also a normal damage, in this case there is no other way but to replace.

The damage of the generator is not necessarily its own problem, sometimes the failure of other electrical components will also be the failure of the generator, such as current instability, line failure, etc. will cause generator failure, such as car lighting system, dashboard, ignition system, etc.

Diesel generators do not generate electricity maintenance methods:1. Measure whether there is really electricity, and replace the voltmeter with the generator.

2. Hit it to automatic or manual.

3. Check and correct according to the circuit diagram.

4. New generators or machines that have not been used for a long time can easily appear. The stove can be magnetized by pressing the recharge button on the control screen, or the excitation winding can be magnetized with a 12V battery, the positive pole is connected to F1, and the negative pole is connected to F2. If the voltage still cannot be established, switch the positive and negative poles of the battery and try again.

5. Clean the surface of the ring, and sanding the end face of the carbon brush to make the arc match area with the surface of the collector ring greater than 70%, so as to strengthen the pressure of the spring of the projectile.

6. Clean the carbon brush and the carbon brush grip so that the carbon brush can move freely and collapse the beam.

7. Use a multimeter to check the forward and reverse resistance of the diode, and replace it if damaged.

8. Check with a multimeter, and replace it if the forward and reverse resistance does not meet the requirements of the diode.

9. Check the winding with a multimeter 1k file, and if the resistance value is infinite, it should be turned on. Then check with 1 ohm, if the resistance value is zero, replace or dispose of the winding. If it is unstable, check whether the connector wiring is loose.

Check to see if the generator is demagnetized, and if so, use a dry battery to magnetize.