The reason why the no-load voltage is high after repairing the 15 kilowatt generator:
1. The rotation speed is too high;
2. The air gap. of the reactor during the excitation device is set too large;
3. The magnetic field rheostat is in open circuit;
4. The order of the phases of the main and auxiliary or additional windings. windings are poorly connected;
5. There are sparks in the brushes; Motor overheating: overload; armature coil short circuit; blocked ventilation duct; >6. The specifications of the lubricating oil do not match, there is too much, and there are impurities in the oil.
Solutions to excessive voltage of diesel generator
1. Inspect and maintain the diesel generator set and check the speed.
2. Pay attention to the reasonable load of the unit and eliminate the causes of overheating and other phenomena in timetimely.
3. Pay attention to replacing the lubricating oil of the unit
The reasons why the 15 kilowatt single-phase brushless generator does not produce electricity:
p>(1 ) It often loses residual power after shutdown. The magnetism is due to the fact that the material used for the excitation poles is close to mild steel and the magnetic field disappears when there is no current in the. excitation winding after shutdown.
(2) The magnetic poles of the generator lose their magnetism.
(3) The field circuit components are damaged or the circuit is open, shorted or grounded.
(4) There is poor contact between the exciter brush and the commutator or insufficient pressure on the brush holder.
(5) The field winding is incorrectly wired and has opposite polarity.
(6) The generator brush and slip ring have poor contact or thebrush pressure is insufficient.
(7) The generator stator winding or rotor winding is open circuit.
(8) Generator lead wire wiring is loose or switch has poor contact.
(9) Fuse is blown
Solutions to 15 kilowatt single phase brushless generator not generating electricity:
(1) Battery backup, when generating electricity Magnetize first.
(2) A direct current greater than the rated current (for a short period) is transmitted into the winding for magnetization. The specific current is determined by the test.
(3) Replace damaged components and repair faulty lines.
(4) Remove sharp dirt on the contact surface, adjust the brush pressure and tighten the brush holder.
(5) Correct the wiring and press the correct polarity for magnetization.
(6) Remove sharp scales on the surfacethis contact, grind the brush and adjust the brush pressure so that the brush and the slip ring are in close contact.
(7) Check and repair the broken circuit.
(8) Connect the connector or repair the contact part of the switch.
(9) After identifying the cause of the fuse and concluding that the generator itself and the circuit are normal, replace the specified fuse.