Reasons and maintenance requirements of Cummins diesel generator for non-generation

Diesel generator if there is degaussing, or wiring error, and the circuit appears loose or fault, and voltage and current instability and other reasons, will lead to diesel generator can not start normal power generation, want to maintain the normal operation of diesel generator, daily maintenance should be more, the filter cleaning or replacement, keep the equipment clean and tidy, the following details.

First, what is the reason that diesel generators do not produce electricity

1. The remanence of the generator core disappears or is too weak: the newly installed unit is affected by the long-distance transportation vibration or the generator is placed for too long. The remanence of the generator core disappears or the remanence sensation is weak, resulting in the generator remanence voltage disappears or is less than the normal remanence voltage value, that is, the remanence line voltage is less than 10V and the remanence phase voltage is less than 6V.

2. Incorrect connection of excitation loop: when inspecting the generator set, the polarity of the excitation winding was accidentally reversed. After analyzing and energizing, the generator leasing company would cancel the magnetic field generated by the current of the excitation winding in the opposite direction of the remanence, resulting in the disappearance of remanence.

3, excitation circuit blocked: generator excitation circuit in the electrical contact is bad or each electrical component connector loose, lead break, resulting in circuit interruption, generator excitation winding no excitation current.

4. Circuit interruption on the DC side of the rotary rectifier Because the circuit on the DC side of the rotary rectifier is interrupted, the excitation current provided to the excitation winding cannot be sent to the excitation winding after the AC exciter is rectified by the rotary rectifier, resulting in the AC synchronous generator cannot generate electricity.

5, AC exciter fault no output voltage AC exciter fault can not send voltage, so that AC synchronous generator excitation winding no excitation current.

6. The excitation winding of the generator is broken or grounded, resulting in no excitation current of the generator or minimal excitation current.

Two, diesel generator maintenance requirements

1. Check and replace diesel filter and oil filter.

2. Clean and check the intake filter regularly, and replace it at a fixed period (or replace it according to the working condition of the site and the breathability of the intake filter).

3. Check and clean the battery string terminals regularly to keep the terminals clean.

4. Check the charging state of the battery pack during the definite period to ensure a good charging effect.

5. Check the status of the fan belt regularly to ensure that there is no damage and that the fan belt is in the normal tightness.

6. Check the coolant status regularly to ensure that it meets the requirements.

7. Check or replace diesel engine oil regularly to ensure normal oil level.

8, winter cold season to ensure that the unit preheating device works normally, so as to start the generator when it is necessary to start normally.

9. Check the oil return of the diesel tank before starting each time and keep it full.

10. Regularly clean the dust and other dirt on the outer surface of the generator set.

11, if the water cooling unit, but also regularly check the circulating cooling water system (water pump, water, etc.) is normal, should be normal control system.

Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.