Specific steps of generator power test
Generator rental describes the test steps of generator power generation. 1: Check whether there is any disconnection, misconnection, or short circuit in the connection parts of the external wires of the generator, and use a voltmeter to measure the battery voltage at point B +. 2: Down the key door to the "open" position, but do not start the engine. At this time, use a voltmeter to measure the voltage at point D + and observe whether the charging indicator is bright.
3: Start the engine, measure the voltage at point B + of the engine with a voltmeter, and the following values should be reached: generator lease 12V, system voltage is 13V or more while adding and subtracting throttle, voltage generator lease 24V, system voltage is 27V, and there is a slight change of 0.1 ～ 0.2V
4: Turn on some loads. For example, if the lamp 12V system voltage is above 13V and the throttle is added and subtracted at the same time, the voltage is 24V and the system voltage is above 27V. There is a moderate change of 0.2 ～ 0.4V.
5: Turn on the main electrical appliances such as air conditioners, lights, etc. 12V system voltage is above 13V while adding and subtracting throttle, voltage 24V system voltage is above 27V, there is a large change of 0.5 ～ 1V
When the third step is performed, the generator has no voltage output. You can take the following measures to check. For generators with a D + point that generates excitation, such as 27 series, 23 series, 29 series, and 19 series, a 2.5mm2 wire can be led from the positive electrode of the battery. After starting the engine, use the other end to instantly click on the D + point (within 1S of time).
Then use a voltmeter to measure whether there is voltage output at point B +. If there is, check from step 3 to step 5. At the same time, it is determined that the charging lamp line of the vehicle is disconnected (generally, the indicator lamp is damaged, and the instrument panel rod is connected. Loose, the line is open), if there is no voltage output, the generator has a failure to generate power.
- In the power generation industry in China, we have been working hard, pursuing the concept of quality and service, and for the sake of customers, the full power generator chooses China and your generator is a professional housekeeper. At present, the diesel generator set maintenance market refers to damage inspection and routine maintenance. Two aspects: after maintenance refers to the failure of the diesel generator, there are problems with various accessories, such as replacing the generator or
- The diesel engine is working normally, but the generator fails to generate electricity or the voltage is very low. This may be due to the components associated with the generator, such as: the exciter is damaged, and the excitation voltage cannot be supplied. The excitation current is taken in. The rotor's dead center residual magnetism is weakened or declining. It will make the generator unable to generate electricity or the transmission voltage is extremely low. The right to respond is usually: use an appropriate DC voltage and directly connect to the excitation winding according to the polarity Magnetization. Carefully inspect the exciter and the cyclotron rectifier, find abnormal components or windings, and replace them for restoration. The generator's transmission voltage is unstable, and
- Blue smoke, fire reason: It means that the engine is burning oil. There are three types of reasons: first, the piston ring goes opposite, and the oil comes in the cylinder; the second is the oil level of the oil pan of the atmosphere filter, which leads the ring. The height of the groove; Third, the gap between the duct and the valve stem is too poor. Expulsion idea: Adjust the piston ring so that the opening teeth of the ring are staggered 120 degrees or 180 degrees, and the opening teeth of the ring should avoid the piston pin hole and the side pressure is poor. Adjust the height of the oil level of the oil filter of the atmosphere filter below the height of the annular groove; if the clearance between the duct and the valve stem is too poor, replace the component and reduce the clearance. The normal mutual assistance clearance between the two is 0.0
- Before starting, you should check whether the fuel volume of the fuel tank is rich, and there is no oil leakage in each oil pipe and the discussion area; whether the cooling system water is rich, clean and leak-free, and whether the fan belt is tight or not. The internal combustion engine and generator drive parts should be connected and trusted. The wires of the input line are well-insulated, complete and effective in all aspects. After starting, it should run at low speed for 3 to 5 minutes. After the temperature and oil pressure wheel are normal, the initial work can be done. The generator should be no different in the speed increase. Ring, the slip ring and commutator are well brushed, no jumping and sparking phenomenon. After the operation is stable and the frequency and voltage reach the rated value, power can be supplied to the outside.
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