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generator set will occasionally encounter generator failure in the process of use thatCummins generator setis not generating electricity. What is the cause of it? And what to do about it? In fact, there are a lot of reasons that Cummins generator set is not generating electricity. The following is compiled by Jiangsu Starlight Electricity Equipment Co.,Ltd to summarize the main reasons for generator not to generate electricity and the treatment methods.
Why a generator won't produce electricity?
After the unit is running, the generator rotational speed reaches the rated speed, the AC exciter stator excitation circuit switch is closed, the voltage regulator is raised to the maximum direction, at this time, the generator has no output voltage or the voltage is very low. That's why a generator fails to produce electricity.
Generator is a device that converts mechanical energy into electrical energy for use in an external circuit. At present, generators are widely used in industry and agriculture, national defense, science and technology as well as our daily life.
What type of load (electrical) was hooked up to this generation?? If the surge
voltage and current was exceeded above the generator maximum for any length of
time. There problems, it could be the regulator, insulation burnt off the
windings.
I am taking a guess here. Now, 7100 Watts is it typical surge wattage. This
mean that the generator will deliver 7100 Watt (voltage times current) this is
know as the power factor. The actual operating load would be 6800 Watts and I
would even operator the generator at its peak wattage. Something in the
neighborhood of 10--15% less the peak wattage. Therefore a good positive
theatrical Wattage would be 5800 to 6350 operating wattage. Then this generator
would run all day.
Just remember Ohm's Law. Current plays a big factor in loading of a generator
while the operation voltage is at 120 AC Volts. Example: electric motor; Now
electric motor when starting will pull three time its operation current.
Operating current for a 1/2 HP AC motor is 6 amperes but start this electric
motor will require 18 amperes. This is one reason why they starting capacitors
on smaller electric motors. Larger three phase electric motor can literal stop a
generator cold...in its tracks. It put such a large demand on the generator it
stops the engine powering the generator. I have seen crankshaft break because
the generator could handle the heavy current load.
Remember, any time you are running a small gas powered generator. All ways
figure what the load and surge current load will be before hooking up any
generator. Normally this is figured in VA (volt/amps). Wish you lock.
GB...stewbison
Check the following:
AVR
doids windings
stator windings
rotor windings
exciting windings
AND
Exiting windings could have losts its 12volt exiting load. In that case it must be exited by 12 volt external battery
Another common problem is burned off wire or loose connection
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