The load is getting tripped due to over current and low voltage. When we check the frequency of generator found around 43 HZ only. What is the reason for these fault?
2006-09-06 22:46:43 · 7 answers · asked by Kannan 2 in Science & Mathematics ➔ Engineering
The prime mover (engine) is turning too slow. Most generators are direct coupled to the engine in some fashion, which means that the frequency is directly related to the engine RPM. Most smaller generators use a 2 pole alternator, which requires an engine speed of 3600 RPM (at 60Hz) or 3000 RPM (at 50Hz). Mid size generators will usually use a 4 pole alternator and run at 1800 RPM (60Hz).
There could be several reasons for the slow down. If the engine is in good shape, and the unit is not overloaded, it could be an issue with the governor. The governor is a device that tries to keep the engine speed constant. If it has been adjusted (mis-adjusted) it will cause the engine to either run faster or slower than desired. In some generators, the voltage regulator will react to the low frequency by reducing voltage. If you are applying a load that requires a given amount of power to operate, and the voltage is low, the amperage must increase (ohms law). The circuit breaker will see the increased current and possibly trip out, even though you are not overloading the generator. Try adjusting the no load speed to about 62 or 63Hz. This should provide a full load speed of about 58Hz.
2006-09-07 07:36:49 · answer #1 · answered by shfincter S 2 · 0⤊ 0⤋
Most likely, you are "pumping" too much out of your generator. (I assume it is a generator powered by a petrol/diesel engine).
As the load increases, the engine tends to run slower (hence lower frequency) if it has not a "stabiliation feedback loop".
In running slower, your load might demand more current as well, so it trips...
Check the total power of your load. Multiply by 1.3. This is the minimum power you need for your generator.
2006-09-06 23:18:49 · answer #2 · answered by just "JR" 7 · 0⤊ 0⤋
you say eastern generator, became into it made for export? you've gotten the desire to make certain it is 60Hz, your air conditioners possibly won't like 50Hz. Your unmarried area home equipment will run on between the three levels. in spite of the undeniable fact that, to hire the completed generator output you will would desire to distribute the lots over all 3 levels, you are able to no longer get the completed capacity out of only one. in case you're using a pass swap to apply your present breaker panel and abode wiring you would be able to desire to have some issues getting finished capacity considering the fact that your present panel is possibly no longer 3 area.
2016-12-12 04:06:26 · answer #3 · answered by kull 4 · 0⤊ 0⤋
there might something wrong with the motor itself. It is not spinning at the rpm's that is required by the generator. That will happen if your generator is spinning to slow. Start looking into the motor. Normally 3600 rpm's is what a generator is looking for.
2006-09-07 02:41:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Your engine or whatever powers the generator is slowing down. Change your air and fuel filters first
2006-09-06 23:45:37 · answer #5 · answered by A M 1 · 0⤊ 0⤋
2 pts yeah
2006-09-07 00:47:26 · answer #6 · answered by Anonymous · 0⤊ 1⤋
over loading
2006-09-07 00:20:11 · answer #7 · answered by Anonymous · 0⤊ 0⤋