Generator kWh Reduces

Did you call the vendors, Dude?

Why would you call the vendors "dude"?? _{(or anyone for that matter)}

I have always maintained that there is no such thing as an electrical failure. Most so-called electrical failures are in fact mechanical failures. Other types can be blamed on an assortment of other things, but I've never known electricity to refuse to move, given a path.

After three years of service, a generator will probably benefit from replacing the bearings. Rewinding it may also improve it, if it is done correctly. Little details like bend radius (on the 90° or more turns) and insulation thickness have a way of ruining your best effort if you don't get it right. Ultimately, the accumulated failures are a result of heat and mechanical forces.

It would seem that the advertisement is just letting you know that nothing lasts forever. Wouldn't it be interesting if all manufacturers were so truthful?

Anon poster 1: Unfortunately, it was the vendor who said this!

Notodinaryguru: yes, what you mentioned is correct. It is the mechanical works, joints, connections and coupling that results in an electrical failure. As long as electricity has the suitable path, it WILL flow. However, something about the vendor's words seems to point at a gradual drop in kW after use like it can not be rectified even through maintenance, rewinding, etc. Some sort of permanent ageing.

Ramconsult: Thanks for the great insight. Any thoughts or ideas on this?

Matthew, Alternators have essentially one moving part (aside from the seal oil and lubrication systems) with no wear surfaces or contact between rotor and stator except for the shaft bearings. I have seen the insides of properly operated and maintained 40+ year old utility alternators that looked like they just came off the factory floor.

When it comes to heavy electrical equipment please follow Henry Ford's advice, "If it ain't broke don't fix it!" unless the manufacturer, NOT the vendor, recommends it in their maintenance manuals. Unfortunately it sounds like your vendor's salesman is utilizing the FUD (Fear, Uncertainty, and Doubt) method of drumming up some extra business. I would politely thank him for his recommendations and then call the manufacturer directly.

as per International standards diesel generator engines are manufactured as Stand By rating designed to run 200Hours in an year i suppose you are located in US where generators dont run more then 100Hours in a year the logic of your vender is set derates after two years and needs major components of the engine needs replacement.other two ratings are prime and continues ratings that have longer duration between major overhauls,and the running hours are more your alternators have no problems with Running Hours

Dear Mr. Mathewkyle,

I am of the opinion to boost their business they may say so.

But in fact, the Engine Performance may fall on account of the following factors in course of time. Hence Good Maintanance is to be done.

1. Reduction in Compression Ratio of the engine, due to leakage through Piston Rings.

2. Poor performance of the Inter-Cooler for the air sucked for combustion.

3. Improper Fuel Injection for atomisation for good combustion and Heat Release.

Thanks,

DHAYANANDHAN.S

Thanks to all. It seems more like a marketing gimmick. Thanks indeed for teh great ideas and explanations.

Yes, thank you all for the input.