I would tend to agree with you however our electrical department does not get into generation issues on a regular basis and I have a very proficient power systems engineering consultant agreeing with the supplier on this one. While I don't want to get into the politics of project management and discipline boundaries, suffice it to say we get along very well here. I am merely trying to sort through conflicting information perhaps with some unbiased experience.

Electrical still makes the electrical decisions. So, back to the question, how useful is the flux sensor on our type of machine? RE: Flux Probe monitoring on 4 pole, 1800 rpm generator (Electrical) 18 Jan 12 18:46.

Fluke Corporation is the world leader in the manufacture, distribution and service of electronic test tools, biomedical equipment and networking solutions. Moving a coil in a magnetic field induces a voltage proportional to the change in flux seen. All magnetic probes. Field strengths with a fluxmeter.

I presume the purpose of the flux probe if to detect shorted turns. There is a dramatic difference in progression of shorted turn fault in an ac winding (like motor stator) compared to dc winding (like generator rotor). The ac winding short immediately brings local high currents in the shorted loop due to auto transformer effect, which causes rapid escalation of the fault. On contrast the dc winding has no auto transformer effect and the current change is only a result of impedance change which usually is small, especially with several could in series. So we expect a lot of time to detect the shorted rotor winding and schedule repairs before the fault disrupts the machine.

Fault can be seen from increased vibration, and possibly change in field current for a given operating condition. That's not a definitive rbasis just some thoughts fwiw.I'm not a big generator guy. ===================================== (2B)+(2B)'? RE: Flux Probe monitoring on 4 pole, 1800 rpm generator (Electrical) 18 Jan 12 18:49. Hey Pete, you managed fewer typos on that little screen than I manage on the big one. In my opinion unless you have the rotor out for some reason then it would not be worth the effort of unthreading it specifically to fit an air-gap search coil. If the opportunity is there then it is certainly worth considering as the cost of installation isn't all that high and a 25MW set is still a fairly pricey piece of plant.

---------------------------------- If we learn from our mistakes I'm getting a great education! RE: Flux Probe monitoring on 4 pole, 1800 rpm generator (Mechanical). I really should not have brought up the cost because the sensor is only the tip of the iceberg and it is not terribly relevant. Game Psp Lego Batman 2. It will cost whatever it costs. I want to know if anyone with in the field experience has seen flux probes provide a real benefit to a ~25 MW 4 pole machine? What were they? Did you catch a failing winding or something else?

Is there someone out there who wishes they had flux monitoring as it would have saved a headache or two? Dell Xps 14z Drivers here. It's about utility. I could probably pay to get pin striping put on the generator. It would look nice but it doesn't change the performance or reliability so what 's the scoop?

Is this flux monitoring pinstriping or practical? Forget I mentioned pinstriping. I'll probably hit a nerve with the hotrod crowd.

RE: Flux Probe monitoring on 4 pole, 1800 rpm generator (Electrical) 20 Jan 12 11:34. It's a means of detecting a shorted turn on the rotor. A shorted turn on the rotor will probably not hurt anything in the short term, but at high excitation you may develop a thermal bend in the rotor which will cause an imbalance and maybe a vibration trip. The benefits of having it on a small unit are no different to the benefits on a large unit.