Відео

Indeed 🙂

@danware5857 Hey brother! Yep, we climbed outta Glenbard, I think. Tommy Butts was one of our demos. Small world. R u still at ComEd? Im workin 4 Geneva atm, Loc 196.

The transformers are homemade. Various parts from around the shop were used to construct the tanks and bushings. The cores are made from old isolation transformers, originally used for street lighting. They have multiple tap arrangements which allow for proper voltage transformation. High sides are usually fed 120 wye. This produces 120/208/240 out the bottom. If the high sides are fed 208 delta, however, then everything out the bottom has the same ratios but get boosted by √3 ---> 208/360/416. Although not standard, those voltages can still be used to provide demonstrations for load balancing exercises, etc.

it's perfect coincidence and I did laugh a lot

That's very curious indeed. I'm not an engineer, unfortunately, so I'm not sure why your LRC meter showed such a low inductance. But if the transformer was open circuit, and the meter was applied to the high side, the value of L should have been much much higher.... as you indicated by the empirical data. Maybe make sure the meter isn't being "fooled" by something trivial like parasitic capacitance? Not sure if that would affect the accuracy of the measurement... but it's worth investigating.

The toroid is large, 66" dia. That forces the gradient of the E field to point outward from the top load, rather than downward. As a result, the arcs first move away from the coil before bending downwards to strike the Earth. At least, that's my theory. 🙂 I've never had a strike to the secondary yet.... so it's a good bet.

I think they're Cat G16CM34, nat gas units. The engines aren't really in my wheelhouse though. The generators are 6 MW each, synchronous 12.47kv. They are owned and operated by the City of Geneva, IL (my employer). The facility is rated at 30 MW. It shaves peak and also generates for profit.

@@MegavoltHomeschool 10 or 12 pole.? That's really big for a reciprocating engine generator. Love your videos BTW

@joecummings1260 10 pole, 720 rpm. Engines are 16 cylinders. They were designed for cruise ships, primal movers. They've been converted to run nat gas.

I built the bank using small, dry-core, multi tap transformers. They are set inside the tanks and being driven with 120/208. They will provide 120/240/208 (depending on how they are wired). From my limited understanding of ferroresonance, the condition needs an LC series circuit to be established, with respect to neutral/ground. Because of this, it is very difficult to create a ferroresonant condition by wiring the high sides of the pigs in wye. Wye creates a low impedance path between the transformer inductance and ground, rather than another phase. This neutral/ground relationship is in parallel to the cable capacitance. So the inductive current is not required to flow through cable capacitance to get back to the source. By wiring the high sides in delta, however, the current has the option to do just that. However, if the secondaries were wired delta, like you mentioned, then it might be possible to create a ferroresonant effect with backfeed, when the primaries are isolated. Would be a good experiment. 🙂

Ahh! Gotcha. I forgot to mention we typically float the neutral in wye/delta so as not to create an Open Delta situation if we lost a power leg. So, it would have to be an ungrounded wye primary to create that situation. I’ll be looking at finding those capacitors and hope to replicate what you did. Awesome stuff!

@stephenlock6542 yes, you have a point! If the neutral is isolated (H0) then there could conceivably be a resonant circuit created through the primary coils of the transformer and the cable capacitance. Hadn't looked at it that way before. 👍

Yessir! Thanks. Isolation transformers save lives lol ☠☠👽😊

Always honored by your words. Thanks.

I'll keep the trans energized. :-) Get better my friend. We miss you. ♥

@@MegavoltHomeschool thanks mate and the feeling is mutual ❤👍

Thank you. The coil runs synchronous at 120bps. Slow break rates seem to cause lazy streamers (long lived ground strikes). The reasons for this, however, are not yet fully understood. The charging circuit relies on resonance to boost voltage. High side off the transformers is 14.4kv, 60Hz. But because the caps are resonating with the inductors, they (caps) are charged to ~30kv in one half cycle, 8.3ms. The circuit is inductive, but only slightly. XL = 10,800Ω. XC = 9500Ω. So the tank is fairly close to unity already (series resistance is <25Ω). I do not use PF correction. Adding parallel capacitance to the inductors would cancel inductive reactance and this would, in turn, lead to a loss of thru current into the tank caps. The coil is, however, slightly overcoupled at the moment. But that only presents a problem when running wide open.

Appreciate the support. Thanks 👍

I've not thought to associate "potential" as a separate entity from charge density. Drift velocity x charge density = current. I'm not sure if that is what you are implying. Capacitive voltage rise, if I understand it correctly, is largely dependent upon charge density (as well as permittivity). Yes, there is a drift velocity (current) needed to produce charge density, but the diff eq's demand that current always be 90* leading the charge density "potential". Those two can not be in phase with one another. It gets very convoluted when trying to explain without a white board handy. In fact, reading what I just wrote, I'm not sure I even understand myself! 😅

@Megavolt Homeschool I assumed that you have read more of Tesla's work that I have - Do you use any of Tesla's writings for consideration ? - Tesla is not my reference but he gave some clues - What I was trying to ask you had more to do with the anatomy of the electrical flow, a physical description of what was happening around and in the wire, so I stay away from the words like charge or capacitance, etc., because those are provisional terms that don't describe physically what's happening - I saw that you had built some Tesla coils so I thought you might have some insight into the subject

@@mikehoman7351 I am always quick to point out, my fascination with electricity (and physics) goes far beyond my ability to understand it. You'll be surprised to know, I have read none of anything Tesla wrote. Yes, he was a genius/savant. The unit of magnetic flux density is even named after him. But, he was an engineer at heart, not a physicists or a mathematician. I've studied Maxwell, Faraday, Ampere, Gauss, and others to learn the laws/theories of electromagnetism. And although conceptualization is important, mathematics is crucial. If a complete understanding is to be achieved, then there must be a mathematical framework employed to support it.

@@MegavoltHomeschool I agree with you - The only issue I have wherein mathematics is employed, is it supports means of prediction, without actually knowing how something works quite a lot of the time, throughout physics and especially in quantum mechanics - I believe also this will not always be the case as the anatomy of particles and the actual true nature of energy are understood, then mathematics will have even more power

I agree 🙂