Taboma
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Damn, over 50 years of my life spent in the wide world of electrical construction, not even including the years growing up the child of a past President of the International Electrical Inspectors Association and co-author of the NEC --- and I didn't know jack-squat about this whole rabbit hole of the Power Infrastructure for electric mining. I recall we have a RDP member employed in this business way down-under, but I know almost nothing of what his job entails.Check out this Caterpillar rail charging system for its electric prototype mine haul truck.
Caterpillar Touts Mining Technology Prior to MINExpo
New technology highlights connectivity and sustainability.www.constructionequipment.com
Started searching for and found a lot of pictures of various huge mining shovels and noticed something I'd never seen prior ------ high voltage (Well OK medium, depending on who yer chatting with ), black extension cords laying across the top of the dirt with obvious truck tracks across them. Those must be some bad-ass heavy duty cords.
While digging my way down the rabbit hole and still just scratching the surface of this new to me dimension, I did find an article I am fairly familiar with.
The often nasty side effect of VFD's resulting in premature and increased bearing wear. Did numerous small projects adding sine wave filters and other reactors to large VFD's, mostly ones involved in fluid pumping.
OK, new day and once again I'm reminded of even now, how many things around me I know very little about, but the learning, does keep life interesting.