Electric transformers

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mains history share | improve this question asked hours ago uhoh uhoh gold badge silver badges bronze badges \$\endgroup\$ \$egingroup\$ my point was larger transformers tend to be a bad thing which could explain the switch to higher frequencies. i think maybe i should have said "smaller transformers

generator. lower frequency was also preferred for long distance power transmission. finding all the areas that once used hz would take far more intensive research than this question deserves. my google searches came up with nothing, however i did find some information that may be relevant. in the 's electric...

https://electronics.stackexchange.com/questions/474126/how-low-have-mains-frequencies-gone-what-areas-once-used-30-hz-and-why

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expansion joints, fittings pressure regulators , steam traps heat exchangers, cooling towers chillers, condensers,cogeneration systems valves steel/aluminum/copper steel - flat/long/wire/pipe products aluminum pipes & fittings copper pipes & fittings other products... power distribution equipments transformers...

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