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There are several electronic power meters which measure harmonics and power. Look into Fluke's type 43B power quality analyzer for $2199.75. It measures up to the 51st harmonic. Page 2015 in Newark Electronics catalog #121. www.newarkinone.com. Amprobe has the HA-2000 power analyzer for...

Hello daves22, The only advantage to running at a higher voltage and lower current is to the designer of the circuit. He can use a smaller-cheaper wire size. Because Europe uses a higher voltage, they are more concerned with having finger-safe terminals and must pay closer attention to...

To: busbar From: pragmatist It looks like you are recommending an isolated transformer to get around the different kinds of three phase systems; grounded and ungrounded, that might be found in the US. Is this correct?

Hello jbartos, My sources can be three phase 60 Hz.Y or delta at 208V, 240V, 480V, & 575V(Canada). I assume that I won't be able to use corner grounded 240V delta. My load will be a three phase Y connected refrigeration compressor operating at 440 V 60 Hz. (European design) The...

What problems can arise if I use a three phase autotransformer with a center tapped delta power source? Sinse each phase is 240 Volts, I am told the one tapped phase will cause my autotransformer or its' load to short out.