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Engineering
Electrical Engineering
Find TX turns ratio and 'class' questions?
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[QUOTE="tim9000, post: 5487042, member: 480143"] Sorry it's taken me so long to get back here. Thanks for the replies. I'm trying to understand the meaning of 'class' of a TX specifically, among other things. Please See below. Okay, so no voltage across them except from inductive coupling. Could you please remind me, what's a 'shaded pole effect'? So say if one coil was loosely wound, and so had more leakage flux, what magnitude will that effect, what magnitude error are you talking about? Like power factor? Or the input and output voltages being out of phase? I would assume that having the input and output voltages being in phase would be pretty much in phase would be an important parameter of a TX? Is that what you mean by Phase Error? I was thinking of like a Wheatstone Bridge, is that what you'd have to use? I finally got a chance to go through my notes (which aren't very detailed) and I saw (exactly like your LHS drawing, Merlin) a scribbled drawing of something like this: [ATTACH=full]101425[/ATTACH] Now I'm not sure if it was an isolation TX or one with a turns ratio, but I think I was trying to find the ratio error of the turns ratio. Do you think this would tell you the ratio error of an isolation TX? (Or if you had a step-up VT with a turns ratio of 5 and you put 100V in, the voltmeter should read 400V? But in that case it would be easier to just measure input and output and divide them to calculate the ratio error? *as you said Merlin*) Thanks I guess a post script to this would be, so core and copper losses, what impact to they have on the 'class' or important parameters that you would look for in either a VT, isolation, or CT? [/QUOTE]
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Find TX turns ratio and 'class' questions?
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