What is formula of capacitor for 1-phase power connection.how to improve PF. Suppose I want to connect capacitor in refrigerator to reduce power consumptions.
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how to reverse the direction of universal motor?
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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?