Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??

2 Answers   Bala Power Solutions,

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what will happen while giving 2 phase supply to 3 phase motor

5 Answers  

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What is defference between earthed and unearthed cable(HT)? Which is better for under ground cabling?

1 Answers  

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can we step up dc power using transformer?

15 Answers  

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what is the difference between electrical choke and electronic choke?

0 Answers  

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Basic motor transformer generator

0 Answers   eCentric Solutions,

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How many turns are there in primary winding? (In Transformer)

0 Answers   Philips,

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what is the principal of braker

4 Answers  

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What are the main advantages of bode plot?

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What do you mean by pf of a generator? Power factor purely depends on the load (wether inductive, reactive or unity) then what does the pf mentioned on the generator nameplate means?

3 Answers  

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how is the magnetic current test is different in delta-star and delta delta transformer.

0 Answers   Bhel,

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why motor rating in kw?

3 Answers  

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