Monday, April 11, 2011

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

How to troubleshoot a Kvar utility meter?

Posted: 11 Apr 2011 01:08 AM PDT

Dear Engineers:

I have a kvar meter...an analogue one...which is counting i beleive more Kvar than the real consumed one.
It is counting about 8400 Kvar A DAY!!!although a power factor controller panel is attached ...the power factor is about .94
the Kw meter is consuming about 6000 Kw a day
Please any1 would help to troubleshoot this measuring device?

Thank you

Transformer - Learn and Contribute

Posted: 10 Apr 2011 08:57 AM PDT

Hello CEans !
Placements are near the corner. So in this thread we can share our knowledge covering each Power machine , its performance charactertistics , its construction and the things whuch is beyond the books. The things which are practical and can be known only if we visit generating station or any substation.
Lets take up Transformers first.
1) Transformer is a static machine having efficiency near 95%.
2) It consists of laminated Core (generally CRGO- Cold rolled grained oriented) and copper
windings.
3) It can be classified as given below:
On the basis of Phases :
a) Single phase
b) Three phase
On the basis of Core :
a) Core type
b) Shell type
On the basis of utility
a) Power transformers
b) Distribution transformers.
c) Instrument transformers
at

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