Answer / sindhejs

We know that Power out=Torque*speed in rps.
Since in DOL condition there is no speed changing means no
change in power out,while in VFD there will be speed
changing using the frequency control,so the power out
changes from power input in VFD(Assuming that torque is
constant).

how to calculate the transformer losses.

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What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?

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what is the difference in using the 125% and the 250% factor of safety in calculating circuit breakers capacity for motors,which is more reliable to use the 125% or 250%??

1 Answers  

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Parts of machine and their discription in details with suitable photo

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What is slope...? Explain slope 1 and slope 2...?

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if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

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why the transformer ratings in kva or mva?

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Why is making current of CB always greater than CB breaking burrent?.

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typically in power distribution substation. 1- Any idea how would be the graph of capacitor bank consumption verses time through the day . 2- How is the switching ( on and off ) of the capacitor bank, per need?

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no EB power DG is not starting?

6 Answers  

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What is HVAC, PLS SEND DETAIL OF hvac.

6 Answers  

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