Answer / sai bhargav

Bus bars are designed on curent density. To caluclate the area of the bus bas frist know the current density....

Answer / mostafaghodrat

First, we calculate the load current
Second, consider the highest temperature and selection
coefficients associated to it. For example: 50C
Third, the rate of sea level and the corresponding
coefficients, for example. For: 2000 meters

Fourth, the relative humidity is considered, and find the
coefficients. For example: 25G / M3

Coefficients are included in the tables.

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what is megar testing

4 Answers   NASA,

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What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

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What are the advantages of vscf wind electrical system?

0 Answers  

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what is the difference in between short time and continuous rating?

1 Answers  

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fog produced due to?

2 Answers   MAHINDRA,

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hw to calculate flc of motor ? data are:3-phase,50Hz,30kw

6 Answers   BRG, Reliance,

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what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

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We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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1.wat is the advantage of induction motor? 2.wat is diffrence between 1-phase and 3-phase induction motor?

2 Answers  

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Why earthing transformer used in Distribution Sub-Station?

3 Answers  

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10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

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What is the accepted limit to increase the choosen transformer capacity over the load and why ?

2 Answers   Asec,

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