Answer / raja sekhar

b'coz u can know that the high voltage winding has low
current and when switch is tapped there is less possibility
of geetin arc

Answer / jagadeesh

i think to reduce the leakage flux

Answer / anu

Tap changing at HT side is more efficient

When we change the tap position of 10MVA transformer it suddenly tripped with Out of step indication and also with Static differential relay indication, Transformer Bucholz relay indn and Low oil level indication. Before 1 week the same problem occured by changing the tap position. but at that time only oltc bucholz relay activated. After testing the TxR Relay team & PET team cant find any solid reason. The values are ok also. So plz answer wat's the reason for this incident? anybody plz help.

3 Answers  

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I want to put this query to SENIOR & EXPERIENCED ELECTRICAL ENGINEERS. 1)I want to know about the control circuit diagrams for control panels. I found it difficult to understand. Is there ant booklet through which we can learn the circuit diagrams? 2)I want to learn about conduiting, laying cables, preparing cable schedules and various techniques which is the part of building infrastucture(construction field). I don't have any experience in this area. I have experience in control panels only. that's why i am not getting any opening in building infrastucture (construction field).Can I get the job in this field as Trainee Engineer? How to enter this field? I need job in PUNE

0 Answers  

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1kva = kw ?

6 Answers  

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how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?

1 Answers   ONGC,

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Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

0 Answers  

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A motor works on 30kw.it is working on 440volts.How much amper will be Required?

7 Answers  

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Can Dy11 and Dy1 vector group transformers be paralleled?

1 Answers  

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What is metering cubical? What is the use?

2 Answers   HSL,

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how to check avr of dg set of 125kva

0 Answers  

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what is the relation b/w KW and KWH? plz explain with example.

6 Answers   FAG,

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what is the value of the earth resistance in mositure place

3 Answers   HCL,

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How we calculate the size of ht cable for any transformer

0 Answers   WalMart,

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