Why we use Y-Y connection in power transformer (8-10 MVA,
132 kV to 11 KV)and D-y in distribution transformer (2 MVA,
11 KV to 440 Volts)?

Answer Posted / mrudang

ok u r using any transformer , anywhere but
the important is what is ur need ?
if u want , in distribution u need 440v -phase to neutral
u r using star connection

u need 11kv hv , u use delta connection

the important is u r using neutral or not generally line
side transformer has delta connected

Is This Answer Correct ?    6 Yes 5 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why front mounted CT polarities are always towards breaker?

1518


What will be the current if the resistance total in a series circuit doubles?

691


Why squirrel cage motor can only use with low starting loads ?

1555


plz explain the auot-reclosing circuit in electrical engineeing

1910


What is the formula for selecting the cabels according to load? How to calculate what sq.mm cabel to be used?

989






size of condotory fron voltage level

1722


Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

1653


can we use CBCT in neutral of solidly grounded transformer? in place of three phases we can pass only one phase which decreases the size of CBCT?

1762


What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

1624


How to calculate energy stored in an inductance?

644


what may the reason for vector shift in a generator?

1391


HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3483


What is dynamo function in DG sets and draw block diagram?

1583


I am apply the AAI. So i want electrical sample question paper in technical with answer my id is vijayjobsmart@gmail.com

2200


differnce between single acting and double acting solenoid valves

1398