Answer / dinesh kumar

Assumed the transformer vector group is DYn11;
1.1U1V1W-which is primary -Delta Connection
2.2U2V2W- Which is secondary-Star connection
3.join 1U& 2U terminals
4.Supply 1U-1V-1W 440v Measured
a.1U-1V
b.1V-1w
c.1W-1U
d.1W-2W
e.1V-2W
f.1V-2V
g.1W-2V
h.1U-2N
i.1V-2N
TO CHECK
1.1V-2W=1V-2V
2.1W-2V>1W-2W
3.1U-1V=1V-2N+1U-2N
From above check(1,2,3) the vector group of transformer is
verified

Answer / e.saravanan

Assumed the transformer vector group is DYn11;
1.1U1V1W-which is primary -Delta Connection
2.2U2V2W2N- Which is secondary-Star connection
3.By connecting terminals 1U& 2U
4.Then three phase Supply is given to 1U-1V-1W
5.By measuring the terminal given below
We get
a.1U-1V
b.1V-1w
c.1W-1U
d.1W-2W
e.1V-2W
f.1V-2V
g.1W-2V
h.1U-2N
i.1V-2N
THE BELOW GIVEN CONDITION IS SATISFIED THEN DYn11 IS
CONFIRMED
1.1V-2W=1V-2V
2.1W-2V>1W-2W
3.1U-1V=1V-2N+1U-2N

Answer / elangovan

The above method is correct

Answer / sajeesh

wht abt YN d11 transformer...??????

Answer / vinod

Vector group is punched on the name plate based on the user
requirement by the manufacture. Aim of vector group test is
at site is to check if their is any damage in the windings
during transportation and erection.
3 -phase AC supply is given on HV side. R-Phase HV and r-
phase LV shorted for all vector group of transformer

Then to qualify the test following conditions are to be
satisfied after measurement of voltages.

nR+nY=RY, By>> Bb and Yb=Yy.

Answer / srinivas

can anyone say me hoe to draw vector group and what is the
use of different vector group and its application plz

Answer / adi

Procedure given by Mr. dinesh kumar & Mr. E.saravanan is
correct but is there any explanation for this three
conditions.
1.1V-2W=1V-2V
2.1W-2V>1W-2W
3.1U-1V=1V-2N+1U-2N

Answer / tum

1U-1V=[1U-2N]-[1V-2N]

Answer / prasad talada

1.1U1V1W-which is primary -Delta Connection
2.2U2V2W- Which is secondary-Star connection
3.join 1U& 2U terminals
4.Supply 1U-1V-1W 440v Measured
a.1U-1V
b.1V-1w
c.1W-1U
d.1W-2W
e.1V-2W
f.1V-2V
g.1W-2V
h.1U-2N
i.1V-2N
TO CHECK
1.1V-2W=1V-2V
2.1W-2V>1W-2W
3.1U-1V=1V-2N+1U-2N
From above check(1,2) the vector group of transformer is
verified

Answer / vinay kumar

can anybody tell hw u r writing this is the vector group
calculation for this one.....
what happens if the voltages r not satisfied for the
specified vector group and if so what to do.......

Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctance property?

2 Answers  

What is the function of Buchholz relay in transformer ?

1 Answers  

wht is embedded systems? what is new inthis field?

0 Answers  

If we give the 440 V supply at secondary winding of the transformer then what will affect at primary winding???????

6 Answers  

WhY PF low at Time of PT Missing in HT Meter

2 Answers   HCL,

tell me about xlpe cable?

1 Answers   IOCL,

how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 Answers  

WHAT MEANT BY SEVICE FOCTOR?

2 Answers  

HOW TO SET THE EARTH FAULT SETTINGS IN ACB????????????

0 Answers   General Electric,

How Arc Extinguish in Minimum oil circuit breaker and What is the function of Radial and axial vents of turbulator in Minimum oil circuit Breaker Where these vents are exists.

1 Answers  

Why magnetic flux produces an induced current?? what is the detailed procedure ?? ans plz

1 Answers  

What is difference between incomer & outgoing type Vaccum Circuit Breaker?

2 Answers   VBG,