Answer / thowsif_emerson_csm team

A Vector group is the International Electrotechnical
Commission (IEC) method of categorizing the primary and
secondary winding configurations of three-phase
transformers. Within a polyphase system power transformer
it indicates the windings configurations and the difference
in phase angle between them.[1]

The phase windings of a polyphase transformer can be
connected together internally in different configurations,
depending on what characteristics are needed from the
transformer. For example, in a three-phase power system, it
may be necessary to connect a three-wire system to a four-
wire system, or vice versa. Because of this, transformers
are manufactured with a variety of winding configurations
to meet these requirements.

For More Information Log On to:-

http://en.wikipedia.org/wiki/Vector_group

Answer / ashwani malhotra

(2u-2n)+(2n-1W) = (1U-1W)
( 2v-1W ) = (2w-1W)
( 1V-2v ) < (1V-2w)
( 1U-2v ) = (1U - 2w)

In DYn11 connect 1U & 2u .and apply the 3 phase 415 v ac to
HV side. Check for the above condition .if its ok then
group is DYN11.

how to calculate the size of cable for 100 kva load,?can somebody tell me with a formula

7 Answers   Havells,

---

Which type of starter to used which type o motor

0 Answers   Crew pvt ltd,

---

why and how fault current flows through ground?

1 Answers  

---

Why the CT Secondary is rated as 5A generally?

2 Answers  

---

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 Answers  

---

What is the types of HT motor testing

1 Answers   ABB,

---

Why  we are always  only used 11 kv.  , 22 kv ,33kv      in transmission line? Why not use 25,  55 ,65 kv ?

3 Answers   Khidmah LLC, Precision Camshafts Limited,

---

Why transformer is not rotating?

20 Answers   BARC, Nerolac,

---

where can i get vijaya electricals limited in hyderabad interview auestions can u give me the website address plz

0 Answers  

---

If a 3 phase transformer is a 500 kva using the formulae 500kva= 500000/433 x 1.732 = 666.71amps does this mean that each phase on the secondary side is 666.71

3 Answers   Saffron,

---

Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

0 Answers   HPCL,

---

why to need a electrical earthing?

2 Answers  

---