Answer / vedpraksh uppadhaya

power tranformer are used at substation & they have maximam
efficency at full load .
power transformers have high ratting like wise 5 mva, 8
mva,...
these are used in 66kv , 33kv.
while the distribution have less efficency at full load as
compair to power transformer as well as their is no need of
controlling equipment like as bucollz relay. these are used
for distribution purpose example.500kkva...

Answer / rsundareee

The major difference B/W Ptr and DTr ,
* The power trans is step down and step up the High voltage
(HV-3Phase to 3Phase system)-for substation purpose
* The power trans have rating up to 500mVA(up to 400kV)
* The Distribution trans is step down voltage(HV to LV
Side -3Phase to 3Phase 4 wire system)-for domestic consumer
* The power trans have rating up to 50mVA(33,22,11kV to
0.415kV

Answer / amitsinh atalia

Power transformers have ratings above 500 kva and have
maximum efficiency at full load and are designed for higher
leakage reactance.
while distribution tranformers have ratings below 500 kva
and are designed for max. efiiciency at a load much below
than the full load, and should have lower leakage reactance.

Answer / neeraj pandey

I agreed with Mr. Amitsinh Atalia, but a correction is needed.
Generally Power transformers have rating above 5000KVA(not
500 KVA).
and Distribution Transsformers having rating Below 5000 KVA.

Rest is same.

Answer / shubham

apart from above written differences. the major difference
b/w poer and distribution transformer is that power Xmer is
Step up Xmer and distribution Xmer is step down Xmer

how to set the transformer differential relay

1 Answers   Divis Laboratories,

---

at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

0 Answers   iGas,

---

High Voltage out door substation-annual maintenance, things to be considered

1 Answers  

---

Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?

2 Answers  

---

When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number

0 Answers   TATA,

---

---

I want to wire sizing calculator which website is available it

1 Answers  

---

Are generator action and motor action relates to a particular machine only?

2 Answers  

---

What is the difference between SSR drive& AC drive?

1 Answers   ITC Infotech,

---

what is differance bw ELCB and MCB. ?

3 Answers  

---

what is transformer

63 Answers   ABB, Advance Power Controls, CERC, Electrical, Electrical Supervisor Competency Certificate, ETA, IBM, Jindal,

---

inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 Answers  

---

What is percent age of scrap of wires as per IE Rule Clause No in wiring for House and Industrial wiring ?

3 Answers  

---