Why we are mostly using a single 3-phase transformer
instead of three 1-phase transformers?

Answer Posted / serwox

Reasons are as follows:
Efficiency of one 3 phase transformer is slightly higher
than the overall efficiency of three single phase transformers.

Space and weight is greater for the 3 single phase tx than 1
single 3 phase tx hence cheaper to transport a 3 phase tx.

Is This Answer Correct ?    16 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

1279


Which cable is use for rtcc control panel

1334


What is dielectric loss?

645


1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

4221


A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

2120






In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1511


what is earth pit , how we can measured it, what earth rods reference

2065


In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

1996


Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..

1675


Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

1682


how to identify conection leads of an unknown electric motor

1552


mccb service sittings be done?

1363


What are the temperature elements?

714


What are the types of piano switches?

1436


why -48 volts dc used in telecommucation

1978