i have 28/32 MVA power transformer with 11/6.6 KC voltage
rating and 12%impedance.it have star connection at both
side.but it have another thied winding tertiary
winding.what is used of this winding.
pl tell me
- 7 Answers
- 8809 Views
- I also Faced
- E-Mail Answers
Answer Posted / jnanesh
In star connected trans. third hormonics is significant so
to reduce that effect it is used.In delta connected trans.
third hormonics circulate witin and there is no effect.
Also plz note that in some substation for feeding internal
power to substation or local area this additional winding
is used.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
why impedance relay is used for medium transmission line protection
Why a tesa lamp is glow between two phase?
Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv
CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com
what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).
What is Instantaneous Earth fault relay,how will work
LET ME NOW MORE ABOUT icu and ics for circuit breaker. how we calculate the rating of circuit breaker and i c u and ics values
Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing
What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer
WHAT IS DEAD END IN PROTECTION?
please send me privious exam's queation papers of section engineer(electrical).
What are the components of feedback control system?
What is Faraday's law
WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.
