What is OLTC in a transformer, specify its fuction.
- 35 Answers
- 133682 Views
- Bhel, Isgec, L&T, I also Faced
- E-Mail Answers
Answer Posted / shreenidhi
OLTC(on load tap changer)is a mechanism used in transformer
for changing the tapping position on primary side(HV)of
transformer.For any installation mostly in industrial areas
and rural areas the voltage on HV of the transformer will
not be 11kv(taking an example of 11kv System)and
correspondingly the output will not be 433v.To maintain a
constant 11kv/433v the tap changer on the Primary/HV side
of the transformer is either raised or lowered to maintain
constant 11kv input to transformer.Normally it is raised or
lowered in steps of 2.5% of normal KV value.
| Is This Answer Correct ? | 12 Yes | 7 No |
Post New Answer View All Answers
Give details on how you intend to handle a challenging position you are posted to manage unexpectedly as a company staff?
WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
What are the advantages of thermal power plant?
when will be the iocl interview results ifaced the interview on september 8 th
How we calculate DC inducation moter Amp? Sir pls give me formula......
IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.
How can we connect additional batteries to three phase ups? What are parameters we have to check when connecting?
from which formula we select a capacitor rating?
While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?
What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.
What happened ,If 3 phase clearance not maintained in 33KV Line,11KV LIne etc?
What are the functions of temperature scanner in power transformer?
why lightning arrestor are made in two stack of insulator but why not cvt
how to calculate the change over time for star delta starter for different KW motor?
