What is OLTC in a transformer, specify its fuction.
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
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
what is the ms flat constant for calculating earth mat design calculation?
what is meant by poly phase induction motor ? how its operating by single phase or three phase?
How to distinguish whether MCB is DC or AC looking at it physically
A cotter joint is generally used to transmit
what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com
when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?
how to find the torque of the single phase synchronous motor by doing an experiment
sir iam from electrical and electronics branch ,can i appear for the hpcl offline requirtment? if yes please mail me on vikram_raju25@yahoo.co.in
what does mean of RCT and STR in diffrential CT?
What are the advantages of hydropower?
How the over load setting for HT Motors calculated-provided in Numerical Relay
What is the actual calculation for transformer short circuit test?.
Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?