Interested to Buy Any Domain ? << Click Here >> for more details...
What is OLTC in a transformer, specify its fuction.
- 35 Answers
- 143389 Views
- Bhel, Isgec, L&T, I also Faced
- E-Mail Answers
Answer Posted / jitendra pawar
Onload Tap Changer (OLTC) is used with higher capacity
transformers where HT side voltage variation is frequent
and a nearly constant LT is required. OLTC is fitted with
the transformer itself. Multiple tappings from HV windings
are brought to the OLTC chamber and conacted to fixed
contacts. Moving contacts rotates with the help of rotating
mechanism having a spindle. This spindle can be rotated
manually as well as electrically with a motor. Motor is
connected in such a way that it can rotate in both the
directions so as to rotate the OLTC contacts in clockwise
and anticlock-wise direction. Two push buttons are fitted
on the LCP (local control panel) to rotate the motor and
hence the OLTC contacts in clockwise and anti-clockwise
direction. This movement of contacts thus controls the
output LV voltage of the transformer. So rotating of OLTC
contacts with spindle or push buttons in this way is a
manuall process. In case this process of rotating the OLTC
contacts and hence controlling the LV side voltage is to be
done automatically then a RTCC (Remote Tap Changer
Controller) is installed with the transformer HT Panel. The
RTCC sends signals to LCP and LCP in turn rotates the motor
as per the signals received from the the RTCC
| Is This Answer Correct ? | 94 Yes | 5 No |
Post New Answer View All Answers
what is counter poise conductors
WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS
What are the types of piano switches?
size of condotory fron voltage level
can any one know is sbi interview based on merit or based on roll number
If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.
How you will determine the volume of oil in a particular Distribution transformer.
What is real time power factor control panel(RTPFC)?
Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC
What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)
11 kg trivevter meter has rating of -/5amps. And pt ratio11000/110v and is connected with 11kv ct/pt unit of cr ratio 75/5amps. And pt ratio of 11000/110v while checking accuracy of meter with HT Accuchek meter what value of PT ratio and CT ratio to be filled in Accuchek meter
How to measure current and voltage in an ELV circuit
What is BusBar integrity test and how it is conducted?
what is the write prosidure of stringing of 8meter pcc pole.
How to calculate impedance volt in Transformer?
