Answer / bala

OLTC means On Load Tap Changer and It is coming with transformer. If it is fitted, no need to worry about the incoming voltage whether it is high or low as the transformer will automatically change its tap position to deliver the constant output voltage.This is possible only when we interface the AVR to it.

RTCC means Remote Tap Changer Control Panel. We can change the transformer tap position from remote area. This is possible only when the interfacing between OLTC and RTCC has been done.

Answer / prakash

1.OLTC stands for On Load or Off load tap changer. It is generally used in power jobs.In case
of Off load tap changer we must have shut down the transformer to change the tap
position but in case of On load tap changer we does not need to shut down the
transformer we change the tap position in running status of a transformer .
2.In case of on load tap changer a resistance is used to hold the current when we change
the tap position in running status of transformer for a short duration of time when tap is
change from one position to another if we not use the resistance the current is flow
back & coil is burnt.


RTCC stands for Remote tap changer controller .It consists of various switch i.e voltage up & down button ,tap changer button etc . It is connected to the transformer via OLTC and generally kept inside the substation for controlling the transformer and also all the important alarms are fit in it .so, we carefully look after the transformer by the help of it at a distance from the transformer

WHAT is the no of starts/hr for 3.3 KV, 300 KW motor. Motor is vertical flange type.

1 Answers   DAE, Siemens,

---

Why should we hire you over the others waiting to be interview?

0 Answers  

---

Why the frequency of a system is changed if the load changes?

5 Answers  

---

why is using sensor?what is differece between photoelectric and proxmitty?

0 Answers  

---

How to convert farad to kvar. both are the unit of capacitor.

5 Answers   College School Exams Tests, UltraTech, Vikram Ispat Industries,

---

What will be MF if we have CT ratio is 130 of 3 nos?

1 Answers  

---

Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

0 Answers   DAE,

---

can u light up bulb with out useing neutral

12 Answers  

---

What is the following which is printed on electrical appratuses like AC21 ,AC 23 , etc ?

1 Answers  

---

How much current can a 3-1/2 core 100 mm wire carry?

3 Answers   Epitome, Focus, Focus Energy,

---

what is the difference between series and shunt compensation using facts in a transmission line

8 Answers   College School Exams Tests, Genco,

---

Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.

0 Answers   SK Engineering,

---