Answer / iamdon

Taps are provided on high voltage(HV) side in tap changing
transformers.

The reason behind this is that in a transformer, low
voltage windings are placed close to core so that
insulation requirement is less.The high voltage windings
are provided on outer layers.It is physcially easier to
putting taps and handling it from the windings which is
clearaly accessible.There are more number of turns on HV side
which makes it easier to obtain fine variation in voltages.
So the choice of HV windings for taps is justified.

Author:arbelectbit@yahoo.com

Answer / dilawar husain

The reasons given in above answers are correct. But there
is one more important reason and that is current. On Lv
side the current being more it needs heaviour contacts as
compared to HV side where the current is far less and
easier to handle. Also in case of ON LOAD Tap changers the
current is divirted to a bypass circuit for the duration
the tap is changing the pposition. This bypass circuit is
easier to design for lesser current on High voltage side.

Wat is da difference b/w neutral earthing and unearthed system?

2 Answers  

---

If the ceiling fan is on slow speed, does it consume less electricity?

2 Answers  

---

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

0 Answers  

---

What is hysteresis losses?

2 Answers   GMR,

---

can we run the home fan both clock and anticlockwise direction

1 Answers  

---

what are the reasons of low voltage during start the DG?

1 Answers   Godrej, Tata Power,

---

In HT overhead line why should provide top conducter which is not connected whith insulater..?

3 Answers   Essar,

---

What are the different types of testing in ht cables?

3 Answers  

---

how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

0 Answers   Marriott,

---

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

0 Answers  

---

FOR 3 PHASE DISTRIBUTION,WHY WE USE ONLY THE VOLTAGE LEVEL OF 440 VOLTS

1 Answers   AITM,

---

Why relay connected R phase and B phase.?

1 Answers  

---