Answer / ranjan,(wartsila)

i want to add 1 extra point with above answer,

In HTside current is lower than LT side,because of that
during tap change over arking will be less in HT side.

Answer / pasang, avit, chennai

Tappings of the transformer irrespective of either
Distribution or power transformers are on the HT side due
to the following reasons.

1. The HT windings have more No of turns than the LT
windings so that the flexibility of Stepping up and
stepping down is easier with more tappings.

2. The tap changing is easy and safe considering the
Voltage level and also the requisite voltage level either
step up/down can be acquired

Answer / kanaksinh

i agree above both answers good

Answer / animesh pal

1) In hv side current is low .so used switches ,circuit
breaker will be cheaper even though bushing is required.

2) in lv side if no of turn is reduced max flux density
will be increased [E constant].As we want flux density to be
at knee point,so flux density will be in saturation
region,iron loss increase,temp rise increase,efficiency
decrease.But for hv side max flux density will be
decreased.so loss will be less...

tan delta test of current transformer.

3 Answers   NTPC,

---

Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel

0 Answers   IOCL,

---

The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

1 Answers   GATE,

---

Which types of following motors are most efficient?

0 Answers  

---

What type of fittings and electrical accessories can be install in radiation area ?

0 Answers  

---

What phase difference between p and s winding of transformer

1 Answers   MAHINDRA,

---

what is the difference between contactors & relay.

2 Answers  

---

Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

0 Answers  

---

If two induction motors A and B are identical except that the air-gap motor 'A' is 50 % greater than that of motor 'B', then

2 Answers   Lanco,

---

How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?

4 Answers   Power Grid,

---

How to obtain B license from TNEB license board. What is eligibility?

11 Answers   Core, Reliance,

---

what is the meaning of Air condition "TON"

3 Answers  

---