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...

which type of winding is used for high voltage & low current?

1 Answers   GEB,

---

why when i start my diesel generator it takes 1 minute or less then stop, and i checked the oil sensor is ok and when the generator start i can get 220 voltage but it it is stop after 1 minute or less, how can i solve this problem?

1 Answers  

---

how to check avr of dg set of 125kva

0 Answers  

---

In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?

0 Answers  

---

what is meant by loss of field in a DC motor? how a universal motor works?

0 Answers  

---

what is basically a pulse transformer?

1 Answers  

---

why series motor cannot be started on no-load?

6 Answers  

---

What is dynamo?How it works and what is the function of dynamo in a DG.

0 Answers  

---

how to calculate the cable size for 500 kva transformer?

3 Answers  

---

If the neutral wire go pass through the core balance current transformer? If yes then why? and no then why?

2 Answers  

---

why heat produced at junction of two different conductor. what care should be taken to minimize it.

11 Answers   Birla, Maihar Cement,

---

How many loops can be provided in a circuit as per IS rules.?

1 Answers  

---