Interested to Buy Any Domain ? << Click Here >> for more details...
why nearly all the voltage levels are in the multiples of 11
like 3.3 ,6.6 ,33 ,11 kv.....
- 8 Answers
- 15072 Views
- Suzlon, I also Faced
- E-Mail Answers
Answer Posted / k.sahadevan nair
In India and other commonwealth countries, in the initial stage maximum generation voltage was 11 KV considering maximum available insulation rating. In order to step up this voltage,secondary of transformers should be 33 KV, 66 KV, 110 KV ,132 KV, 220 KV etc. So HT voltage of all step up/down transformers were fixed at multiples of 11. This has become a practice. This has nothing to do with form factor 1.11
When generation voltage is improved due to advancement of technology it has become difficult to change rating of all existing transformers. Naturally rating of transmission voltage of multiples of 11 continued and still going on. This is not applicable to EHT as this is a recent development and limited to certain countries only.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
In a synchronous motor. if start is running at high speed. What will be the starting torque : Higher Lower Zero
1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is
how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc
what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB
When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt
what is the difference between changer, converter and transformer?
what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors
Work done in a free expansion process is
why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?
what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..
How we can come to know the substation range,without go through any name plate ?
What are the different methodes for calculating the short circuit Current?
What is the basic rule for block diagram reduction technique?
what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
