Interested to Buy Any Domain ? << Click Here >> for more details...
Why we Specify Transformer rating 433 V Instead of 415V
?
- 8 Answers
- 38634 Views
- ABB, ERA, Uddans, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / n. ramesh
Power distribution network is supposed to have a voltage
drop of around 4%. As the utility provider has to assure a
three phase voltage of 415 V at consumer's metering point,
the secondary phase to phase voltage of the distribution
transformer is specifed at 4% higher than standard three
phase-phase to voltage of 415 V, which works out to 433 V.
| Is This Answer Correct ? | 46 Yes | 6 No |
Appliances rated voltage is 415V. If Trasformer is specied
at 415V, it will further drop down at receving end and
appliances may not work
To compensate Voltage drop at receiving end
| Is This Answer Correct ? | 42 Yes | 12 No |
Answer / ash
433V is the no load voltage. that is when the transformer
is supplied at its HT side but without any load connected
to the LV side.
| Is This Answer Correct ? | 18 Yes | 6 No |
Answer / sagar surve
Appliances rated voltage is 415V. If Trasformer is specied
at 415V, it will further drop down at receving end and
appliances may not work
| Is This Answer Correct ? | 15 Yes | 9 No |
Answer / gopalen sv
When the transformer is installed near to the LV distribution and no significant voltage drop occurs because of short length of cables then the problem of high voltage like 250 volts in single phase results in many fused bulbs. Motors rated at 400 V will experience 430 plus volts. Before deciding secondary voltage such conditions should be taken into account.
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / andy d
It is to do with the transformer % impedance, As mentioned open circuit LV side of a transformer would measure 433V, Fully loaded the transformer volt drop is equal to the % impedance. A typical 1MVA DY11 transformer would be around 5% impedance at full load, i.e. the secondary voltage reduces voltage to 411V. This is a lower value then 415V however it is not advisable to run transformers at 100% if you want a long life.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / percy
433 IS LILNE TO LINE VALUE OF 250
415 IS NOT DIVISIBLE BY 1.732
| Is This Answer Correct ? | 3 Yes | 52 No |
what would happen nif we increase or decrease the capacitor of a flood light.
Hi i want to know that in generation station what we are generate either voltage or current
why the field winding of synchronous machine is excited by dc source
What is the Impedance, inductive reactance calculations
What is the purpose of Vector Group in transformer?
1 Answers Andritz, ThyssenKrupp,
How to decide cable tray size?
What is the actual meaning between the energy conservation and energy saving ?
What are the two basic types of transformers?
One Township having 850 house and each house load is 2.2KW single phase & 5HP 3 Phase motors of 10 Nos .Who can calculate 11 KV transformer capacity .dilip_bhasker@yahoo.co.in
List examples of voltage source?
is there any concept of armature reaction in Induction motor?
Write the current equation in series RLC circuits.
0 Answers Agilent, Integreon, ZS Associates,
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
