Hi, I wanted to know the following:Input Supply: 56KVA @ 220-240V

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Discussion Overview

The discussion revolves around the feasibility of using a transformer to step up power from a municipal supply of 56KVA at 220-240V to meet a requirement of 1000Amps at the same voltage. Participants explore the principles of transformer operation and the implications of power conservation.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant questions the need for a transformer if both input and output are at 230 volts, noting that transformers cannot increase voltage and amperage simultaneously.
  • Another participant emphasizes that a transformer can only raise voltage and lower amperage or vice versa, maintaining the same power level.
  • Some participants express uncertainty about the initial question and request more detailed information about the required transformer.
  • It is noted that the available power of 56KVA translates to approximately 240 Amps at 230V, which is insufficient for the stated requirement of 1000Amps.
  • Participants highlight the conservation of energy principle, indicating that energy cannot be multiplied and that the power available is less than what is required.
  • Mathematical calculations are presented to illustrate the relationship between KVA, voltage, and amperage, reinforcing the constraints of transformer operation.

Areas of Agreement / Disagreement

Participants generally agree on the principles of transformer operation and the limitations regarding power conservation. However, there is some disagreement about the clarity of the initial question and the specifics of the required transformer.

Contextual Notes

Participants note the need for more detailed specifications regarding the transformer to further the discussion. There is an acknowledgment of potential misunderstandings in the initial post, which may affect the clarity of the discussion.

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Hi, I wanted to know the following:

Input Supply: 56KVA @ 220-240V (Municipal Supply)

Required 1000Amps @ 220-240V

Can a Transformer be bought to step up and supply the required power.
 
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Really odd question. I don't get it.

Is 56KVA the transformer you want? If you are talking 230 volts in...why do you need a transformer to get 230 volts out?

Please state your question more clearly. Remember, power in = power out in a transformer. A transformer can only raise voltage and lower amps...or lower voltage and raise amps.

However, if you are talking about taking a large incoming voltage and lowering it to 230 volts at 1,000 amps...then yes, a 250 KVA transformer could work...assuming you are talking single phase.
 
Last edited:


psparky said:
[...] A transformer can only raise voltage and lower amps...or lower voltage and raise amps. [...]

I really wouldn't be so sure about that ;)

To the thread starter: provide us more detailed data of needed transformer - then we can talk. In general, You can always order a tailor-made transformer.
 


adreams said:
Hi, I wanted to know the following:

Input Supply: 56KVA @ 220-240V (Municipal Supply)

Required 1000Amps @ 220-240V

Can a Transformer be bought to step up and supply the required power.
Psparky is right: that's not what transformers do. Voltage goes up and amperage down or amperage down and voltage up, while keeping power the same. Your power available is 56 kVa (which is 240 Amps at 230V) and a transformer will not change that.
 


gerbi said:
I really wouldn't be so sure about that ;)

To the thread starter: provide us more detailed data of needed transformer - then we can talk. In general, You can always order a tailor-made transformer.
A transformer has a voltage in and out and a rated kVa (from which you can find amperage in and out). We got all three of those pieces of information, plus a kVa available which is less than the kVa required. This is a conservation of energy fail.
 


russ_watters said:
A transformer has a voltage in and out and a rated kVa (from which you can find amperage in and out). We got all three of those pieces of information, plus a kVa available which is less than the kVa required. This is a conservation of energy fail.

That's right, haven't read his post careful enought. Energy can't be multiplied. I thought there was a mistake in spec..
 


Start with the math 56KVA = 56,000 Volt Amps ... 56,0000 KVA / 220 V = 254 A - The "KVA" defines the ratio of the V and A - you can not change one without affecting the other.
 

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