DESIGN A TRANSFORMER

Your condition is vague.

lots of kinds of transforemer, which one do yuou prefer?

differnet transformer has differnet formula to design. speak clearly.

hi all engineers

i have just started my career as a transformer designer and one formula i am not getting from any where that is

if i have been given losses and other information about transformer how would i calculate the cooling area of a transformer.once i know the cooling area i an adjust it in tank and tubes...either i can enlarge my tank or i will decrease the tank and would put more tubes

i am sure that there is formula for this calculation...can any engineer guide me in this regard ???

You mean working out the rating of Transformer with framing of Technical specifications OR you are looking for product design for Transformer ? Be specific

Give Details for Primary / secondary Voltage , Power supply system HZ., Fault level of primary voltage grid

Give Detail of load to be connected / load in operation / efficiency of connected drives/ p.f of connected load/ load factor and diversity factors of various load in operation

nascon

It would be of great assistance to readers and their responses if some details were added to this post. Transformers vary from a simple pair of turns brought close in free air to heavily-engineered units weighing hundreds of tonnes. Please be more specific, Guest!

Before designing a new transformer, firstly you should specify VA rating, input/output voltage. frequency, power factor, efficiency, ambient temperature, permissible temperature rise, fault level, cooling arrangements, tertiary voltage, location where the transformer is required to be installed, foundation design. cooling oil specfications, insulation requirement, etc etc.... So please determine these, design the transformer but be sure that your design is economically viable, in terms of cost of copper and Iron.

i think you are looking for sizing of transformer, if so then nascon having the answer in one of our previous discussion under transformer sizing.

Breifly the following steps may be adopted for designing a transformer.

1- Determine the VA rating for which you intend to design the transformer.

2- Find out the Input/output Voltage.

3- Determine and calculate the Turn Ratio

4- Calculate the Primary and Secondary Current.

5- Select the conductor both for primary as well for the Secondary side.

6- Based on the number of turns, system frequency, permeability of the core material,

type of core (shell/core Type), current , voltage and power factor determine

the Flux Density

7- Calculate the temperature rise due to circulating currents.

8- Choose heat dissipation method,through fins, ONAN, ONAF.

9- Select the type of insulation

10-Determine the efficiency of designed transformer.

11-Calculate the weight of Iron Core and Copper Winding

12-Determine the Cost/Benefit

13-Repeat the process till u get the most economical transformer.

Breifly the following steps may be adopted for designing a transformer.

1- Determine the VA rating for which you intend to design the transformer.

2- Find out the Input/output Voltage.

3- Determine and calculate the Turn Ratio

4- Calculate the Primary and Secondary Current.

5- Select the conductor both for primary as well for the Secondary side.

6- Based on the number of turns, system frequency, permeability of the core material,

type of core (shell/core Type), current , voltage and power factor determine

the Flux Density

7- Calculate the temperature rise due to circulating currents.

8- Choose heat dissipation method,through fins, ONAN, ONAF.

9- Select the type of insulation

10-Determine the efficiency of designed transformer.

11-Calculate the weight of Iron Core and Copper Winding

12-Determine the Cost/Benefit

13-Repeat the process till u get the most economical transformer.

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inhussain