current transformer connection in proteus

[virk]

I want to measure AC current consumed by load(load is practical :e.g:fan) and this measured current is to be displayed on LCD through Arduino.Problem is that there is no current transformer in proteus to step down current to low level.
Are the transformer available in proteus can be used as current transformer? if yes.how???
or any other method to measure ac current consumed by load.
please help me.

 

[KlausST]

Hi,

I assume there are thousands of forum threads about AC current measurement.
Showing many different methods to do this.
...Shunt, CT, hall
... peak, RMS, averaged rectified...

Even in the box below "similar threads" show some proteus and current transformer topics.

Please read through them.

You are welcome to come back with specific questions

Klaus

 

[virk]

Re: current transformer function

sir please ,clear my some concept about current transformer.According to my knowledge
1)current transformer is step up transformer(increases voltage,and decrease current on secondary side)
2)Secondary turns are more than primay turns.
3)current transformer's input is current(which is to be measured) and output is voltage(which is proportional to primary current)
4)A resistor at secondary side is connected to sense current and we read voltage.

 

[KlausST]

Hi,

A simple search in the internet brings a lot of results.
All answering your questions.

You can do the search by yourself.

https://en.wikipedia.org/wiki/Current_transformer

https://www.electronics-tutorials.ws/transformer/current-transformer.html





**
The assumptions in 1, 2, 4 are usually correct.

3 is not correct. --> current is output. (refer to 4)

Klaus

 

[smijesh]

Start from your understanding
1)current transformer is step up transformer(increases voltage,and decrease current on secondary side)
No, Current transformer will work simple formula
Turn Ratio : N primary / N Secondary = I Secondary / I Primary
where N is the number of turns and I is the current
I secondary = (N primary / N Secondary)* ( I Primary )
V secondary = I secondary * R secondary
Where V is the voltage and R is the burden resistance
Normal CT having one turn primary and several turn secondary (Ratio 1:1000)
Different types of CT
1. Conventional toroid or split core CT(AC application )
2. Hall effect CT(AC/DC application )
3. Rogowski Coil(AC application )
4. Flux gate CT(AC/DC application )


2)Secondary turns are more than primay turns.
Yes

3)current transformer's input is current(which is to be measured) and output is voltage(which is proportional to primary current)
Yes, Due to internal resistance of the secondary winding and burden resistor the output current converted to voltage( V=IR)
4)A resistor at secondary side is connected to sense current and we read voltage.
Yes, as above

Hope it is helpful to you .