Hi everyone
Could you help in desgin of 3 phase
Sequence change indicator(checker)?
Not by microcontroller

 

Have you tried Google search? There are many projects doing exactly that

 

Have you tried Google search? There are many projects doing exactly that

Like what?

 

For a phase reversal detector There is this one on line. https://bestengineeringprojects.com/phase-sequence-change-indicator/

 

Could you help in desgin of 3 phase
Sequence change indicator(checker)?

Those are readily available for purchase.
Why do you want to build one?

 

Those are readily available for purchase.
Why do you want to build one?

l want to take a fault sign from this circuit to arduino

 

Couldn't the Arduino do that job also?
I have no experience with Arduino, I use Microchip products, but I assume it has the similar processing power to do it?

 

Hi,

There is a very simple circuit from long ago that uses passive parts. I don't remember it so you'd have to find it on the web.

 

I want to take a fault sign from this circuit to arduino

 

I want to take a fault sign from this circuit to arduino

So contrary to your OP, you already have the detector, you just require the signal from it??

 

3 phase Sequence change indicator(checker)? Not by microcontroller

l want to take a fault sign from this circuit to arduino

As already suggested, if you are using an arduino (which incorporates a processor) all you need is an input from the three phases to three I/O lines and some fairly simple code to determine the sequence. The most important consideration when dealing with AC mains is safety!

For each phase I'd use a potential divider - two resistors connected between the live and neutral with the the tapped low voltage into an opto isolator (diode) for safety. But be careful to check the voltage rating of the resistor with the high voltage drop - it may be necessary to implement this total resistance with several resistors in series so the voltage drop is shared between them.

Then digitalRead() the opto isolator outputs (collector connected to Arduino 5V or 3.3V depending on type) from which you can work out the sequence. Probably a diode in parallel with the opto diode to catch the negative voltage, but not strictly necessary.

 

I Want to take sign from the out of transformer (X3)

 

By "sign" you mean the sine wave?
How is one phase indication show phase reversal?
.

 

By "sign" you mean the sine wave?
How is one phase indication show phase reversal?
.

This sine wave
I will rectified and transformed to +5voult to input of an arduino

 

This sine wave
I will rectified and transformed to +5voult to input of an arduino

Or to relay

 

A phase sequence detector requires to monitor all three phases.
The normal action of these units is to power OFF the incoming power in the case of any reversal of any two phases etc, sensed.

 

In normal action
The output sign is +5 voult after rectified
And in error action
the output sign is 0 voult

 

I can reverse polarity

 

Is this project for the protection of a 3-Phase-Motor or Machine ?
.
.
.

 

Hi,
watch this indicator built on 4013' :

http://www.seekic.com/circuit_diagr...phase_sequence_indicator_circuit_diagram.html

Take in mind, the indicator to be powered from a separate source, a wall wart power supply can be used. Use optocoupler PC817 in place of the D3