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Model: 254    

Solderable DIY project kit for Engineering & Diploma students

Product of choice for Engineering & Diploma students worldwide.

Do-It-Yourself Kit

Rs. 2,939

Rs. 2,352

Includes complete hardware with plain PCB and a pre-programmed controller for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. Thorough understanding from the Problem definition to Circuit Design to Programming, Testing, Troubleshooting and finally building a working hardware project.

Tool Kit


Rs. 350

Includes Digital Multimeter, Soldering Iron, Screw driver, Cutter, to be used with Do-It-Yourself Kit to build the project.

Loaded and Tested PCB


Rs. 1,099

Rs. 880

Pre-soldered and tested PCB. Choose this option only if you are short on time. Only works along with the Do-It-Yourself Kit. (Can be purchased later)

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The project is designed to check the sequence of the 3 phase supply. It is very important to know the phase sequence particularly for 3 phase motors. For example, if the 3 phase motor is used for pumping action, any phase reversal accidentally resulting in wrong sequence could force the motor run in the wrong direction. This could result in dry run of the motor to develop permanent fault.

In this project direct 3-phase AC supply 50Hz is fed through voltage drop arrangement duly stabilized by zennor diodes to a logic circuit comprising of NAND gates and OR gates to detect the proper sequence of RYB by series of pulses of fixed duration.

In the event of changing the sequence from RYB to say YBR, the combination of NAND and OR gates develops an output with a missing pulse during the fixed time duration. This pulse is used in triggering an input signal to a 8051 series microcontroller through a timer to drive LEDs placed in a circle. In proper sequence the LEDs run  clockwise having received no triggering.  

While the sequence is not there the triggering is  done which is indicated by LEDs running clockwise for some time and then anti clockwise for the next and so it continues. DC requirement of the circuit is powered from a step down transformer along with a bridge rectifier ,regulators and filter capacitor.

Further this project can be enhanced by providing a relay to circuit to cutoff the supply to the load.

Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Digital Phase Sequence Indicator.
Call/mail for Tech Support from 10 am - 7 pm.
Can be Customized for Arduino, Raspberry Pi, PIC
Phase Sequence Checker for Three Phase Supply
Hardware Requirements
  • Transformer
  • Diodes
  • Voltage Regulator
  • Capacitors
  • LED
  • Resistors
  • NAND Gate
  • OR Gate
  • 555 Timer
Software Requirements
  • Keil Compiler
  • Language: Embedded ā€˜Cā€™ or Assembly.
Q & A
Q:  What is phase sequence checker?
A:  It checks the order of phase R-Y-B
Q:  Why it is needed?
A:  It is needed to run motor in desired direction
Q:  Where is it applicable?
A:  It is applicable in industries for ensuring right direction of induction motor rotation.
Q:  What happens when any phase is out of sequence?
A:  It will cause the induction motor to rotate in reverse direction, and incase it connected to a pump, this will lead to reverse pumping.
Average Rating
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Showing 4 of 10 reviews Show All
Ranbir Singh Dadhiyala, Bilaspur on 27th May, 2017, 12:31 PM

He said he got to know about edgefx through google. And he said he has used the keyword Electronic project.
I have decided to buy project from edgefx because i like the presentation of kit.
I have decided to buy project from edgefx because i like the presentation of kit.
And the,customer support team has helped me in purchasing the project & too kit was delivered in time with right components.

Shridhar rawool, Goa on 6th June, 2016, 04:55 PM

I got to know about edgefx through google. I was searching my project title in google then i got to know about edgefx..
I have decided to buy project from edgefx because i found my project which is similar to edgefx project that is why i have purchased project from edgefx. I like the kit presentation.
the kit was delivered in time with right components.
i have a called to a person the number which is given in the website.
i want to give reference to my juniors.

akash tewari, roorkee on 26th November, 2015, 03:07 PM

I searched for the words like Phase Sequence Checker for Three Phase Supply and find in Edgefx in Google.
I found this project Title so decided to buy that project from Edgefx.
I purchase through online

Ravin Sanjay Chikhalikar, Panvel on 18th November, 2015, 10:58 AM

I come to know about Edgefx through Internet.
I decided to buy a project from Edgefx because by seeing the website it is really attractive and requirement of my project is available here.
I purchased through online.

Rating Breakdown (10 Reviews)

Tool kit cannot be purchased individually.


Edgefx Technologies Pvt. Ltd.,
Plot No. 105, 3rd Floor,
Liberty Plaza, Himayathnagar,
Hyderabad - 500029,
Telangana, India
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