Three Phase Fault Analysis With Auto Reset On Temporary Fault And Permanent Trip Otherwise

Model: 165

Solderable DIY project kit for Engineering & Diploma students Worldwide

Do-It-Yourself Kit :

Includes complete hardware comprising of discrete components, modules, PCB, controller etc. and tested program code for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. (Tool kit-Multimeter, Soldering iron and program burner not included in the kit)

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The project is designed to develop an automatic tripping mechanism for the three phase supply system. The project output resets automatically after a brief interruption in the event temporary fault while it remains in tripped condition in case of permanent fault.
The electrical substation which supply the power to the consumers i.e. industries or domestic can have failures due to some faults which can be temporary or permanent. These faults lead to substantial damage to the power system equipment. In India it is common to observe the failures in supply system due to the faults that occur during the transmission or distribution. The faults might be LG (Line to Ground), LL (Line to Line), 3L (Three lines) in the supply systems and these faults in three phase supply system can affect the power system. To overcome this problem a system is built, which can sense these faults and automatically disconnects the supply to avoid large scale damage to the control gears in the grid sub-stations.
This system is built using three single phase transformers which are wired in star input and star output, and 3 transformers are connected in delta connections, having input 220 volt and output at 12 volt. This concept low voltage testing of fault conditions is followed as it is not advisable to create on mains line. 555 timers are used for handling short duration and long duration fault conditions. A set of switches are used to create the LL, LG and 3L fault in low voltage side, for activating the tripping mechanism. Short duration fault returns the supply to the load immediately called as temporary trip while long duration shall result in permanent trip.
The concept in the future can be extended to developing a mechanism to send message to the authorities via SMS by interfacing a GSM modem.


Easy to use, Self-explanatory kit.

All-inclusive solution kit.

Extensive audio-visuals available.

Branding-free material.

Non-Microcontroller Project.

Call/mail for Tech Support from 10 am – 7 pm.

Can be Customized for Arduino, Raspberry Pi, PIC


Hardware Requirements

  • OPAMPs
  • Thermistor
  • Resistors
  • Capacitors
  • Regulator
  • Transformers
  • Diodes
  • Relays

Software Requirements

  • None

Q & A

Buyer Feedback

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  1. Rated 4 out of 5

    Aakash mehta

    We came to know about edgefx is through searching key words fault in three phase in google By seeing the visibility of kit and credibility of edgefx Support team helped me to purchase kit online with some additional discounts. And the kit was delivered in right time with right components and the packing was excellent with beautiful box. I will refer this site to our friends

  2. Rated 4 out of 5


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  3. Rated 5 out of 5

    Avdhoot Puranik

    I got to know about edgefx through my senior. He has suggested me the website details.. So, i have directly visited the website. I found my project in edgefx kits & solutions that is why i have purchased project from edgefx. I like kit presentation. Supporting executives have helped me in purchasing the project. Provide more and more PPT’s & I want to give reference to my juniors and friends.

  4. Rated 4 out of 5


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  5. Rated 3 out of 5

    Dhrupad Mukherjee

    One of my Friends referred Its nice basically i want to do experimental projects thats why i purchased from your website