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Ultra Fast Acting Electronic Circuit Breaker
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PROJECT DESCRIPTION

The project is designed to shut down the power supply when it is overloaded. Conventional circuit breaker like MCB based is on thermal bimetal lever trip mechanism. It is very slow and the trip time is dependent upon the percentage of overload.

This project senses the current passing through a series element and the corresponding voltage drop is compared against the preset voltage proportional to the current by a level comparator to generate an output for the load to trip.

The concept of electronic circuit breaker came into focus realizing that conventional circuit breakers such as MCBs take longer time to trip. Therefore, for sensitive loads it is very important to activate the tripping mechanism at the shortest possible time, preferably instantaneously.

This project is demonstrates fast tripping mechanism as against the slow one like MCB. Electronic circuit breaker is based on the voltage drop across a series element proportional to the load current, typically a low value resistor.

This voltage is sensed and rectified to DC which is and then compared with a preset voltage by a level comparator to generate an output that drives a relay through a MOSFET to trip the load. The unit is extremely fast and overcomes the drawback of the thermal type. It uses a microcontroller from 8051 family.

Further the project can be enhanced by using a CT for galvanic isolation between mains and control circuit. Power electronic devices such as thyristors / IGBTs can be used for ultra fast operation compared to all the methods.

PROJECT HIGHLIGHTS
Current Sensing.
Extensive audio-visuals available.
Branding-free material.
Call/mail for Tech Support from 10 am - 7 pm.
Pre-programmed Microcontroller.
All-inclusive solution kit.
Easy to use, Self-explanatory kit.
BLOCK DIAGRAM
Hardware Requirements
  • 8051 series Microcontroller
  • Op-amp
  • Transformer
  • MOSFET
  • Diodes
  • Capacitors
  • Resistors
  • LED
  • Crystal
  • LCD
  • Voltage Regulator
  • Relay
  • Lamps
Software Requirements
  • Keil compiler
  • Languages: Embedded C or Assembly
Q & A
Q:  What is the difference between Electronic circuit breaker and normal circuit breaker?
A:  Normal circuit breaker is dependent on thermal bimetal lever trip mechanism, whereas Electronic circuit breaker is formed using current sensing element and comparators
Q:  What is the role of microcontroller in this project?
A:  The microcontroller is programmed to display the circuit breaker conditions.
Q:  Will it auto return after fault (overload) clearance?
A:  No, one has to restart the device, as it would toggle between on and off till overload condition is cleared.
Q:  Which microcontroller is used in this project?
A:  A 40 pin microcontroller from 8051 family is used in this project.
READ WHAT OTHERS HAVE SAID
Average Rating
 4.5/5
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Showing 4 of 7 reviews Show All
Himanshuzade, Nagpur. on 17th June, 2014, 05:06 PM

I decided to buy a kit from Edgefx because online purchase facility is available. I like my project very much and service was very good.

DeepanJashu, Westbengal on 21st May, 2014, 02:21 PM

I decided to buy a kit from Edgefx because got an idea how to do the project looking at Edgefx site and satisfied.I like the Idea that is innovative and service is good.Continue with what you are doing.

Vatsal Patel., kalol. on 20th March, 2014, 11:05 AM

I decided to buy a kit from Edgefx on seeing the website.I bought the DIY kit and i liked it. The quality and value for money is great.

K. Sandeep Reddy, on 27th April, 2013, 01:48 AM

I like the prototype concept in DIY.

Rating Breakdown (7 Reviews)
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