amazing technique of circuit breaker

1. A
Presentation
on
FAST WORKING ELECTRONIC CIRCUIT BREAKER
DEPARTMENT OF ELECTRICAL ENGG
BUNDELKHAND INSTITUTE OF ENGG & TECHNOLOGY, JHANSI
Presented by: Under guidance of:
Saurabh Chauhan(1604320909) Er. Bhupendra singh
Satyendra Yadav (1604320908) Electrical engg deptt.
Vikas Babu (1604320911)

2. TABLE OF CONTENTS
 INTRODUCTION
 ELECTRONIC CIRCUIT BREAKER
 COMPONENTS OF ECB
 BLOCK DIAGARM OF ECB
 WORKING OF ECB
 APPLICATIONS
 ADVANTAGES
 REFERENCES

3. INTRODUCTION
• Designed to shut down the power supply when it is
overloaded.
• Conventional MCB(thermal bimetal lever trip mechanism).
• Based on current sensing , comparator is used to o/p voltage.
• Rectified DC,after comparator output that drives a relay
through a MOSFET/Op-amp to trip the load.
• Relay by using three terminal, adjust the load to on/off.

4. COMPONENTS OF ECB
•LM358 (Dual Package Op-amp)
•7805 (+5V regulator)
•12V Step Down Transformer
•5V Relay
•BC547 (2Nos)
•10K Variable POT
•1K,2K,2.2K,10K,5.1K Resistors
•100uF, 10uF, 0.1uF Capacitors
•Diode Bridge
•Connecting Wires

5. POWER SUPPLY RECTIFIER VOLTAGE REGULATOR OP-AMP
RELAYLOAD
BLOCK DIAGRAM

6. POWER SUPPLY
•Provide a constant 5V for powering up the circuitry.
•Maps down the Input AC voltage to 0-5V for the op-amp.
•12V Step Down transformer for 12 dc.
• regulate voltage to 5V by using a 7805 Voltage regulator.

7. OPERATIONALAMPLIFIER LM358
• Comparison takes places,High Voltage value and Low voltage
Value compare with current voltage.
• Differential mode of an Op-amp.

8. RELAY
• Both are high, the Relay will get its ground and the will be
triggered.
• Any change in the AC main Voltage either of op-amp will go low
and relay will turn off.

9. APPLICATION
• It is used to protect relays.
• Programmable controllers.
• It is used to protect motors.
• Sensors.
• It’s helpful for actuators, valves etc.

10. ADVANTAGES
• Not contain mechanical component.
• Fast working.
• Less energy consumption.
• Complicated.
• More practical in application.

11. REFERENCES
• Book on “INTEGRATED CIRCUITS” By K. R. Botkar, Khanna Publishers, tenth
edition,2006.
• “Express PCB tutorial” by LEE MOREY, issue date 1/02/2015.
• “PCB Artist” issue date 18/09/2008
• “An Introduction to keilmicrovision”, 10/03/2016.
• R. K. Smith, P. G. Slade, M. Sarkozi, E. J. Stacey, J. J. Bonk, andH. Mehta, “Solid
state distribution current limiter and circuit breaker: application requirements and
control strategies,” IEEE Transactions on Power Delivery, vol. 8, no. 3, pp. 1155–
1164, 1993.
• J. M. Meyer and A. Rufer, “A DC hybrid circuit breaker with ultra-fast contact
opening and integrated gate-commutated thyristors (IGCTs),” IEEE Transactions
on Power Delivery, vol. 21, no. 2, pp. 646–651, 2006.

12. THANK YOU!