A PROJECT ON HIGH TENSION TRANSFORMER PROTECTION
DUE TO OVER HEATING

Object

Aim

Platform Used

Block Diagram

Power Supply Section

Micro Controller Section

Functional Numeric Display(FND) Section

Relay Section

Working

Advantage

Application

Result

Conclusion
In this system, If the temp. rises upto first temp. limit then
firstly FAN will automatically operated, if temp. is adequate
then it’s ok but if it is not proper then WATERPUMP will be
operated to maintain the temp. and if WATERPUMP unable to
maintain to temp. then the transformer will go to half load
condition. Afterwards if temp. becomes low then the
transformer will resume its working as normal. There is a
temperature sensor which is placed in a transformer whose
temperature is to be controlled. Transformer during its
operation gets heat up to prevent it from excess heat we
developed this system. The temperature sensor senses the
temperature and supplied the signal to controller which decide
or analysis the temperature and compares it.


The main aim of this project is save the transformer
from burning. This is mainly done by the controlling the
temperature of transformer . By analyzing the
temperature, our system controls the temperature by
running fan on the air to remove excess heat.
Here we use a temperature sensor which can sense the
temperature of the transformer ,on sensing temperature
it will forward the measured temperature to the
microcontroller which control the entire operation of
controlling temperature.
HARDWARE USED
 PIC microcontroller 16f72
 LM7805 Regulator
 Power Supply
 Resistors
 Capacitors
 Transistors
 Connectors
 FND (functional numeric display)
 Light emitting diode(LED)
 Temperature sensor
 RELAY
 FAN
 Motor
SOFTWARE USED
 MPLAB IDE v7.00:
Source code Editor
Assembler
RLMT Connector:- It is a connector used to connect the step down transformer
to the bridge rectifier.
Bridge Rectifier:- It is a full wave rectifier used to convert ac into dc , 9-15v ac
made by transformer is converted into dc with the help of rectifier.
Capacitor:- It is an electrolytic capacitor of rating 1000M/35V used to remove
the ripples. Capacitor is the component used to pass the ac and block the
dc.
Regulator:- LM7805 is used to give a fixed 5v regulated supply.
Capacitor:- It is again an electrolytic capacitor 10M/65v used for filtering to
give pure dc.
Capacitor:- It is an ceramic capacitor used to remove the spikes generated
when frequency is high(spikes).
So the output of supply section is 5v regulated dc.
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