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Design And Construction Of Automatic Changeover Switch With Indicator
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1.2. AIMS AND OBJECTIVES OF THE PROJECT
The aims and objectives of this project is to:
Design
and construct an automatic change-over switch with indicator that will
switch load from the mains power supply (PHCN) power supply (Generator)
with simplicity.
To introduce a circuitry that will sense power
outage and at the same time sense fluctuationin the power supplied to
the load at any point time.
SIGNIFICANCE OF THE PROJECT
This
project eliminates the stress, time delay and other drawbacks in
manually operated types. The project is modified to display the phase in
use at a particular time using a single seven segment Display and its
appropriate circuitry.
SCOPE OF THE STUDY
This project work was
carried out primarily with the aim of solving the problem of manual
change-over switch when there is need for changing to generator due to
power failure from public power supply.
Also, the essence of this
project work is to design and construct a 90A, 220V, 50Hz automatic
change-over switch which will serve as a standby switch to generator
when there is power outage.
LIMITATIONS OF THE PROJECT
Due to
the principal operation of the device, it cannot switch two voltage
supply once, during operation. So the power switching of the supplies
depends on the state in which the device is, that means it can only be
in an on or off state, so as to avoid voltage clashing which will lead
to fire outbreak.
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ABSRACT - [ Total Page(s): 1 ]This project work deals on the design and construction of an automatic power changeover that will change/transfer control from MAINS to Gen set and can switch ON/OFF the Gen automatically. The system integrates phase selector in MAINS and changeover to Gen. It is designed in several blocks all combined to from one functional unit. A +5v regulated DC power supply unit forms the first block whose output is fed to priority encoder and decoder block. The output of the BCD – Decimal decoder is ... Continue reading---
