Major
features of a good protective gear
ü High
speedy
ü Selectivity
ü High
sensitivity
ü Stability
ü Simplicity
ü Reliability
...
June 8, 2013
Write down the Protective System of Alternator and Transformer
Alternator
protection
ü Differential
protection system
ü Balanced
Earth fault protection
ü Stator-inter
run protection
Transformer
protection
ü Using
Buchholz relay
ü Combined
leakage and overload protection
ü Circulating-current
scheme for transformer protection
...
Write down some major Faults of Alternator and Transformer.
Major faults
in Alternator
ü Failure of prime-mover
ü Failure of field
ü Over Current
ü Over Voltage
ü Over Speed
ü Stator Winding faults
ü Unbalanced loading
Major faults in
Transformer
ü Open
circuits
ü Over
heating
ü Earth
Fault
ü Phase-to-Phase
fault
ü Over
Load
ü Phase
to ground fault
ü Incipient
fault
ü High
voltage surge fault
...
How can a circuit element absorb power?
By converting electrical energy into-
Heat (resistors in toasters);
Light (light bulbs);
Acoustic energy (speakers);
Storing energy (charging a battery).
...
June 2, 2013
EEE Project -1 : 15- Step Digital Power Supply
_001.png)
Its is a simple circuit to obtain variable DC voltage from 1.25V to 15.19V in reasonably small
steps.
Download Instruction:
1. Click on the 'Download Now' button
2. Wait for five seconds and then click on ...
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