Many electrical engineers are studying diesel generator while neglecting its prime mover, DIESEL ENGINE. While many troubles are met and the cause did not related to the alternator itself....
Generator Protection
Generator protection
Automatic circuit breaker is the first protection for the diesel generator against overload and short circuit faults; while it can be embedded with other protections for ground fault, voltage unbalance and frequency. It means that generator circuit breaker mandatory. And it is recommended to have a specific generator trip unit which can be adjusted thermally and magnetically (in case of thermo magnetic trip unite) and for solid state trip unite usually it is adjustable. Also, regarding circuit breaker no. of pole, it is recommended to be four poles to insure complete isolation for generator terminals.
Other protections can be offered for generator as following: –
Under/ over voltage
Under /over frequency
Earth fault
Differential current
Reverse power (in case of multi sources)
and others
The following diagram shows some of recommended generator’s protections.
Other articles
Diesel Generators
18th pulse transformers
18th pulse transformersThe power transformation theory (Magnetic circuitry) is used in many special applications in order to gain more quality, stability and avoid more cost or more waste. One...
CONTACTORS UTILISATION CATEGORIES
Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making itIn order to qualify...
Electric Power Generation
All generators send out energy in the form of electrical power, and they have to be given the equivalent mechanical energy. This means that they have to be driven...
