Posts Tagged ‘fault protection’

Earth fault protection of the rotor in turbo generator in REK Bitola

April 5th, 2019 | Make a comment | Posted in Power quality
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Picture 1. Earth fault protection of rotor

Earth fault is a common problem that appears when a generator is working and is connected on the system. The insulation of the generator’s rotor coil is working in bad working conditions and is constantly exposed on mechanical and thermal forces, due to the heat dilatation of the rotor coil.

Earth fault can be caused from damaged insulation, filth on the rings and the joint cables. After the first earth fault, it is most likely second fault to occur.

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Ground Fault Protection

April 18th, 2017 | 8 Comments | Posted in Electrical Safety
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What about a new article from our fellow electrical engineer Jesús Pérez Díaz? Today he tells you about Ground fault protection so if you’re interested in this topic, enjoy!

And if you have knowledge to share about it, write a comment or an article. You just need to send us a mail.

Circuit Breaker Ground fault relay

ABB Circuit Breaker & Ground fault relay | image: ndu.cl

Introduction

Statistics have shown that electrical faults involving Ground are more likely to occur than any other one. A ground fault happens when any of the phase conductors (also known as: hot, live, and line) gets on contact to ground or any grounded part such as a grounded motor frame. It could take place because of a reduction of insulation, cable damage, overvoltage, an accident originated by people or incorrect wiring, and bad equipment operation.
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