Posts Tagged ‘voltage rating’

Introduction to underground MV/LV distribution system (Part 2)

March 6th, 2019 | 1 Comment | Posted in Electrical distribution
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Basic Construction of underground cables

This article is the next and last part of Khuram’s article on underground MV/LV distribution systems. Enjoy and comment BELOW if you have any questions.

Underground electrical distribution is not only tidier but also less prone to environmental hazards as compared to the overhead distribution. Installation and maintenance cost, operational pros and cons, and a brief overview of cable structure are discussed in the previous part. Distribution transformers, switchgear and MV/LV cables are the main components of underground distribution system.

Structure and types of underground cables for a distribution system are discussed in this article.
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Ratings of Circuit Breakers

January 3rd, 2014 | Make a comment | Posted in Electrical distribution
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Here’s the third part of Nasir’s tutorial on Circuit breakers. Don’t forget – as members of the Electrical Engineering Community, you can send us your articles by mail too!

Introduction

Every electrical device has some specific ratings which specify its several characteristics which are already written on them. These ratings ensure proper and safe use of the device, guiding the users about the maximum and minimum values on which they can operate.

As we are dealing here with electrical devices, so the ratings discussed will also be related to electricity.

When talking about electricity and electrical components, the first things which come to our mind usually are somewhat like current, voltage and resistance, as they are the most basic things on which electrical concepts are based on. Similarly all the electrical components are also usually rated based upon these three things, especially voltage and current.

For safe and reliable use of a device, knowledge of these ratings is necessary. Moreover these ratings guide the user about if the specific component type is right for them to use and if it would be able to give them the best result.

For example the maximum current rating of a circuit breaker would guide us about the maximum current that can pass through the breaker without tripping it. In this way we could get knowledge about the safe limit in which we can get our desired result without damaging the device or the equipment attached to it.

Here I am going to discuss some basic terms which are related to the ratings of the circuit breaker.

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