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All About Electrical Protection Systems, Devices And Units

Electrical Protection Systems And Units

Electrical Protection Units And Systems Introduction to Electrical Protection Systems HV, MV and LV[1] electric installations and equipments are subjected to internal and external faults that can cause serious damages in persons and other equipments. To avoid and to minimize the consequences of those faults protection devices associated to equipments that are able to break electric current are required. For …

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Maintenance of Transformer – Power Transformers Maintenance, Diagnostic & Monitoring

Maintenance of Power Transformer - Transformer Diagnostic and Monitoring

Maintenance of Power Transformer – Transformer Diagnostic and Monitoring Introduction Being transformers static machines without any moving and turning parts, they are very reliable machines, and if maintained properly, can last for 40 years or more. Also they do not trip or blow when oven-stressed (except under extreme conditions), transformers are frequently overloaded and allowed to operate well beyond its …

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Emergency Generator Set – Construction, Installation, Maintenance & Wiring

Construction and Components of Emergency Generator

An Overview of Emergency Generator Set (Manuel Bolotinha) Introduction to Emergency Generator Set Hospitals, airports, shopping malls and office buildings, just to mention some examples, are very sensitive, in what concerns safety of people and goods, to power outages caused by faults in medium (MV) and low voltage (LV) distribution networks and even in high voltage (HV[1]) transmission networks. When …

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Transformers Fire Protection System – Causes, Types & Requirements

Transformers Fire Protection System – Causes, Types & Requirements

Basic Requirements for Transformers Fire Protection System By: Manuel Bolotinha Causes of Fire in Transformers Excessive overheating, extremely severe short circuits, faults in the oil and lightning strokes may cause a fire on transformers. Transformer fires are rare but the impact is great. Even though a transformer involved in a fire likely will be destroyed almost immediately, as seen in …

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Submarine Cables – Construction, Characteristics, Cables Laying & Joints

Submarine Cables – Construction, Characteristics, Cables Laying & Joints

An Introduction to Submarine Cables & Subsea Power Cables Introduction to Submarine Cables The development of offshore wind farms and oil and gas offshore platforms requires the installation of power, control and monitoring and communications cables between the platforms and the main land. For this purpose submarine cables are installed, which are also used for power and/or communications between islands …

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Design of Grounding / Earthing System in a Substation Grid

Design of Grounding Earthing System in a Substation Grid - Substation earthing grid

Design of Earthing / Grounding System in a Substation Grid By: Manuel Bolotinha Introduction to Substation Earthing Grid In high and medium voltage[1]Air Insulated Substations (AIS) the electromagnetic field, which causes are the static charges of bare cable and conductors and by the atmospheric conditions (surges), induce voltages at no-live parts of the installation that create potential differences between metallic …

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Introduction to Harmonics – Effect of Harmonics on Power System

Introduction to Harmonics

What are Harmonics and How to Filter and Eliminate it. (Manuel Bolotinha) Introduction to Harmonics The quality of electrical power supply is an important issue both for utility companies and users, but that quality may affected by electromagnetic disturbances. Among these disturbances it must be highlighted harmonics that happens in all voltage levels and whose study, calculation of acceptable values …

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Voice Recognition Based Home Automation System

Voice Controlled Home Automation System using 8051 Microcontroller

Voice Controlled Home Automation System using 8051 Microcontroller Voice Recognition Based Home Automation With the evolution of smart devices and various wireless communication technologies, it is now possible to leverage these techniques for the best possible benefits for human beings. One such benefit involves controlling of home appliances irrespective of the distance, saving time as well as energy. This smart …

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What is Automated Fingerprint Identification System and How it Works?

What is Automated Fingerprint Identification System and How it Works?

Automated Fingerprint Identification System – Modules & Applications Introduction to Fingerprint Identification System Fingerprint Identification system or Dactyloscopy is a unique process of identification by comparing the fingerprint impressions of individuals. It used the fact no two individuals have similar finger patterns. It is one of widely used techniques for acquiring details of a person and is an easy and …

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Fully Automatic Water Level Controller using SRF04

Automatic Water Level Controller using SRF04, PIC16F84A & L293D Driver

Full Automatic Water Level Controller using SRF04, L293D & PIC16F84A Introduction to the Automatic Water Level Controller Monitoring and controlling the level of water in water tanks is one of the most important work in almost many residential as well as commercial areas. In most cases, especially in residential buildings, due to unavailability of any automatic means, it becomes tiresome …

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