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Failures In Electrical Systems, Equipments & Materials

Failures In Electrical Systems, Equipments & Materials

Failures In Electrical Systems, Causes & Prevention Introduction Electrical systems, equipments and materials are subjected to failures that can cause the total destruction of equipments and severe power outages. For this reason it is important to know main causes of those failures, their consequences and the procedures and tests to be performed in order to find the reasons why equipment …

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Working in Confined Spaces – Hazards & Safety

Working in Confined Spaces - Hazards & Safety

Working in Confined Spaces – Workers Health & Safety  What is Confined Space ? A confined space is defined, in what concerns labor and safety regulations, as an area which is enclosed with limited openings for entry or exit but it’s large enough for entering and working and is not designed for continuous worker occupancy. The definition of this type …

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Working on De-Energized Electric Circuits, Networks & Equipments

Working on De-Energized Electric Circuits, Networks & Equipments

De-Energized Work procedure & Safety in Electrical Engineering Introduction Electricity presents to the workers and installations different hazards and for this reason local operations and maintenance of electrical equipment should only be performed after a detailed analysis of risk, definition of appropriated procedures and can only be done by instructed personnel to avoid emergency case. Policies & Procedures Each company …

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How to Test a Diode using Digital & Analog Multimeter – 4 Ways.

Testing Diode using DMM (Diode Test Mode + Resistance Mode)

Test a Diode by Analog & Digital Multimeter Troubleshooting Electronic Devices & Components Troubleshooting in electronic and electrical engineering is an important part and one must know the basic skills and knowledge about the components to design and troubleshoot a circuit. It is advisable to test component before assembling and placing in a circuit. Sometimes, we get unexpected results and …

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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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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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How to Test & Fix the Printed Circuit Board (PCB) Defects?

Diagnosing of Defective Printed Circuit Boards PCB

Diagnosing of Defective Printed Circuit Boards (PCB) Before getting into details of printed circuit board (PCB), there are some basics you need to know about circuits. Electricity: It is the power provided to every instrument ranging from small lights to heavy machinery. Electricity is just a flow of electron from one level to other (upper level to lower mostly).So in …

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