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Circuit breakers (CBs) do interrupt fault currents and close onto faults. Besides, they could be used as isolation devices like disconnectors. The CBs manufacturers’ brochures and standards provide extensive data to select and assess the CBs performance, but designers must... Read more

The post MV/HV switchgear (circuit breaker) switching capability and suitability for specific applications appeared first on EEP - Electrical Engineering Portal.

This technical article we will go through a number of existing applications for conducting a wide range of electrical studies. However, the practice says that studies involving load flow and fault analyses are the most commonly utilized programs in power transmission... Read more

The post Eleven most important calculations you can perform with power system analysis software appeared first on EEP - Electrical Engineering Portal.

Welcome to this comprehensive technical article that delves into the intricacies of electrical schematics, shedding light on crucial elements such as loops, wire connections, auxiliary contacts, MCBs, contactors, circuit breakers, isolators, earth switches, and terminal blocks. In the world of... Read more

The post Fundamental concepts of schematic drawings: Going deeper into analysis and design intricacies appeared first on EEP - Electrical Engineering Portal.

The majority of utilities are normally extremely well aware of the economic aspects and savings that can be obtained at all stages of the transformer’s life cycle. This is because the purchase of a transformer involves a very high capital... Read more

The post 11 factors that significantly influence the transformer price (Be careful when specifying) appeared first on EEP - Electrical Engineering Portal.

This article addresses the Variable Frequency Drive (VFD) concept in several aspects that matter the most in selecting the proper VFD for applications. One of the important factors is the control type required for a given application since it is... Read more

The post Guidelines for selecting the proper Variable Frequency Drive (VFD) for motor applications appeared first on EEP - Electrical Engineering Portal.

The countries of the European Economic Area (EEA) have agreed on common minimum regulatory requirements in order to ensure the free movement of products within the EEA. The CE marking indicates that the product works in conformity with the directives... Read more

The post EN61800-3 (IEC1800-3) – Adjustable speed electrical power drive systems appeared first on EEP - Electrical Engineering Portal.

"Dark Steering" flirts subtly with the sounds of modern dubstep, mixing them with atmospheric squeals and detailed drum programming. The result is an unbelievably fitting soundtrack for a life-or-death motorcycle race through neon-lit city streets.

Nowadays, when we all see and feel the colossal crisis looming on the horizon, the question of energy security is among the first things on the table in each country’s management. It’s now essential more than ever for each country... Read more

The post Electrical engineering for hydropower, from run-of-river to pumped storage plants appeared first on EEP - Electrical Engineering Portal.

Passengers will be able to use their mobile phones as tickets from this spring London, 23rd April 2014 – Thames Clippers today announced that they have signed a five year contract with Masabi, the leader in mobile ticketing and payments for transit, to bring smartphone ticketing to its River Bus […]

The post Thames Clippers and Masabi to Launch Mobile Ticketing on Central London River Bus Services appeared first on Masabi.

To explain in very simple words, I would say that SCADA is a bunch of equipment that provides an operator at a remote location with sufficient information to determine the status of particular equipment/process and make actions without being physically... Read more

The post Five ingredients that make SCADA operation delicious appeared first on EEP - Electrical Engineering Portal.

I have English Teacher X's obra prima to read next and have enjoyed the other ebooks - they include a lot of sensible and realistic advice - but I didn't enjoy Speaking Activities that Don't Suck as much.

After we changed everyone's passwords a couple of weeks ago, people were asking some questions about passwords and personal data.  Firstly, we don't hold much personal data- as people have usernames, we don't know real names. We do ask for the year and date of birth to comply with the Children's Online Privacy Protection Act (COPPA). We ask for an active email account and send a link that has to be clicked on to complete the registration. This is to make it harder for automated registration by advertisers and spammers. We also ask where you're from, where you are based now and what your first language is. There are also optional fields where people can add biographical information and interests if they wish. Unless you use your real name as a username or connect via Facebook, the data is anonymous. If an acount is deleted, this information is deleted from our records.

We are updating our site to incorporate the changes that have been made by the updates to the First Certicate in English (FCE) exam from Cambridge English.

Typely is a free editor that claims to be able to edit grammar. Most grammar tools are fairly limited, and this is no exception.

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January 12
Fourth Grade Community Project: Going to the Museum
Encourage your students to research and visit a museum in your community with these activities.

Substation earthing, or grounding, is essential for electrical safety and reliability in substations, which are critical nodes in the power distribution network. Proper earthing ensures safe dissipation of fault currents into the ground, preventing dangerous voltage build-ups that could cause... Read more

The post Mechanical Check, Visual Inspection and Electrical Test of the Substation Grounding System (1) appeared first on EEP - Electrical Engineering Portal.

When reactive power devices, whether capacitive or inductive, are purposefully added to a power network in order to produce a specific outcome, this is referred to as compensation. It’s as simple as that. This could involve greater transmission capacity, enhanced... Read more

The post Do you know what reactive power compensation is? If not, keep reading, it’s important. appeared first on EEP - Electrical Engineering Portal.

Since the subject of this article is somewhat not-that-easy to understand, I suggest starting with the basics of the synchronous motor. In the synchronous motor, the basic magnetic field is obtained by direct current excitation rather than through the air... Read more

The post The art of achieving synchronous motor transient stability (especially in weak grids) appeared first on EEP - Electrical Engineering Portal.

Around twenty five percent of the energy that is consumed by electric motors worldwide is accounted for by pumping systems, and certain industrial facilities use anywhere from twenty-five to fifty percent of the total electrical energy available. There are significant... Read more

The post The essentials of pumping, pump speed and flow rate control that engineers MUST know appeared first on EEP - Electrical Engineering Portal.

At low voltage level, SCADA applications are usually used for process control and monitoring of equipment. Furthermore, incoming circuit breakers or switch disconnectors inside large LV switchboards may also be operated remotely, by the command given from the SCADA working... Read more

The post Field devices and signals used for LV SCADA operations appeared first on EEP - Electrical Engineering Portal.

As you should already know, current transformers are used for metering and relay protection purposes. When we are talking about current transformers used for metering, their performance is of interest during normal loading conditions. Metering transformers may have very significant... Read more

The post Four special connections of current transformers in relay protection applications appeared first on EEP - Electrical Engineering Portal.

This article will shed some light on how adding capacitors gives the distribution system the necessary reactive power to return the power factor to the required level. Capacitors act as a source of reactive energy, which accordingly reduces the reactive... Read more

The post A few practical ways to determine required reactive energy compensation for a power system appeared first on EEP - Electrical Engineering Portal.

Energy meters are one of the most important components for monitoring and data acquisition in a power system network with roles in every part of the power system network, from the generation to the commercialized end-users, through multiple transmission and... Read more

The post Energy metering in LV/MV substations and utilities: Dos and don’ts in installation and operation appeared first on EEP - Electrical Engineering Portal.

Capacitors store electric charge. Because the charge is stored physically, with no chemical or phase changes taking place, the process is highly reversible and the discharge-charge cycle can be repeated over and over again, virtually without limit. Electrochemical capacitors (ECs) variously... Read more

The post Super Capacitors – Different Than Others (part 1) appeared first on EEP - Electrical Engineering Portal.

Continued from first part: Super Capacitors – Different Then Others (part 1) Equivalent circuit How to measure the capacitance? Charge Method Discharge Method Measure Capacitance Capacitor types Advantages of the supercapacitors Super capacitors can be illustrated similarly to conventional film,... Read more

The post Super Capacitors – Different Than Others (part 2) appeared first on EEP - Electrical Engineering Portal.

This technical article covers some specific considerations (modern power supply, electric distribution, transportation, lighting controls, and communication systems) for a few most common type of commercial facilities such as banks, colleges and universities, fire stations, health care facilities and office... Read more

The post Specific electrical design tips for a few most common types of commercial facilities appeared first on EEP - Electrical Engineering Portal.

Reactive energy compensation is an essential process in improving energy efficiency. It reduces the power consumption and thus its cost, enables optimum use of installations by preventing them being oversized, and more generally it improves the quality of energy systems.... Read more

The post The theory behind reactive energy compensation that every engineer should know appeared first on EEP - Electrical Engineering Portal.

You should know that single-phase motors are rarely rated above 5 kW. Fractional-kilowatt motors, most of which are single-phase, account for 80−90% of the total number of motors manufactured and for 20−30% of the total commercial value. A typical modern... Read more

The post The most used types of single-phase motors in the world appeared first on EEP - Electrical Engineering Portal.

At the beginning of my career in 2005, I had the opportunity to work at a 500kV substation with the National Transmission and Dispatch Company in Pakistan. During this time, I was introduced to various tools and techniques that were... Read more

The post Mechanical Check, Visual Inspection and Electrical Test of the Substation Grounding System (2) appeared first on EEP - Electrical Engineering Portal.

Followed by Q&A with actor Colin Firth and director Tom Hooper

Students are invited to submit an original campaign on a food issue they feel strongly about, for the chance of winning great prizes for the whole school.

Celebrate the film’s release on DVD and Blu-Ray with additional study materials for KS4 English and Media

Online resource for KS2 Literacy, Science and ICT. Interactive tasks suitable for the ICT suite, Assembly Hall & for homework to be used with Film Education's Zookeeper wallchart & CD-ROM.

KS2 competition to create the most original screen-pet profile for a chance to win the fabulous prize of adopting Mjukuu, ZSL London Zoo's youngest western lowland gorilla and a goody bag.

We believe viewing a wide variety of films is an essential part of young people’s film education. What film titles do you think all children and young people should see? We welcome your suggestions!

Great competition for KS3 students based on the second Wimpy Kid film, Diary of a Wimpy Kid 2: Rodrick Rules offering great prizes, plus teaching ideas and online clip activities

The Young Film Critic competition is open for entries from students aged 4-19. The supporting website features all the details, along with a brand new set of classroom resources to support entries.

Online study materials on The Muppets, suitable for 7-11 year olds. The activities cover aspects of Literacy, Music and ICT, and features key clips and interactive activities for the classroom or computer suite.

Win the opportunity to attend the premiere of Disneynature’s African Cats in London by entering our writing competition for KS3 this Easter!

 National Schools Film Week screening of Private Peaceful, plus Q&A with author Michael Morpurgo

About brothers during the First World War, this resource is aimed at 11-14 yr olds studying history and English, and features original interviews with the novel’s author and film’s screenwriter

Resources on this new adaptation of Dickens’ classic explore the novel’s key ideas in the context of this new film production. Suitable for 13-19 English, media and film studies

Exclusive clips and photos from our preview screening of Private Peaceful with author Michael Morpurgo & actors Full Article