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Transmission and distribution network planning projects are highly individual, because in each case the special conditions of the supply area, load demand and geographic distribution, technical standards and requirements, current status of the existing system, etc., have to be considered. The actual scope and goal of each project are different as well.

http://electrical-engineering-portal.com/9-typical-issues-addressed-in-a-td-network-planning-project
Transmission and distribution network planning projects are highly individual, because in each case the special conditions of the supply area, load
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In situations where there are a large number of cables varying in voltage and current levels, the IEEE 518-1982 standard has developed a useful set of tables indicating separation distances for the various classes of cables.

There are four classification levels of susceptibility for cables.

Susceptibility, in this context, is understood to be an indication of how well the signal circuit can differentiate between the undesirable noise and required signal. It follows that a data communication physical standard such as RS-232E would have a high susceptibility, and a 1000-V, 200-A AC cable has a low susceptibility.

http://electrical-engineering-portal.com/cable-spacing-as-a-means-of-noise-mitigation
Electromagnetic induction can be minimized in several ways. One way is to put the source of electromagnetic flux within a metallic enclosure
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This Roadway Lighting Design Manual has been developed to provide training on the design of roadway lighting systems. Participants will learn the fundamentals needed to design lighting systems. Example problems will help develop the concepts needed to understand and design a lighting system.

A full lighting plan set is provided as a reference.

http://electrical-engineering-portal.com/download-center/books-and-guides/electrical-engineering/roadway-lighting-design
This Roadway Lighting Design Manual has been developed to provide training on the design of roadway lighting systems. Lighting at intersections is
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Computers and allied equipment, such as programmable controllers, frequently require AC sources that have no more than 5% harmonic voltage distortion factor [THD], with the largest single harmonic being no more than 3% of the fundamental voltage. Higher levels of harmonics result in erratic, sometimes subtle, malfunctions of the equipment that can, in some cases, have serious consequences.

http://electrical-engineering-portal.com/essential-basics-of-total-harmonic-distortion-thd
THD stands for Total Harmonic Distortion. The level of harmonic distortion is often used to define the degree of harmonic content in an alternating signal.
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But what is AC or DC?? IS EXACTLY THE SAME DEPENDING THE INTERVAL of FREQUENCY RELATIVE TO OUR SCALE OF PERCEPTION THE AC SHIFT TO DC, AND CHANGING THE REFERENCE TO MEASURE THE PASS POLE REFERENCE POINT CHANGE TOO then what is the problem to teleportation the energy by space time??.
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NEW #EE Guide Is Out!!

Guide to Planning of Electric Power Distribution
// by SIEMENS

Download - http://electrical-engineering-portal.com/download-center/books-and-guides/electrical-engineering/planning-power-distribution

The planning of electric power distribution in buildings and infrastructure facilities is subject to constant transformation. The search for an assignment-compliant, dependable solution should fulfil those usual requirements placed on cost optimisation, efficiency, and time needs. At the same time, technical development innovations and findings from the practical world are constantly seeping into the planning process.

Our books on electric power distribution are intended to support you in your work as a designer and to provide you with a continuously updated and dependable instrument.

The specific requirements of infrastructure facilities of individual industries and building types on electric power distribution is worked on in the application manuals.

http://electrical-engineering-portal.com/download-center/books-and-guides/electrical-engineering/planning-power-distribution
The planning of electric power distribution in buildings and infrastructure facilities is subject to constant transformation. Integrated planning and cost
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The meaning of PLC…

“PLC” means “Programmable Logic Controller”, that’s clear. The word “Programmable” differentiates it from the conventional hard-wired relay logic. It can be easily programmed or changed as per the application’s requirement. The PLC also surpassed the hazard of changing the wiring.

http://electrical-engineering-portal.com/what-can-a-plc-do-why-do-we-use-them
So, what can a PLC actually do? It can perform relay-switching tasks, conduct counting, calculation and comparison of analog process values, controlling
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There are a lot of opportunities to optimise lighting system in (almost) any industrial facility. Seven practical energy-efficiency opportunities to reduce energy use cost-effectively are given below:

- Lighting controls
- Replace T-12 tubes by T-8 tubes
- Replace mercury lights with metal halide or high pressure sodium lights
- Replace metal halide (HID) with high-intensity fluorescent lights
- Replace magnetic ballasts with electronic ballasts
- Optimization of plant lighting (Lux optimization) in production and non-production departments
- Optimum use of natural sunlight

http://electrical-engineering-portal.com/7-energy-efficiency-improvement-opportunities-in-lighting-system
Here are 7 practical energy-efficiency opportunities to reduce energy use cost-effectively and to optimise lighting system in industrial facility.
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This is the simple list of basic terms you can often hear when testing and measurements of electrical installation (in general) is being performed. While expirienced electrical engineers will find this list short, I hope beginners will catch the essence and continue exploring this field of electrical engineering.

Feel free to suggest me an expression (along with description) you think it should be listed, it will be my pleasure to add it to the list and to move away from number 13 :)

http://electrical-engineering-portal.com/13-basic-expressions-often-used-in-electrical-testing
This is the simple list of basic terms you can often hear when testing and measurements of electrical installation (in general) is being performed.
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More than 85% of the electrical energy input to an air compressor is lost as waste heat, leaving less than 15% of the electrical energy consumed to be converted to pneumatic compressed air energy. This makes compressed air an expensive energy carrier compared to other energy carriers.

http://electrical-engineering-portal.com/11-energy-efficiency-improvement-opportunities-in-compressed-air-systems
More than 85% of the electrical energy input to an air compressor is lost as waste heat, leaving less than 15% of the electrical energy consumed to be
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The protective device shall automatically disconnect the supply so that, in the event of a fault between a live part and an exposed-conductive-part or a protective conductor, a prospective touch voltage exceeding 50 V a.c. (25 V in special environments) does not persist for a time sufficient to cause a risk of harmful physiological effect in a person in contact with simultaneously accessible conductive parts.

read more //

http://electrical-engineering-portal.com/two-circuit-breaker-types-for-automatic-disconnection-of-the-supply
This technical article deals with two most common devices suitable for the automatic disconnection of the supply and able to detect earth fault currents
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Direct-on-line starting (DOL)

As the name suggests, direct-on-line starting means that the motor is started by connecting it directly to the supply at rated voltage. Direct-on-line starting, (DOL), is suitable for stable supplies and mechanically stiff and well-dimensioned shaft systems – and pumps qualify as examples of such systems.

http://electrical-engineering-portal.com/comparision-of-direct-on-line-dol-and-star-delta-motor-starting
Direct-on-line starting, (DOL), is suitable for stable supplies while star-delta starters are particularly suited for high inertias, where the load
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Hello guys, I have a doubt and was unable to find it on web.
Can i  add solar DC output, Wind DC output and Fuel cell DC output to create a DC bus, all sources in parallel?
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It is a common misconception that electrical equipment built using aluminum conductors will always be larger than the same equipment using copper conductors. While the actual conductor within the equipment will be larger with aluminum, many times the enclosure for the equipment is the same size whether copper or aluminum conductors are used.

http://electrical-engineering-portal.com/differences-in-size-and-weight-of-equipment-using-copper-and-aluminium-conductors
When considering the differences between copper and aluminum conductors in electrical equipment, size must be acknowledged, but for most equipment types
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A 100KVA transformer either made of aluminium or copper can generate same amp
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Introduction

EEP is engineering portal dedicated to electrical science and education and it's core purpose is to spread knowledge and educate power engineers in fields of power substations, industrial automation, low voltage, medium voltage and high voltage applications, protection relays, IEC standards, lighting, KNX systems etc.

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