Clik here to view.
Switching Impulse Test of the Transformer
Switching Impulse Test of the Transformer (on photo Mississippi State University High Voltage Laboratory as University Research Center)Purpose of the TestThe switching impulse test is applied to...
View ArticleClik here to view.
NEC Requirements for Emergency Systems
NEC Requirements for Emergency Systems (on photo Automatic Transfer Switch for Emergency Systems 240V 150A 3p)Introduction Emergency systems are generally installed in buildings that are or can be...
View ArticleClik here to view.
Difference Between Diffuse and Directed Light
Difference Between Diffuse and Directed Light (on photo Light Building 2012 Frankfurt LIQUID_LIGHT by Hopf & Wortmann)IntroductionHaving dealt with light quantity, conside-ration must be given to...
View ArticleClik here to view.
Heating of the Dry-type Transformer
Heating of the Dry-type Transformer (on photo Trihal Dry-type Transformer 1600kVA 10/0,42kV by Schneider Electric)Transformer ClassificationsAlthough transformers can be classified by core...
View ArticleClik here to view.
Simplify Downstream Installation with Cascading
Simplify Downstream Installation with Cascading (on photo Prisma P 0,42kV switchboard with Masterpact 2500A circuit breakers and Canalis busbar systems for distribution)Few Words About Cascading...
View ArticleClik here to view.
Gas-Insulated Transmission Line (GIL) System Design
Gas-Insulated Transmission Line (GIL) System Design (on photo Tunnel-Laid GIL by SIEMENS)Introduction to GILGas Insulated Transmission Line (GIL) Construction GIL systems are based on the successful...
View ArticleClik here to view.
Definitions of Voltage Transformer Parameters
Definitions of the Toltage Transformer Parameters (on photo withdrawable voltage trasnformers 36kV in Schneider Electric's DNF7 AIS MV Switchgear)VT ParametersRated voltage factorRated primary voltage...
View ArticleClik here to view.
Testing and Commissioning of Current Transformer
Testing and Commissioning of Current Transformer (on photo two current transformers in MV cubicle; by alcatelmacedonia @ Flickr)Content1. Objective 2. Test Equipment Required 3. Test...
View ArticleClik here to view.
Few Words About Three-Phase Alternator
Few Words About Three-Phase AlternatorIntroductionThe three-phase alternator, as the name implies, has three single-phase windings spaced such that the voltage induced in any one phase is displaced by...
View ArticleClik here to view.
Cable Engineering in Substation and Power Plant
Cable Engineering in Substation and Power Plant (on photo: Sealing of power cables through the outer wall in substation; by Roxtec Ltd. @ Flickr)Single core cable should be unarmored?Is it true that...
View ArticleClik here to view.
The Good, The Bad and The Ugly Cable Insulation
The Good, The Bad and The Ugly Cable InsulationInsulation FundamentalsThe fundamental understanding of cable insulation properties forms the foundation for assessment of cable operability.These same...
View ArticleClik here to view.
Safety Clearance Recommendations for Transformer
Safety Clearance Recommendations for Transformer (on photo 10/0.4 kV transformer substation by FIMA)Clearance TablesClearance from Outdoor Liquid Insulated Transformers to Buildings (NEC)Clearance...
View ArticleClik here to view.
Corrosion Types Encountered With Power Cables
Corrosion Types Encountered With Power Cables ContentIntroductionAnodic Corrosion (Stray DC Currents)Cathodic CorrosionGalvanic CorrosionChemical CorrosionAC CorrosionLocal Cell CorrosionOther Forms...
View ArticleClik here to view.
Industrial Applications of Brushless Servomotor
Industrial Applications of Brushless Servomotor (on photo Hudson family of Brushless DC Servo Motors by Teknic)IntroductionA synchronous machine with permanent magnets on the rotor is the heart of the...
View ArticleClik here to view.
Short Overview of LV Cable Terminations
LV Cable terminations - Short Overview A termination is the electrical and physical connection of a cable end to a piece of equipment or another cable. A splice is the electrical connection of a cable...
View ArticleClik here to view.
Transformers Are Never Silent
WEG - A three-phase oil transformer 225 MVA, 275 kV – for distribution of energy at Tealing Grind substation, of Scottish Hydro-Electric Transmission Ltd., in Scotland, one of the largest Utilities in...
View ArticleClik here to view.
Smart and Safe Protective Shutdown with Selectivity
Smart and safe protective shutdown with selectivity (on photo ABB's MNS Low Voltage Switchgear)Safety pointFrom the point of view of the operational safety and reliability of an entire low-voltage...
View ArticleClik here to view.
Application of 4-pole Switchgear Devices
Application of 4-pole Switchgear Devices (on photo Electrical panel board motors control by C&P Engineering @ Flickr)IntroductionThe majority of low-voltage switchgear is equipped with three...
View ArticleClik here to view.
Transformer Differential Protection Principles
Transformer Differential Protection Principles (on photo Penelec Collinsville transformer substation 4 by PA Powerliner @ Flickr)IntroductionSimilar to bus protections, transformers are protected by...
View ArticleClik here to view.
Motors for Hazardous Areas
Motors for Hazardous Areas (Explosion-proof Hazardous Location Motor Dayton for locations like petrochemical and chemical processing, mining, and grain handling industries)Hazardous AreasElectrical...
View Article