Clik here to view.
Impacts of Voltage Dips on Power Quality Problems
Impacts of Voltage Dips on Power Quality ProblemsWhat is causing voltage dips? Figure 1 shows the profile of a voltage dip, together with the associated definitions. The major cause of voltage dips on...
View ArticleClik here to view.
How to calculate voltage regulation of distribution line
How to calculate voltage regulation of distribution line (on photo: Distribution Lines - Oaxaca, Mexico, 2013 via FlickR)Content Introduction to voltage regulationVoltage Regulation for 11KV, 22KV,...
View ArticleClik here to view.
Split-phase motors for medium-duty applications
Split-phase motors for medium-duty applications (photo by MikeC5 at practicalmachinist.com)Starting winding in series with a centrifugal switch The split-phase (SP), or more accurately, the...
View ArticleClik here to view.
Few Words About Capacitor-Start (CS) Motors
Start-run capacitor single-phase induction motor (Source ABB) The capacitor-start (CS), or more precisely, capacitor-start, induction-run motor, is a modified split-phase induction motor used for...
View ArticleClik here to view.
An Introduction To SCADA For Electrical Engineers – Beginners
An Introduction To SCADA (Supervisory Control And Data Acquisition) For Beginners // On photo Monitor iFIX By ServiTecno via FlickRControl and SupervisionIt is impossible to keep control and...
View ArticleClik here to view.
Mysterious Synchronous Operation Of Generator
Mysterious Synchronous Operation Of Generator (on photo: Generator at Manchester Museum of Science and Industry - by Mr Woodstock via Flickr)What is the synchronisation?To many people, the operation of...
View ArticleClik here to view.
Thinking About Security Considerations in SCADA Systems (1)
Security Considerations in SCADA Systems SCADA System can be affected by a number of threats, which may be natural or intentional. So it is very much important to focus on security aspects of SCADA...
View ArticleClik here to view.
Thinking About Security Considerations in SCADA Systems (2)
Thinking About Security Considerations in SCADA Systems - Part 2 (photo by scadalink.com) Continued from previous part: Thinking About Security Considerations in SCADA Systems (1) SCADA ThreatsIn this...
View ArticleClik here to view.
Surge protective categories defined by ANSI/IEEE C62.41
Surge protective categories defined by ANSI/IEEE C62.41 (on photo: New VPU surge voltage protection devices from Weidmüller)ANSI/IEEE C62.41Three different surge protective classes or zones have been...
View ArticleClik here to view.
Voltage Distribution In a Suspension Insulator Strain
Voltage Distribution In a Suspension Insulator Strain1. IntroductionA suspension insulator strain consists of a series of alternately insulators and metal parts, which bind each insulator to the next....
View ArticleClik here to view.
A Few Words About Battery Hazards and Why They Happen
A Few Words About Battery Hazards and Why They Happen (photo by infrastructureemily.com)Safe Operation of BatteriesBecause batteries store large amounts of energy, there are certain hazards that are...
View ArticleClik here to view.
Keeping Motor At Correct Temperature When Connected To a Frequency Converter
Keeping Motor At Correct Temperature When Connected To a Frequency Converter (photo by Yaconto LLC.)Two types of influenceWhen a motor is connected to a frequency converter it must be kept at the...
View ArticleClik here to view.
Development of a Sine-Wave Output In AC Generator
Development of a Sine-Wave Output In AC Generator (on photo: Westinghouse Ac Generator)AC GeneratorThe elementary AC generator (Figure 1) consists of a conductor, or loop of wire in a magnetic field...
View ArticleClik here to view.
What is the rewind scenario if a motor fails?
What is the rewind scenario if a motor fails? (photo by electricmotorsales.co.uk)Increasing Motor EfficencyUnlike an initial motor purchase where your decision is limited to procuring a standard versus...
View ArticleClik here to view.
Calculation Example of Small Photovoltaic (PV) Residential Stand-Alone System
2kW Solar PV Array on Campus Crossings at Briarcliff (photo by Soenso Energy)Example- Array Size: 10, 12-volt, 51-watt modules; Isc= 3.25 amps, Voc= 20.7 volts - Batteries: 800 amp-hours at 12 volts -...
View ArticleClik here to view.
NEC Branch Circuit Requirements
NEC Branch Circuit Requirements (photo by Moosicorn via Flickr)National Electrical Code (NEC 2012)The National Electrical Code (NEC 2012) provides guidance for electrical contractors and electricians,...
View ArticleClik here to view.
Commissioning of HV Panel – Operational and Functional Checkup
Commissioning of HV Panel - Operational and Functional Checkup (on photo Macmillan – New High Voltage Panel by Skilz Building Solutions)Main ObjectiveThe main objective of the test is to check the...
View ArticleClik here to view.
Micro Hydro Power Plant With Automatic Frequency and Excitation Control
Micro Hydro Power Plant With Automatic Frequency and Excitation ControlIntroductionFirst of all, I am very glad to say that our project was successful. It is hydro power plant which was completed...
View ArticleClik here to view.
Selection Of Crane Duty Motors (Part 1)
Selection Of Crane Duty Motors (Photo By polyglot via Flickr)IntroductionThe operating conditions such as duty cycle, startup, temperature and operating environment are vital considerations in the...
View ArticleClik here to view.
Selection Of Crane Duty Motors (Part 2)
Selection Of Crane Duty Motors (on photo: Electric wire rope hoist for LNG (liquified natural gas) - STAHL CraneSystems GmbH by DirectIndustry) Continued from first part: Selection Of Crane Duty Motors...
View Article
