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Inspection and Test Procedures for LV Cables
Inspection and Test Procedures for LV CablesContentVisual and Mechanical InspectionElectrical TestsTest ValuesTABLE 100.12 – US Standard Fasteners – Bolt-Torque Values for Electrical...
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How to Predict Life Span of the Switchgear?
How to Predict Life Span of the Switchgear? (photo by Milos Diskovic)Load and Number of Switching CyclesThe life span of switchgear basically depends on the size of the load and the number of...
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The Purpose Of Transformer Gas Relay
The Purpose Of Transformer Gas Relay (on photo: Gas actuated relay for oil-filled transformers by Cedaspe S.p.a.)IntroductionThe transformer gas relay is a protective device installed on the top of...
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Arrangements of LV Utility Distribution Networks (1)
Arrangements of LV Utility Distribution Networks (photo credit to abbmvit.blogspot.com)IntroductionIn European countries the standard 3-phase 4-wire distribution voltage level is 230/400 V. Many...
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Arrangements of LV Utility Distribution Networks (2)
Arrangements of LV Utility Distribution Networks (photo by Steve Ives @ Flickr: Street in Haddington, Philadelphia, PA, US) Continued from the previous part: Arrangements of LV Utility Distribution...
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Definition of Basic Insulation Level (BIL)
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Classes, Speed Control and Starting of DC motors
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How Power Transformer Produces Acoustical Noise?
How power transformer produces acoustical noise? (on photo dry type transformer by Megawatt)Why does a transformer make noise?This technical article explains the acoustic noise generating mechanism...
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Basic Mechanical Terms used in Drives Applications
Basic Mechanical Terms used in Drives Applications (on photo: Rotor bandaging machine for DC drives)IndexTerms below are the basic mechanical terms associated with the mechanics of DC drive operation....
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Lighting Circuits Connections for Interior Electrical Installations
Lighting Circuits Connections for Interior Electrical InstallationsIntroductionElectrical lines which include lighting circuits begin from the main distribution panel of the installation and each line...
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Methods of Controlling Lightning Overvoltages in HV
Hubbell's improved protecta-lite transmission line arrester line has been simplified with fewer parts and less risk of parts wearing out. Several steel plated components were replaced with one copper...
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How Distribution Systems Control Customer Loads?
How Distribution Systems Control Customer Loads? (on photo: Control Room of Power Distribution Utility)Distribution SystemsDistribution systems obviously exist to supply electricity to end users, so...
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The Role of Fuse in Low Voltage Systems
The Role of Fuses in Low Voltage Systems (on photo: ETI low voltage fuse-links)Introduction to FusesA fuse is the very important protective device used to automatically disconnect a live circuit when...
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21 Safety Rules for Working with Electrical Equipment
21 Safety Rules for Working with Electrical Equipment A safe work environment is not always enough to control all potential electrical hazards. You must be very cautious and work safely. Safety rules...
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Rogowski Coil Construction
Rogowski Coils For Precision Measurements and Protection Figure 1 shows the construction of a Rogowski coil, an air-core current transformer that is especially well suited to measuring ripple currents...
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Power Line Carrier Communication (PLCC)
Power Line Carrier Communication - PLCC (photo: Zanith Transformers & Swithgears Pvt. Ltd)Content IntroductionMajor goal/Application of PLCCMain Components of PLCC:Coupling CapacitorLine trap...
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Enhance Grid Reliability With Hybrid HVDC Breaker
The Hybrid HVDC Breaker by ABB - The hybrid design has negligible conduction losses, while preserving ultra-fast current interruption capability.ContentIntroduction to HHVDCHow does Hybrid HVDC...
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Using Protective Relay For Fighting Against Faults
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The Good Old Electromechanical Protective Relay
The Good Old Electromechanical Protective Relay (on photo: GE's first innovation is this induction disk electromechanical protection relay. They've come a long way since 1910 - by MEDI Ontario @...
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The Solid State Relay (Static Relay) Overview
The Solid State Relay (Static Relay) Overview (on photo: Basler Electric BE1-27 Solid State Protective Relay, Over/Under Voltage)History of RelayThe static relay is the next generation relay after...
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