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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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Few Words About Digital Protection Relay
Few Words About Digital Protection Relay (on photo: Siprotec microprocessor based protective relay)History of Protective RelayAround 1980s the digital relay entered the market. Compared to the Solid...
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Flexibility and Reliability of Numerical Protection Relay
Flexibility and Reliability of Numerical Protection Relay (on photo: ABB's numerical relay type SPAD 330 C designed to be used as a fast interwinding short-circuit and interturn fault protection for...
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Differences Between Earthed and Unearthed Cables
Differences Between Earthed and Unearthed CablesIntroductionIn HT electrical distribution, the system can be earthed or unearthed.The selection of unearthed or earthed cable depends on distribution...
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Comparison of Protection Relay Types
Comparison of Protection Relay Types (photo by switchgearsupport.com) Comparison TableThis comparison summarize characteristics of all protection relay types described in previously published...
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Types and Applications Of Overcurrent Relay (part 1)
Types, applications and connections of Overcurrent relay (on photo: Transmission lines from Gillam to Churchill)Index Types of protection:Unit Type ProtectionNon-unit schemesOvercurrent...
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Connections Of Overcurrent Relay (part 2)
Connections Of Overcurrent Relay (part 2) Continued from first part: Types and Applications Of Overcurrent Relay (part 1) Connections of Overcurrent and Earth Fault Relays1. 3 Nos O/C relay for...
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Defining Size and Location of Capacitor in Electrical System (1)
Defining Size and Location of Capacitor in Electrical System (1)Content Type of Capacitor Bank as per Its Application:Fixed type capacitor banksAutomatic type capacitor banksTypes of APFC – Automatic...
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Defining Size and Location of Capacitor in Electrical System (2)
Defining Size and Location of Capacitor in Electrical System (2) Continued from part 1: Defining Size and Location of Capacitor in Electrical System (2) Content Size of circuit breaker (CB), fuse and...
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How to Determine Correct Number of Earthing Electrodes (Strips, Plates and...
How to Determine Correct Number of Earthing Electrodes (Strips, Plates and Pipes) - part 1IntroductionNumber of Earthing Electrode and Earthing Resistance depends on the resistivity of soil and time...
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How to Determine Correct Number of Earthing Electrodes (Strips, Plates and...
Installation of vertical electrodes of earthing Continued from first part: How to Determine Correct Number of Earthing Electrodes (Strips, Plates and Pipes) – part 1 2. Calculate Number of Plate...
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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,...
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Total Losses in Power Distribution and Transmission Lines (1)
Total Losses in Power Distribution and Transmission Lines (on photo: Power sunset over Kampala City, Uganda)IntroductionPower generated in power stations pass through large and complex networks like...
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Electrical Thumb Rules You MUST Follow (Part 1)
Electrical Thumb Rules You MUST Follow (Part 1)Electrical Thumb Rules For:Cable CapacityCurrent Capacity of EquipmentEarthing ResistanceMinimum Bending RadiusInsulation ResistanceLighting...
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Electrical Thumb Rules You MUST Follow (Part 2)
Electrical Thumb Rules You MUST Follow // PART 2 (on photo: Osprey Lunch Among The Electrical Wires! by Kathleen Jackson via Flickr) Continued from first part: Electrical Thumb Rules You MUST Follow...
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Electrical Thumb Rules You MUST Follow (Part 3)
Electrical Thumb Rules You MUST Follow (photo by megstewart via Flickr) Continued from second part: Electrical Thumb Rules You MUST Follow (Part 2) Size of Capacitor for Power Factor CorrectionFor...
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Sizing The DOL Motor Starter Parts (Contactor, Fuse, Circuit Breaker and...
Sizing The DOL Motor Starter Parts (Contactor, Fuse, Circuit Breaker and Thermal Overload Relay) Calculate size of each part of DOL motor starter for the system voltage 415V, 5HP three phase house hold...
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Electrical Thumb Rules You MUST Follow (Part 4)
Electrical Thumb Rules You MUST Follow - part 4 (on photo: distribution substation bus on a clear night in February by Eli Nelson) at Flickr Continued from: Electrical Thumb Rules You MUST Follow (Part...
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Electrical Thumb Rules You MUST Follow (Part 5)
Electrical Thumb Rules You MUST Follow, part 5 (photo by engineeringourfreedom.blogspot.com) Continued from: Electrical Thumb Rules You MUST Follow (Part 4) Eight rules to follow:Standard Size of...
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Electrical Thumb Rules You MUST Follow (Part 6)
Electrical Thumb Rules You MUST Follow, Part 6 (On photo: View in the Transformer Room in the underground area during White House renovation on March 26, 1952 - via trumanlibrary.org) Continued from:...
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