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Testing and Commissioning of Metal-Clad Switchgear
Distribution substation - 20/04kV MCset metal-clad switchgear (Schneider Electric) Electrical testing and commissioning of Metal-Clad switchgear is essential to the safe start for the first time,...
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Electrical Safety Standards for LV/MV/HV (Part-1)
Electrical Safety Standards for LV/MV/HV (on photo Indonesia's state energy giant - High Voltage Switchyard)ContentStandard: Western Power CompanyWater Safely Clearance on Electrical FiresMinimum...
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Electrical Safety Standards for LV/MV/HV (Part-2)
Electrical Safety Standards for LV/MV/HV part 2 (on photo Downtown LA distribution power lines; photo by Hal Bergman Photography @Flickr) Continued from part 1 – Electrical Safety Standards for...
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Electrical Safety Standards for LV/MV/HV (Part-3)
Electrical Safety Standards for LV/MV/HV part 3 (On photo transmission tower in India) Continued from part 2 – Electrical Safety Standards for LV/MV/HV (Part-2)ContentStandard: Northern Ireland...
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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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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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Medium Voltage Switchgear (1) – Basics of Switching Devices
Medium Voltage Switchgear (1) – Basics of Switching DevicesIntroduction to Medium VoltageAccording to international rules, there are only two voltage levels:Low voltage: up to and including 1kV AC (or...
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Medium Voltage Switchgear (2) – Selection of Switching Devices
Medium Voltage Switchgear (2) – Selection of Switching Devices Continued from first part: Medium Voltage Switchgear (1) – Basics of Switching Devices 3. Selection of Switching Devices Switching...
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Things You Should Know About Medium Voltage GIS
Things you should know about MV GIS (Medium Voltage Gas Insulated Switchgear) - photo by ormazabal.comContent Environmental ConcernsSafety ConcernsSpecial Handling ProceduresInstallation...
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MCset – Air Insulated Switchgear with SF6 CB
MCset Air Insulated Switchgear with SF6 CB (up to 24kV)General about MCsetMCset is Schneider Electric‘s AIS – Air Insulated Switchgear (indoor metal-enclosed device) intended for the MV section of...
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Special Transformers for Industrial Applications
Special Transformers for Industrial ApplicationsSpecific Industrial TransformersA number of industry applications require specific industrial transformers due to the usage of power (current) as a major...
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Field Inspection and Testing of Medium-Voltage Motor Control Centres (MCCs)
Field Inspection and Testing of Medium-Voltage Motor Control Centres - MCCs (Photo by Arrow Speed Controls; arrowspeed.com // MX3 Medium Voltage Solid State Soft-Starter)Equipment and Installation...
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Example of MV/LV network structure with dual fed main MV switchboard
MV dual fed switchboard with 2/3 type transfer Connected to article: Example of standard MV/LV network structure Network structure:MV consumer substation; The main MV switchboard can be backed up by a...
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MV Circuit Breaker Or Vacuum Contactor? (Part 1)
Left – Vacuum Contactor 6kV 400A; Right – 12 kV, 40 kA Indoor Vacuum Circuit BreakerApplication considerationsTo compare the application of medium-voltage circuit breakers and of fused contactors, we...
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MV Circuit Breaker Or Vacuum Contactor? (Part 2)
MV Circuit Breaker Or Vacuum Contactor? PART 2 (on photo: SIEMENS’s Sion vacuum circuit-breaker is designed for use in all common types of medium-voltage switchgear) Continued from first part: MV...
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The role of medium voltage switchgear in power system
The role of medium voltage switchgear in power system by SIEMENSIntroductionAccording to international rules, there are only two voltage levels:Low voltage: up to and including 1 kV AC (or 1,500 V...
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Microprocessor and conventional secondary systems compared
Microprocessor and conventional secondary systems compared (on photo: ABB’s Unigear 11kV switchgear panels)Reliable operation of the primary systemSecondary systems are all those facilities needed to...
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Rating Definitions Applied to Medium Voltage Circuit Breaker
Rating Definitions Applied to Medium Voltage Circuit Breaker (on photo: SQUARE D medium voltage circuit breaker 15kV 1200A)MV protection applicationsThe medium voltage circuit breaker is the device of...
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Rating Definitions Applied to Medium Voltage Fuses
Rating Definitions Applied to Medium Voltage Fuses (on photo: SOLEFUSE 20kV, via cvmerdekajayateknik.itrademarket.com)Greater than 2400V and less than 69kVThe definition of low voltage fuses is equally...
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