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Erection procedure for HV switchgear (Part 1)
Erection procedure for HV switchgear (on photo: 150KV GI Electrical Substation extension in Greece, Atherinolakos Crete by PARALOS Engineering S.A.)Important points 66kV/230kV GIS extension work...
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Erection procedure for HV switchgear (Part 2)
ABB Gas-insulated Switchgear ELK-04 Modular System up to 170 kV, 4000 A, 63 kA Continued from first part: Erection procedure for HV switchgear (Part 1) Positioning of cubicles Positioning of the...
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Selection of Induction Motors for Industrial Applications (part 1)
Selection of Induction Motors for Industrial Applications (photo by http://www.iecee.org)Introduction All types of industries are invariably required to install different types of electric motors as...
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Selection of Induction Motors for Industrial Applications (part 2)
Selection of Induction Motors for Industrial Applications (part 2) - photo by TCD Systems Continued from first part: Selection of Induction Motors for Industrial Applications (part 1) Design...
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Selection of Induction Motors for Industrial Applications (part 3)
Selection of Induction Motors for Industrial Applications (photo by ABB) Continued from first part: Selection of Induction Motors for Industrial Applications (part 2) Design Considerations...
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When a transformer has stomach pain and wants to…
Transformer windings forces due to the magnetic forces (photo by ALSTOM)About stomach painDuring normal operation, transformer internal structures and windings are subjected to mechanical forces due...
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Ferroresonance Occurrence In Power Transformer
Ferroresonance Occurrence In Power Transformer (photo by SNC Manufacturing Co. Inc.) Ferroresonance occurs when line capacitance resonates with the magnetizing reactance of a core while it goes in and...
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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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Switching contactor and effect of long control lines
Switching contactor and effect of long control linesVoltage drop In accordance with IEC 60947-4-1 and IEC 60947-5-1, the normal control voltage range of power and control contactors lies between 85 …...
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Requirements and Functions of Substation Automation
Requirements and Functions of Substation Automation (photo by psi-incontrol.com)IntroductionSubstation automation is the cutting edge technology in electrical engineering. It means having an...
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Erection Procedure for Power Transformer
Erection of power transformer (by Entel Energoprojekt in Abu Dhabi Distribution Company, 33KV & 11KV Network for Ghuzlan Island) This technical article deals with transformers and their...
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Are you concerned about your privacy in Smart Grid?
Are you concerned about your privacy in Smart Grid? Modernization of the grid will increase the level of personal information detail available as well as the instances of collection, use and...
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Transformer Routine Dielectric (Insulation) Test
Transformer Routine Dielectric (Insulation) Test (on photo: OSB laboratory of BEST Transformers)Insulation tests to be performedThe following insulation tests are performed in order to meet the...
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Condition Monitoring of Transformers
Condition Monitoring of Transformers (on photo: distributive tranformer; by Gazoogleheimer via Flickr )Detecting early signs of deteriorationIt is possible to provide transformers with measuring...
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7 reasons to fail with small hydro-power development
7 reasons to fail with small hydro-power developmentWhat to do to fail?The main reasons for lack of success with small water power development are:Failure to realize how important full field data is...
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Three phenomenons in the iron of AC machines
Three phenomenons in the iron of AC machinesMagnetic CircuitsMost of our practical AC machines (motors, generators ad transformers) depend heavily on the magnetic field for operation. The core iron of...
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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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High voltage testing – Direct current (DC)
High voltage testing - Direct current (DC) - Photo by www.powertechlabs.comDC TestsDC tests are used mainly to do “pressure tests” on high voltage cables. Although the cables operate with AC, AC...
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Transformer temperature, oil level and pressure gauges
Transformer oil level indicator Temperature controls are required in order to turn on and off the cooling equipment. These controls are usually combined with a visible dial-type gauge that measures...
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Glossary of Power Transformer Terms
Glossary of Power Transformer Terms (photo by radar.guy via Flickr) There are many terms associated with power and distributive transformers used in electrical networks. These are just some of the...
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