Switching Impulse Test of the Transformer
The switching impulse test is applied to confirm the withstand of the transformer’s insulation against excessive voltages occurring during switching. During the switching impulse voltage test, the insulation between windings… Read more
Oct 11, 2012 | By Edvard Csanyi
Fire-Fighting Precautions in Power Substation
The layout of the plant and the design of the building play a major part in reducing the spread of fire and the effect of explosions. For example, equipment and… Read more
Oct 09, 2012 | By Edvard Csanyi
Designing of HV Power Substation and Layout
Introduction Earthing and Bonding Substation Earthing Calculation Methodology (Earthing Materials) Layout of Substation Different Layouts for Substations (single busbar, mesh, 1 1/2 cb) Principle of Substation Layouts (spatial separation, maintenance zones) Components of… Read more
Oct 01, 2012 | By sprabakar22
Transformers Connected Directly to Generators
Power transformers connected directly to generators can experience excitation and short-circuit conditions beyond the requirements defined by ANSI/IEEE standards. Special design considerations may be necessary to ensure that a power transformer… Read more
Sep 01, 2012 | By Edvard Csanyi
Site Conditions Impact on Caterpillar Genset Ratings
An engine rating is primarily limited by structural and thermal limits. These limits include maximum cylinder pressure during combustion, turbocharger speed, exhaust gas temperature and in natural gas engines, fuel type. Where an… Read more
Aug 17, 2012 | By Edvard Csanyi
Bus Design In Aboveground Substations
Substations can be constructed partly or entirely within aboveground or belowground enclosures. However, cost is high and complexity is increased by fire-protection and heat-removal needs. The following discussion deals with… Read more
Jul 21, 2012 | By Edvard Csanyi
Field Inspection of New Medium-Voltage Switchgear
Step Description of what you should do 1.1 Check switchgear assembly for alignment, levelness, and tightness of all bolting. 1.2 Check all equipment for the removal of blocking, supports, temporary… Read more
Jul 16, 2012 | By Edvard Csanyi
Typical noise levels in power substation
Equipment noise levels may be obtained from manufacturers, equipment tendering documents, or test results. The noise level of a substation power transformer is a function of the MVA and BIL… Read more
Jul 05, 2012 | By Edvard Csanyi
Assemblies of switchgear and control panels (3)
Continued from 2nd part of article: Assemblies of switchgear and control panels (part 2) Now coverage of distribution panels and switchboards will be presented including molded case circuit breakers (MCCB), safety… Read more
Jun 30, 2012 | By Edvard Csanyi
Assemblies of switchgear and control panels (2)
Continued from 1st part of article: Assemblies of switchgear and control panels (part 1) Other components that are needed for the proper operation of the switchgear or control panel but not necessarily… Read more
Jun 29, 2012 | By Edvard Csanyi
Assemblies of switchgear and control panels
Switchgear and control panels are found in power generating stations, transformer stations, distribution substations, commercial and institutional buildings, industrial plants and factories, refineries, paper mills, metal smelters and any other… Read more
Jun 28, 2012 | By Edvard Csanyi
Substation Switching Schemes
This technical article is intended to provide description and comparison of single line options for a DESN substation. The goal is to provide an analytical comparison for all options so… Read more
Jun 26, 2012 | By Edvard Csanyi
Commissioning of Electrical Equipment
To verify system condition after has been energized with rated system (service) voltage for which it is designed. Also to ensure the protection, metering system for correct directionality. Multimeter Phase… Read more
Jun 25, 2012 | By Edvard Csanyi
Transformer Connection Star-Star
The windings of three phase transformers may be connected in by Y or Δ in the same manner as for three single phase transformer. Since the secondary’s may be connected either… Read more
May 23, 2012 | By jiguparmar
Bus Switching Configurations In Air Insulated Substations (AIS)
Various factors affect the reliability of a substation, one of which is the arrangement of the switching devices. Arrangement of the switching devices will impact maintenance, protection, initial substation development,… Read more
May 05, 2012 | By Edvard Csanyi