Transformer winding resistance is very important factor for the life of any transformer, this test is part of type tests, routine tests and field tests. The purpose of winding resistance test is to determine the following: Calculation of the I2R losses in transformer. Calculation of winding temperature at the end of temperature rise test of transformer. As a benchmark… Read More »
On this page you can find permissible limits for different equipment’s which are part of a power distribution electrical substation. Also where available reference to the international standard is also available in last column. Typical values are provided for transformers, reactors, circuit beakers, current transformers, capacitors, isolators, surge arrestors, batteries and other miscellaneous equipment’s. 1.… Read More »
What Are Cable Trays? An assembly of units/sections with associated fittings that form a rigid structural system to securely fasten or support cables. Think of a roadway bridge that supports traffic. Cable Tray Systems must provide protection to life & property against faults caused by electrical disturbances Lighting and failures which are part of the… Read More »
Installation of capacitor bank shall be carried out in accordance to project specifications and approved drawings and technical submittals etc. Installation will be carried out by skilled and suitably experienced electricians under supervision of highly competent site supervisors and engineers to ensure the correctness and quality of the work. Prior to dispatch of capacitor bank equipment,… Read More »
At the stage of receiving the cables at project site, inspect the protective covering on the cable for evidence of shipment damage. Leave the factory-applied protective cover in place until removal is absolutely necessary. Where possible, check the copper sheath for evidence of shipment damage. When cable drums are unloaded in designated area, provide wooden… Read More »
Insulator Definition: Electric insulators are substances through which electric current cannot pass easily like glass, mica, dry air and Bakelite etc. Similarly materials which resist the transfer of heat are called thermal insulators like wood, glass wool, rubber etc. The materials which have very high resistivity i.e. offers a very high resistance to the flow… Read More »