Resources For Electrical & Electronic Engineers
A tap changer is a device fitted to power transformers for regulation of the output voltage to required levels. On-load tap-changers (OLTCs) are indispensable in regulating power transformers used in electrical energy networks and industrial applications. OLTC changer alters the turn ratios
The rated voltage ratio of the transformers at no load normally is specified at 50 Hz, this being related to the principal tapping of the transformer. Tapping shall be provided on the primary winding to provide a ratio variation of +7.5% and –2.5%
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
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
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
Below is given a brief method statement for Installation of Isolated Power Supply units or also called IPS Units. Pre installation requirements before commencing the installation work at site are: Operative to attend any site induction provided by the client. Check the