19th November 2009
When purchasing a transformer, several factors must be evaluated carefully to ensure that the correct choice is made. One question that is frequently asked by those investing in this technology is whether it is best to opt for round, rectangular or disc...
26th October 2009
As fuel costs rise and power outages become more prevalent around the country, the power generation and distribution system in the US has come into sharp focus. So too has the need to conserve energy and the need to invest in energy-efficien...
02nd October 2009
Transformers under load generate heat due to winding (copper) and core losses occurring during operation. There is an 'acceptable' temperature rise for transformers used in power applications, and this can even limit their size. This acceptable temperatur...
17th September 2009
It's a challenge that is now common to many utilities in the US: managing aging substation transformers installed in the 1960s and 1970s and fast approaching the end of their 'life'. These transformers didn't cause a blip in the radar during the last tw...
17th September 2009
In order to maximize the lifetime and efficacy of a transformer, it is important to be
aware of possible faults that may occur and to know how to catch them early. Regular
monitoring and maintenance can make it possible to detect new flaws before ...
07th September 2009
Grounding is clearly one of the most important aspects of electrical design, but it steadfastly continues to be misinterpreted and misunderstood. Millions of dollars in liability and loss can be attributed to ground-fault arcing; thus, grounding-related i...
07th September 2009
In the rush to cash-in on wind energy, developers are often trading low first costs for higher total costs of
This head long rush to install more and more wind turbines has outstripped the usual developmental learning curve, where new technologies matur...
07th August 2009
Testing of transformer is done to determine their electrical, thermal and mechanical suitability for the system where they will be applied or used. Most of the tests performed on power transformers are defined in national standards created by IEEE, NEMA a...
17th June 2009
When choosing a transformer, there are two primary concerns: the load and the application. Several factors must be evaluated carefully while making the choice, to ensure that the needs of both primary concerns are met.
To use a cliché, it is typicall...
17th June 2009
Grounding transformers (GT) differ from "standard distribution transformers" (DT) because they are used to establish a return path for ground fault currents on a system which is otherwise isolated or effectively un-grounded. This differentiates the constr...
