Transformers
12 Main Classes Of Power Transformer
Transformers are used for a wide variety of purposes, with the complete range of voltage and power ratings as well as many special features for particular applications. The following covers the main types: Transformers for electronic circuits or for low-voltage… Read more
Jan 08, 2012 | By Edvard Csanyi
Electric Motor
How to select AC converter for VSD?
Altough manufacturers’ catalogues try to make it easy as possible, there are many variables associated with the selection and rating of the optimum electric motor and AC converter for a Variable Speed Drive (VSD) application. In many cases, it requires… Read more
Jan 06, 2012 | By Edvard Csanyi
Energy and Power
Voltage and Current Phase Relationships in an Inductive Circuit
Any change in current in a coil (either a rise or a fall) causes a corresponding change of the magnetic flux around the coil. Because the current changes at its maximum rate when it is going through its zero value… Read more
Jan 05, 2012 | By Edvard Csanyi
Renewable Energy
Photovoltaic End-Use Application Markets
Photovoltaic markets can be classified based on the end-use application of the technology. The most common PV projects are off-grid applications. Water pumping also represents an important application of PV, particularly in developing countries. The largest long-term market potential for… Read more
Jan 04, 2012 | By Edvard Csanyi
Medium Voltage
ABB MV Switchgear – Single Busbar Or Double Busbar?
Most switchgear installations used in industry with normal service conditions are based on single busbar arrangements. Compared to double busbar switchgear, single busbar switchgear is definitely easier to use, readily understood by operators, requires less space, and the total cost of installation… Read more
Jan 03, 2012 | By Edvard Csanyi
Energy and Power
The Need for Breaker Failure Protection
Circuit breakers are strategically located in power systems to connect circuits and electrical apparatus. Circuit breakers are commanded to open and close by protection and control systems that monitor conditions on the power system. Protection systems are coordinated so that… Read more
Jan 01, 2012 | By Edvard Csanyi
