Considerations to take into account when designing PLC ladder logic
Motor control circuits are often implemented using ladder logic. It is so called because the schematic representation of the control circuit resembles a ladder with two vertical rails and a… Read more
Jan 18, 2017 | By Edvard Csanyi
Fundamentals Of Electrical And Computer Engineering
Electrical and Computer Engineering (ECE) is a profession that integrates several sub-disciplines including analog and digital circuits and devices, signal processing, communication systems, computer architecture and networking, micro and nanodevices,… Read more
Dec 27, 2016 | By Edvard Csanyi
Electrical machines and appliances theory for engineers beginners
A length of wire lying in the magnetic field and in which an EMF is induced is called a coil. The coils used in windings are shown in Figure 1…. Read more
Dec 11, 2016 | By Edvard Csanyi
Installation tips for prefabricated busbar systems and cables
The term installation configuration, when applied to prefabricated busbar systems and cables – power transport and power distribution in the installation, essentially refers to the geometric requirements of the conductor… Read more
Nov 14, 2016 | By Edvard Csanyi
Line harmonic currents created by adjustable frequency control
Nonlinear loads like adjustable frequency controls create line harmonics when connected to the AC power distribution system. These harmonic currents are a result of non-sinusoidal current, which is a characteristic of all… Read more
Nov 05, 2016 | By Edvard Csanyi
Five key factors to the correct cable selection and application
It is essential to know cable construction, characteristics, and ratings to understand problems related to cable systems. However, to correctly select a cable system and assure its satisfactory operation, additional… Read more
Oct 31, 2016 | By Edvard Csanyi
Aluminium or copper busbar trunking system? What do you say?
These two materials (aluminium and copper) are both physically and economically viable for use as conductors in power busbar trunking systems (BTS). Some manufacturers of busbar trunking systems offer a… Read more
Oct 17, 2016 | By Edvard Csanyi
Paralleling and ferroresonance as special problems with transformers
Occasionally, crews must install distribution transformers, either at a changeover or for extra capacity. If a larger bank is being installed to replace an existing unit, paralleling transformers during the… Read more
Oct 12, 2016 | By Edvard Csanyi
Best practice for using surge protective devices (SPDs) and RCD together
Where the power distribution system incorporates RCDs transient activity could cause RCDs to operate and hence loss of supply. Surge protective devices (SPDs) should wherever possible be installed upstream of… Read more
Oct 07, 2016 | By Edvard Csanyi
400 kV substation arrangement designs and their reliability comparison
The dependency on secure power is increasing in society which leads to higher demands on the availability of electric power. The availability can be defined as the fraction of time… Read more
Aug 24, 2016 | By Edvard Csanyi
Why busbar trunking system is a space saving solution worth every penny
As line distribution boards, busbar trunking system (BTS) also belongs to the group of switchgear assemblies documented in IEC 61439 (VDE 0660-600). Apart from the general requirements of IEC 61439-1… Read more
Aug 17, 2016 | By Edvard Csanyi
Electrical Design Project Of Sun’s Datacenter In Santa Clara, California
This technical article provides a top-to-bottom overview of Sun Microsystems’s Santa Clara, California datacenter from electrical design aspect. Sun’s electrical design tour of Santa Clara datacenter is done through a… Read more
Jul 01, 2016 | By Edvard Csanyi
Electrical design of energy efficient datacenters
A typical datacenter can easily lose 10 percent of its power in the power distribution system. Transformers, UPS, and distribution contribute to power loss. Using a number of the techniques… Read more
Jun 19, 2016 | By Edvard Csanyi
Where and Why Do We Use Grounding Transformer (zig-zag, grounded wye-delta)
Grounding transformers are sometimes used on distribution systems. A grounding transformer provides a source for zero sequence current. Sometimes they are used to convert a 3-wire, ungrounded circuit into a 4-wire, grounded circuit…. Read more
Jun 08, 2016 | By Edvard Csanyi
Where Do We Use Arc Suppression Coil (Petersen Coil)?
The arc suppression coil (ASC), also known as Petersen coil, is used to compensate the capacitive earth fault currents supplied by outgoing feeders at a substation. The compensation can be… Read more
Jun 06, 2016 | By Edvard Csanyi