Equipment Used To Implement Automatic Transfer System (ATS)
Although the basic operational requirements of any automatic transfer system are as given in this technical article, the equipment which is used to implement the automatic transfer system can vary…. Read more
Jun 01, 2016 | By Edvard Csanyi
General Requirements For Operation and Maintenance Of Battery Cells
Primary battery cells cannot be recharged and once their energy is depleted they should be disposed off in the manner recommended by the manufacturer. The cells should be examined occasionally… Read more
May 11, 2016 | By Edvard Csanyi
A few tips on how to select contactors for use in direct on line starters
Contactors for use in direct on line starters (DOL) are normally selected by their AC3 rating, that is the switching on of a cage type induction motor and switching off… Read more
May 09, 2016 | By Edvard Csanyi
Differential protection – Proven technique for more than 50 years
The best protection technique now and for more than 50 years is that known as differential protection. Here the electrical quantities entering and leaving the protected zone or area are… Read more
May 02, 2016 | By Edvard Csanyi
Superposition Theorem Used To Solve The Simple Network
Using Superposition theorem, find the current through the 2Ω resistor of the network of Figure 1 above. The presence of three sources will result in three different networks to be… Read more
Apr 30, 2016 | By Edvard Csanyi
Features of 3 circuit protection devices (MCB, RCCB and RCBO) you have probably forgotten
Traditionally, fuses were the main devices chosen for final circuit protection, up until the 1970’s when circuit breaker technology started to become dominant. Today, the three principle circuit protection devices… Read more
Apr 25, 2016 | By Edvard Csanyi
Electric Circuits? It’s All About Nodes, Branches, and Loops
Since the elements of an electric circuit can be interconnected in several ways, we need to understand some basic concepts of network topology. To differentiate between a circuit and a… Read more
Apr 23, 2016 | By Edvard Csanyi
What Would Be The Worst Type Of Three Phase Faults (And Why It Happens)
In a three phase power system, the type of faults that can occur are classified by the combination of conductors or buses that are faulted together. In addition, faults may… Read more
Apr 22, 2016 | By Edvard Csanyi
3 Designs of DC Distribution Systems In Power Substations
The method of connection of the battery, battery charger, and DC distribution systems depends on the duty, the type or load, and whether the system needs to be duplicated or… Read more
Apr 20, 2016 | By Edvard Csanyi
You can use water pipes for grounding purposes, but…
Water pipes have been used extensively in the past as a grounding electrode. Water pipe connections are not testable and are unreliable due to the use of tar coatings and… Read more
Apr 16, 2016 | By Edvard Csanyi
Why do we care so much about power factor correction?
Power factor, as every electrical engineer should know, is defined as the ratio of real power to volt-amperes and is the cosine of the phase angle between the voltage and current in… Read more
Apr 15, 2016 | By Edvard Csanyi
AC versus DC. Those were the days…
Take warning! Alternating currents are dangerous. They are fit only for powering the electric chair :) The only similarity between an AC and a DC lighting system is that they… Read more
Apr 13, 2016 | By Edvard Csanyi
What would be the best conductor material for electrical wires and cables
The conductivity of copper is 65% higher than that of aluminium which means that the conductor size of similarly rated cables is proportionately smaller. Correspondingly less expense is then incurred… Read more
Apr 09, 2016 | By Edvard Csanyi
What Is The Energy, But For Real?
Energy is best defined as “the capacity for doing work”. Electricity is but one of many forms of energy. Other familiar forms of or descriptions of energy are thermal or… Read more
Apr 08, 2016 | By Edvard Csanyi
Power Measurement On Four-Wire System Using Wattmeter Methods
A four-wire system is suitable to supply unbalanced, three-phase loads or single phase loads distributed on all three phases of a low voltage installation. When measuring power on a three-phase… Read more
Apr 06, 2016 | By Edvard Csanyi