Electrical Lectures
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
Energy and Power
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
Energy and Power
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
Electric Motor
Two Basic Methods Used For Braking a Motor (DC Injection and Dynamic)
Two common basic methods used for braking a motor are DC injection braking and dynamic braking. We will look at both in detail, starting with electric braking. DC Injection Braking… Read more
Apr 18, 2016 | By Edvard
Energy and Power
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
Electrical Lectures
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
Electrical Lectures
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
Power Quality
5 anomalies in AC power that can damage your home devices
In addition to lightning, there are a number of other disturbances that can come in on the AC power lines and damage equipment. Some surge protectors can reduce or eliminate… Read more
Apr 11, 2016 | By Edvard
Energy and Power
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
Electrical Lectures
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
Energy and Power
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
Energy and Power
The basics of selectivity (discrimination) between circuit breakers
On economical grounds and for the reason of reliability of the service, it is not always ideal to interrupt the supply to the installation in the case of a fault… Read more
Apr 04, 2016 | By Edvard
Energy and Power
Six core activities in the commissioning of the earthing system
Commissioning of new earthing system is essential as a validation step for the design and installation process and for the design inputs. In most cases commissioning should measure the outputs… Read more
Apr 02, 2016 | By Edvard
Industrial Automation
This is why every industrial plant MUST have an alarm system (for monitoring processes)
In industrial plants and installations, control systems are used to monitor and control processes. Control Systems, whether a conventional Control Desk or a Computer/PLCs System with SCADA or a Distributed… Read more
Apr 01, 2016 | By Edvard
Maintenance
How to better understand transformer failures and maintenance necessity
Generally speaking, the transformer requires less care compared to other electrical equipment. But, as I already stated in some of the earlier technical articles, transformer failures can cause a huge… Read more
Mar 30, 2016 | By Edvard
