Theorems and network reductions that every electrical engineer MUST know
Most practical power system problems are solved by using steady state analytical methods. These methods make the assumption that circuit parameters are linear, bilateral, and constant for constant frequency circuit variables. When analysing initial values,… Read more
May 06, 2019 | Edvard
Properly engineered and installed selective coordination between LV circuit breakers
It’s extremely important to work on selective coordination of circuit breakers in the design phase of a system. After switchboards, distribution panels, MCCs, lighting switchboards, etc. are installed, there typically is little that can be… Read more
Apr 10, 2019 | Edvard
Electrical design of healthcare facilities (essential system requirements)
Due to the critical nature of the care being provided at healthcare facilities and their increasing dependence on electrical equipment for preservation of life, they have special requirements for the design of their electrical distribution… Read more
Apr 01, 2019 | Edvard
Earthing facts and terms you should always remember
While working as an electrical engineer, there are a dozen things you must remember, especially the ones that concern the safety. Whether you are in the electrical design field or in execution, you must admit… Read more
Mar 04, 2019 | Edvard
5 most important aspects of external protection against the effects of lightning
Analysis of the lightning risk takes numerous factors into consideration. This article will shed the light on one of factors – protection of the structures and its five most important aspects: lightning conductors, electrogeometric model,… Read more
Feb 27, 2019 | Edvard
Where to start with design of electrical installation?
The power analysis must be always the at the very top of your tasks in design of an electrical installation. It will enable the source(s) to be sized according to the purpose of the installation,… Read more
Feb 11, 2019 | Edvard
The basic understanding of an earthing protection system (diagram and definitions)
As you already know, protective conductors are the main part of every earthing protection system, but the complexity of the system will increase with the requirements of information technology, voltage surge protection, local area networks,… Read more
Jan 16, 2019 | Edvard
How to determine compensation of reactive power of an electrical installation
Improving the power factor of an electrical installation (compensation of reactive power) has many economic and technical advantages, but it’s not always easy to do so. There are numerous approaches to do such job, so…...
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Jan 11, 2019 | Edvard
Well engineers, it’s about time… Happy New Year!
A short note from me today. I’d just like to wish you a very happy New Year on behalf of myself and everyone else at EEP. It’s been a long year with a lot of… Read more
Dec 31, 2018 | Edvard
15 bad situations that may lead to catastrophic explosion of a capacitor bank
Some of the failure problems associated with capacitor banks are already known, since they happen often. A few of the failures are traceable to the original source and sometimes that may be difficult to do…. Read more
Dec 23, 2018 | Edvard
The essence of LV circuit breakers – Releases, tripping curves, characteristics and limitation
A circuit breaker is both a circuit-breaking device that can make, withstand and break currents whose intensity is at most equal to its rated current (In), and a protection device that can automatically break overcurrents… Read more
Dec 17, 2018 | Edvard
The Essentials Of Current Transformers In Power Circuits (Theory and Practice)
If the voltage or current in a power circuit are too high to connect measuring instruments or relays directly, coupling is made through transformers. Such measuring transformers are required to produce a scaled down replica… Read more
Dec 03, 2018 | Edvard
10 unbalance detection schemes for removing failed capacitor bank from the system
The main purpose of an unbalance detection scheme is to remove a capacitor bank from the system in the event of a failure and fuse operation. This will prevent damaging overvoltages across the remaining capacitor… Read more
Nov 26, 2018 | Edvard
Neutral earthing systems of generator sets (gensets)
Generator sets have specific features that must be taken into account for protection against electric shocks. Mobile sets cannot be connected to earth and their connection by means of a flexible cable can be easily… Read more
Nov 08, 2018 | Edvard
Automatic bus transfer scheme in thermal and nuclear power stations
In order to ensure uninterrupted supply to connected loads in thermal and nuclear power stations, two types of automatic supply transfer schemes are normally used: automatic bus transfer scheme and auto-changeover scheme. This technical article… Read more
Oct 24, 2018 | Edvard
