Analysis of pole-mounted MV/LV transformer grounding
Let’s discuss in some detail the reasons for the grounding philosophy adopted for pole-mounted MV/LV transformer substations illustrated in Figure 0. Contents: LV grounding MV grounding Combined MV/LV grounding Separate… Read more
Sep 23, 2015 | By Edvard Csanyi
Substation DC Auxiliary Supply – Battery And Charger Applications
A power substation can have one or several DC systems. Factors affecting the number of systems are the need for more than one voltage level and the need for duplicating… Read more
Sep 21, 2015 | By Edvard Csanyi
Voltage Drop Calculations For Engineers – Beginners
Voltage drop calculations using the DC-resistance formula are not always accurate for AC circuits, especially for those with a less-than-unity power factor or for those that use conductors larger than 2… Read more
Sep 19, 2015 | By Edvard Csanyi
Guidelines To Residential Room Lighting
Architects of development houses usually select the locations for switches, receptacles, and luminaires at a quality and price level determined by the builder. However, purchasers of architect-designed, custom-built homes usually… Read more
Sep 18, 2015 | By Edvard Csanyi
4 Factors To Consider When Selecting a Sectionalizer
Sectionalizers are (beside overcurrent relays, reclosers and fuses) one of the most used for distribution system protection. A sectionalizer is a device that automatically isolates faulted sections of a distribution… Read more
Sep 16, 2015 | By Edvard Csanyi
6 Customer Requirements For a Generator Regarding Power Demand
To select an on-site engine/generator sets (gensets), you’ll need to determine the power demand requirements which must be met under operating conditions, of course. Let’s talk about six recognized customer genset… Read more
Sep 12, 2015 | By Edvard Csanyi
5 Steps To Safely Shutdown a Large Generator
Normally, units are removed from service through operator initiation of distributed control system (DCS) commands or turbine trip buttons that shutdown the prime mover. Closure of steam or fuel valves… Read more
Sep 11, 2015 | By Edvard Csanyi
The Basics of Electrical Bus Protections
When we examine electrical protection schemes, the best place to start is with electrical bus protections, as they are the easiest to protect. They utilize the fundamental concept of the overcurrent relay (Figure 1)…. Read more
Sep 05, 2015 | By Edvard Csanyi
Can you really reduce kVA billing after installing power capacitors?
This technical article I dedicate to stubborn factory owners who still don’t believe and don’t want to spend the money on optimizing the factory costs. Not all of them are… Read more
Sep 04, 2015 | By Edvard Csanyi
19 Essential Information You Can Find On Motor Nameplate
Motor nameplate is normally located on all produced electric motors. Understanding nameplate information can be hard sometimes, but is essential. In most countries it is a requirement for manufacturers to… Read more
Aug 29, 2015 | By Edvard Csanyi
Electrical Design Project Of a Small Bakery
A small bakery with just a counter and storage areas is simple to design. The electrical design follows the layout for a house, but care must be taken on loading factors if… Read more
Aug 26, 2015 | By Edvard Csanyi
Things About MCBs That Every Low Voltage Electrician Should Know
Miniature circuit breaker – MCB is a thermo-magnetic device, meaning that it has two methods of circuit interruption. A thermal mechanism, usually a bi-metallic strip, provides protection against moderate overcurrent…. Read more
Aug 22, 2015 | By Edvard Csanyi
Kirchhoff’s Laws For Electrical Engineers – Beginners
Two extremely important principles in electric circuits were codified by Gustav Robert Kirchhoff in the year 1847, known as Kirchhoff’s Laws. His two laws refer to Voltages and Currents in… Read more
Aug 19, 2015 | By Edvard Csanyi
10 Common Causes Of Arc-Flash and Other Electrical Accidents
The most common cause of Arc Flash and other electrical accidents is carelessness. No matter how well a person may be trained, distractions, weariness, pressure to restore power, or overconfidence… Read more
Aug 10, 2015 | By Edvard Csanyi
What parallel redundancy does to the power distribution system?
Redundancy is a useful method of increasing reliability and optimising the balance between operation effectiveness and expenditure. In the context of reliability, redundancy signifies that a system will continue to… Read more
Aug 07, 2015 | By Edvard Csanyi