Substation DC Auxiliary Supply – Battery And Charger Applications

Power substation can have one or several DC systems. Factors affecting the number of systems are the need of more than one voltage level and the need of duplicating systems…. Read more

Sep 21, 2015 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard