Power Substation
Defining size and location of capacitor in electrical system (1)
Type of Capacitor Bank as per Its Application: Fixed type capacitor banks Automatic type capacitor banks Types of APFC – Automatic Power Factor Correction Type of Capacitor as per Construction Selecting Size of Capacitor Bank Selection of Capacitor as per… Read more
Mar 04, 2016 | By Jignesh Parmar
Power Substation
Practical Considerations of LV/MV Private Substations
Private substations can often be considered as terminal type substations, i.e. substations where the MV line ends at the point of installation of the substation itself. They belong to the user and can supply both civil users (schools, hospitals, etc.)… Read more
Mar 04, 2016 | By Edvard Csanyi
Energy and Power
Things you MUST verify when designing low voltage switchgear
Low voltage switchgear and distribution boards form the link between the equipment for the generation (generators), transmission (cables, overhead lines) and transformation (transformers) of electrical energy on the one hand and the consumers, e.g. motors, solenoid valves, devices for heating,… Read more
Mar 02, 2016 | By Edvard Csanyi
Electric Motor
Regular Motor Maintenance To Avoid Failure (and Prolong Its Lifespan)
A well and carefully designed motor maintenance program, when correctly used, can be summed up as preventive maintenance, predictive maintenance and reactive maintenance. Inspection cycles depend upon the type of motor and the conditions under which it operates. Motors need… Read more
Feb 29, 2016 | By Edvard Csanyi
Energy and Power
The Basics Of Molded Case Circuit Breakers You MUST Know
Molded case circuit breakers are interrupting devices with self-contained, current-responsive elements. These breakers are assembled as an integral unit in a supported and enclosed housing of insulating material. Depending on the amount of protection required, these breakers can sense internally… Read more
Feb 27, 2016 | By Edvard Csanyi
Energy and Power
3 Common Misconceptions Regarding Automatic Transfer Systems
Several common misconceptions regarding automatic transfer systems exist. Three of these are addressed here // I need a complex automatic transfer scheme at every voltage level AC Control Power for my automatic transfer PLC can be handled by the system UPS’s… Read more
Feb 26, 2016 | By Edvard Csanyi
Energy and Power
How to determine the best location for earth electrode
A good, low-resistance earth electrode depends upon a low-resistivity soil in a spot where you can drive in your electrodes. There are two approaches to picking your location: Drive rods in various locations to such depths as may be required… Read more
Feb 24, 2016 | By Edvard Csanyi
Industrial Automation
What size of a frequency converter do I need? (4 methods to find out)
When determining the rating of a frequency converter at a given load the first step is to consider the load characteristics. There are four different methods for calculating the required output performance and the choice of method depends on the… Read more
Feb 22, 2016 | By Edvard Csanyi
Energy and Power
Practical Considerations Of Transformer Inrush Current
When a transformer is initially connected to a source of AC voltage, there may be a substantial surge of current through the primary winding called inrush current. This is analogous to the inrush current exhibited by an electric motor that is… Read more
Feb 20, 2016 | By Edvard Csanyi
Energy and Power
Why modern buildings MUST have energy metering and monitoring system
The first step to greater efficiency through energy metering and monitoring is to set objectives for the future system. Ideally, users of the system are involved in this process, and are given an opportunity to provide input on the main… Read more
Feb 19, 2016 | By Edvard Csanyi
Electrical Lectures
Reactive Power and Compensation Solution Basics For Students
The total power, the so-called apparent power, of a transmission network is composed of active and reactive power (Figure 1). While the power consumers connected into supply transform the active power into active energy, the reactive energy pertaining to the… Read more
Feb 17, 2016 | By Edvard Csanyi
Electric Motor
When a 3-phase motor expirience phase failure, what a mess…
A phase failure is an interruption of a single conductor. The motor then continues running with two phases and can suffer damage. The cause is, for example, blown fuse. Small to medium sized motors are mostly stator critical – this… Read more
Feb 15, 2016 | By Edvard Csanyi
Energy and Power
5 Means Of Identifying Grounded Conductors (By NEC 200 Article)
Latest NEC requirements state at least five means of identifying grounded conductors. So, let’s go through each of them // Sizes 6 AWG or smaller Sizes 4 AWG or larger Flexible cords Grounded conductors of different systems Grounded conductors of… Read more
Feb 13, 2016 | By Edvard Csanyi
Energy and Power
Arc Flash Hazard Calculation In 9 Steps Using IEEE 1584
The Institute of Electrical and Electronic Engineers (IEEE) published the IEEE 1584 “Guide for Performing Arc Flash Hazard Calculations”. It contains detailed methods and data that can be used to calculate arc flash hazards for the simplest to the most… Read more
Feb 12, 2016 | By Edvard Csanyi
Energy and Power
DC Testing Methods Conducted On Solid Insulation
Let’s take a look at the two important tests that are conducted with DC voltage. Two tests can be conducted on solid insulation using following DC testing methods: insulation resistance testing and high-potential (Hi-pot) voltage testing. Table of contents: Insulation… Read more
Feb 10, 2016 | By Edvard Csanyi
