Main substations installed on public MV network, their functions and layout
This technical article is a reminder of the main substations installed on MV networks. It is concluded by two layouts showing their applications in real terms. A substation or installation… Read more
Mar 18, 2016 | By Edvard Csanyi
Matching transformers for parallel operation
The following rules must be obeyed in order to successfully connect two or more transformers in parallel with each other: The turns ratios of all of the transformers must be… Read more
Mar 16, 2016 | By Edvard Csanyi
Recommended Practice For Cableways Selection and Installation
The term cableways refers to conductors and/or cables together with the means of support and protection, etc. for example cable trays, ladders, ducts, trenches, and so on… are all cableways…. Read more
Mar 14, 2016 | By Edvard Csanyi
Do dry type transformers cost less than oil-filled?
To many industrial and commercial organisations dry type transformers are seen to be advantageous compared with oil filled units. They avoid the perceived fire risk of oil filled transformers and… Read more
Mar 12, 2016 | By Edvard Csanyi
Underground residential distribution – More hidden and more reliable
A classic underground residential distribution circuit is an underground circuit in a loop arrangement fed at each end from an overhead circuit (see Figure 1). The loop arrangement allows utilities… Read more
Mar 11, 2016 | By Edvard Csanyi
What makes a good grounding system?
The performance of the grounding system is determined by the quality of the following five components all of which are of equal importance. The grounding electrode conductor The grounding connections… Read more
Mar 09, 2016 | By Edvard Csanyi
3 reasons for increased efficiency loss in rewound motors
Approximately 300,000 motors are rewound in the UK every year, with an average rating of about 12 kW, so the efficiency of rewound motors is extremely important. The loss in… Read more
Mar 07, 2016 | By Edvard Csanyi
18 initial checks of electrical installations that every electrician MUST perform
Before any testing of low voltage electrical installations (and equipment) is carried out, a detailed physical inspection must be made to ensure that everything is to a relevant National standard,… Read more
Mar 05, 2016 | By Edvard Csanyi
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… Read more
Mar 04, 2016 | By jiguparmar
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… Read more
Mar 04, 2016 | By Edvard Csanyi
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… Read more
Mar 02, 2016 | By Edvard Csanyi
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… Read more
Feb 29, 2016 | By Edvard Csanyi
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… Read more
Feb 27, 2016 | By Edvard Csanyi
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… Read more
Feb 26, 2016 | By Edvard Csanyi
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… Read more
Feb 24, 2016 | By Edvard Csanyi