Power Substation
5 conditions for perfect parallel operation of single phase transformers
In perfect parallel operation of two or more transformers, current in each transformer would be directly proportional to the transformer capacity, and the arithmetic sum would equal one-half the total current. In practice, this is seldom achieved because of small… Read more
Jan 23, 2016 | By Edvard Csanyi
Metering
Measurement of residual currents on a distribution feeder
The measurement of the earth fault or residual currents on a distribution system feeder can be done by the so-called summation connection, where the three current transformers, one in every phase, are connected and the summated current is brought to… Read more
Jan 22, 2016 | By Edvard Csanyi
Energy and Power
When You Ground Ungrounded System With Grounding Transformer
The common grounding assumes a wye-connected neutral to ground. As this is not always the case, and in some cases it is not a three-phase system that it is desired to be grounded. For situations of this kind a grounding… Read more
Jan 20, 2016 | By Edvard Csanyi
Energy and Power
Wiring practices to provide future load growth in buildings
Electrical wiring is often installed without consideration for how the use of the space may change over time, particularly in residential building. This article recommends wiring practices that meet the NEC and provide for future flexibility and load growth in residential… Read more
Jan 18, 2016 | By Edvard Csanyi
Protection
Setting the generator protective relay functions
This technical article will cover the gathering of information needed to calculate protective relay settings, the setting calculations for the various protective functions, typical generator/turbine withstand times for abnormal operating conditions, and the math associated with various types of impedance elements…. Read more
Jan 16, 2016 | By Edvard Csanyi
Electric Motor
Protection schemes for generators and motors
It is difficult to define precisely the protection schemes that should be adopted for an electricity distribution system, given the large number of valid alternatives for each situation, but some schemes will be presented as a guide for protecting the… Read more
Jan 15, 2016 | By Edvard Csanyi
Energy and Power
How to identify these four parameters and lower facility’s electricity bill
The world is more energy conscious these days. But unlike you, most of the world doesn’t pay electricity bill that rivals the cost of a four bedroom home. You understand the need to know where energy is being expended in… Read more
Jan 13, 2016 | By Edvard Csanyi
Industrial Automation
9 Reasons For Automation Of Manufacturing Processes
Automated manufacturing systems operate in the factory on the physical product. They perform operations such as processing, assembly, inspection, or material handling, in some cases accomplishing more than one of these operations in the same system. They are called automated… Read more
Jan 11, 2016 | By Edvard Csanyi
Energy and Power
Underground substations – Out of sight, out of mind
Underground substations help to bring high voltage electricity directly into the city center. The stations are environmentally friendly, almost unnoticeable, and have none of the planning problems encountered by surface-built solutions. Building new transformer substations in inner-city zones or expanding… Read more
Jan 09, 2016 | By Edvard Csanyi
Low Voltage
Guidelines To Inspection Of Molded Case Circuit Breakers (MCCB)
The need for inspection of molded case breakers (MCCB) will vary depending on operating conditions. Suggested inspection and testing is defined in ANSI/NEMA AB 4, Guidelines for Inspection and Preventive Maintenance of Molded Case Circuit Breakers Used in Commercial and… Read more
Jan 08, 2016 | By Edvard Csanyi
Cables
8 tips to avoid ground loops when dealing with signal level circuits
General recommendation is to properly design and implement the facility’s grounding system to avoid unwanted involvement of ground loops with the operation of the equipment. This kind of approach can also eliminate the need to consider equipment modifications and to… Read more
Jan 06, 2016 | By Edvard Csanyi
Low Voltage
Electrical Distribution Architecture In Water Treatment Plants
For both drinking water and wastewater treatment, 4 different sizes of plants have been distinguished. The size of plants can be expressed in quantity of treated water per day, or in corresponding number of inhabitants. Four different types of (waste)… Read more
Jan 04, 2016 | By Edvard Csanyi
Energy and Power
5 good circuit schemes to avoid HV substation outage
High voltage substations are points in the power system where power can be pooled from generating sources, distributed and transformed, and delivered to the load points. Substations are interconnected with each other so that the power system becomes a meshed… Read more
Jan 02, 2016 | By Edvard Csanyi
Electrical Lectures
2 approaches to analyse and solve series parallel networks
A firm understanding of the basic principles associated with series and parallel circuits is a sufficient background to begin an investigation of any single-source DC network having a combination of series and parallel elements or branches. In general, series parallel networks are… Read more
Jan 01, 2016 | By Edvard Csanyi
Energy and Power
Pull the switch and enter the 2016! Engineers, Happy New Year!
When I think of this year 2015… well it was a pretty busy year in general. A lot of published technical articles and various released electrical guides, tons of your comments. Believe it or not, in this year we had 14,6 millions of pageviews… Read more
Dec 30, 2015 | By Edvard Csanyi
