Energy and Power
Why I prefer busbar trunking systems more than cables
When a planning concept for power supply is developed, it is not only imperative to observe standards and regulations, it is also important to discuss and clarify economic and technical interrelations (cables and/or busbar trunking systems depending on situations). The… Read more
Jan 30, 2016 | By Edvard Csanyi
Energy and Power
Important points about grounding of electronic equipment
Grounding electronic equipment for personal safety and clearing of faults is no different than that of any other equipment. Safe grounding requires fast opening of circuit breakers or fuses and minimization of voltage differences between exposed metal surfaces on all… Read more
Jan 29, 2016 | By Edvard Csanyi
Energy and Power
Harmonics. What are they? What do they do?
The harmonics allow to represent any periodic waveform. In fact, according to Fourier’s theorem, any periodic function of a period T may be represented as a summation of: A sinusoid with the same period T; Some sinusoids with the same frequency… Read more
Jan 27, 2016 | By Edvard Csanyi
Energy and Power
10 questions to test your electrician skills
These are not-so-easy, but also not-too-hard questions for you to try to answer and test your electrician skills. Whether you are a novice in a field of electrical engineering or a professional electrician, these questions will move your brain cells… Read more
Jan 25, 2016 | By Edvard Csanyi
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
