Energy and Power
How to choose a form of separation for LV switchboard and how to classify them
By form of separation it is meant the type of subdivision provided within the switchboard. Separation by means of barriers or partitions (metallic or insulating) may have several functions. And… Read more
Sep 25, 2017 | By Edvard Csanyi
Electric Motor
Specific capacitor installations & reactive compensation of asynchronous motors / transformers
Although in general, the calculation of the reactive power to be installed is initially carried out globally, it is advisable not to be swayed by the apparent simplicity of this… Read more
Aug 30, 2017 | By Edvard Csanyi
Energy and Power
5 special applications of residual current devices (RCDs)
Normally residual current devices (RCDs) are used for protection against direct and indirect contacts. An RCD can detect low leakage currents that could flow through the body of a person…. Read more
Aug 16, 2017 | By Edvard Csanyi
Energy and Power
Practical advice for positioning of circuit breakers inside LV switchboard
Mounting of the different mechanical and electrical components (enclosures, busbars, functional units – circuit breakers, etc.) which constitute the LV switchboard defined by the original manufacturer must be carried out… Read more
Aug 07, 2017 | By Edvard Csanyi
Technical Guide/Paper
Earthing systems in medium and low voltage electrical networks
In any medium or low voltage three-phase system there are three single-phase voltages which are measured between each phase and a common point called the “neutral point”. In balanced operating… Read more
Aug 06, 2017 | By Edvard Csanyi
Energy and Power
How to install a manual transfer switch for a backup system in 16 steps
A manual transfer switch is installed next to the main service panel to override the normal electrical service with power from a backup generator during a power outage. Manual transfer… Read more
Aug 02, 2017 | By Edvard Csanyi
Energy and Power
20 Simple Questions to Check Your Overcurrent Protection Knowledge
As you already know, reliable overcurrent protective devices, such as fuses and circuit breakers, prevent or minimize costly damage to transformers, conductors, motors, equipment, and the other many components and… Read more
Jul 31, 2017 | By Edvard Csanyi
Energy and Power
Three proven ways to reduce electrical energy losses in buildings
As savings in terms of costs are the main concern for the operators, the first approach is to try to reduce electrical energy losses in buildings. Also, the electricity supply… Read more
Jul 24, 2017 | By Edvard Csanyi
Energy and Power
Practical solutions for preventing ferroresonance in electrical installations
Ferroresonance is a non-linear resonance phenomenon that can affect power networks. The abnormal rates of harmonics and transient or steady state overvoltages and overcurrents that it causes are often dangerous… Read more
Jul 17, 2017 | By Edvard Csanyi
Technical Guide/Paper
Training report on 33/11 kV substation
The main bus 33KV is connected to grid located at Sector-25, INDIRANAGAR, LUCKNOW. Now the transmission line first parallel connected with lightning arrester to diverge surge, followed by CVT connected… Read more
Jul 03, 2017 | By Edvard Csanyi
Energy and Power
System earthings and incidents on MV side that result in LV disturbances
Low voltage networks, unless a replacement uninterruptible power supply (with galvanic insulation) or a LV/LV transformer is used, are influenced by MV. This influence takes the form of: capacitive coupling, galvanic… Read more
Jun 30, 2017 | By Edvard Csanyi
Technical Guide/Paper
Shunt capacitor bank applications and protection fundamentals
The paper provides a quick and simple way to calculate the out-of-balance voltages (voltage protection) or current (current protection) resulting from failed capacitor units or elements. While the identification of… Read more
Jun 26, 2017 | By Edvard Csanyi
Protection
Pre-commissioning tests and in-service checks of protection system
The pre-commissioning tests need to be carefully programmed so that they take place in a logical and efficient order, in order that no equipment is disturbed again during subsequent tests…. Read more
Jun 14, 2017 | By Edvard Csanyi
Technical Guide/Paper
Calculation and prevention of short circuit currents in high voltage grids
Three-phase electric power is a kind of poly-phase system and it is a method of AC electric power generation, transmission, and distribution. It is the most popular and the most… Read more
Jun 07, 2017 | By Edvard Csanyi
Power Substation
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How backup protection is used to improve fault-clearing system in HV networks
All elements in the fault-clearing system do not always operate correctly. Protection relays may fail to operate or may operate unwantedly. Switching devices may fail to interrupt the fault current…....
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Jun 05, 2017 | By Edvard Csanyi
