Energy and Power
Breaking of a short circuit current in a direct current system
Direct current presents different problems than alternating current with aregard to the phenomena associated to the breaking of a short circuit current and interruption of other types of high value current since the arc extinction results to be particularly difficult…. Read more
Aug 29, 2016 | By Edvard Csanyi
Energy and Power
Calculate reactive power of the capacitor bank and improve power factor
For the dimensioning of the capacitor bank to be installed in order to improve the power factor of a plant, it is necessary to calculate correctly the power factor according to the consumption or to the load cycle of the… Read more
Aug 24, 2016 | By Edvard Csanyi
Low Voltage
Why busbar trunking system is a space saving solution worth every penny
As line distribution boards, busbar trunking system (BTS) also belongs to the group of switchgear assemblies documented in IEC 61439 (VDE 0660-600). Apart from the general requirements of IEC 61439-1 (VDE 0660-600-1), the required product features of busbar trunking system… Read more
Aug 17, 2016 | By Edvard Csanyi
Energy and Power
Which type of residual current device (RCD) you should use for protection?
It is not quite clear when and by whom the first residual current device (RCD) was developed, but it certainly appeared on the market in the 1950s and was initially used by some utility companies to fight “energy theft” due… Read more
Jul 28, 2016 | By Edvard Csanyi
Energy and Power
Earthing in DC distribution systems similar to the AC systems
This technical article shows earthing of a specific pole of a two-wire DC distribution systems. The decision whether to earth the positive or the negative pole shall be based upon operational circumstances on site or other considerations. The Standard IEC… Read more
Jul 20, 2016 | By Edvard Csanyi
Low Voltage
Few good tips for low voltage switchgear maintenance and care
The low voltage switchgear involves many devices like power circuit breakers, MCBs, aux. relays, CTs, VTs etc. and of course at the end – enclosures (indoor or outdoor type). The frequency of inspection and maintenance of low voltage switchgear should be… Read more
Jul 18, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home
The circuit wirings in this article show the most common wiring variations for typical electrical devices. Most new wiring you install will match one or more of the wirings shown. Find the wirings that match your situation and use them to… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home (2)
1st part | 2nd part | 3rd part The list of the next ten household circuit wirings: Double receptacle circuit with shared neutral wire (receptacles alternate circuits) Double receptacle small-appliance circuit with GFCIs & shared neutral wire Double receptacle small… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home (3)
1st part | 2nd part | 3rd part The list of the last eleven household circuit wirings: Three-way switches & light fixture (fixture at start of cable run) Three-way switches & light fixture (fixture at end of cable run) Three-way… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
Few Tips For Correct Protection Against Indirect Contact In TT System
An earth fault in a TT system originates the circuit represented in Figure 1. The fault current flows through the secondary winding of the transformer, the line conductor, the fault resistance, the protective conductor, and the earth electrode resistances (RA,… Read more
Jun 03, 2016 | By Edvard Csanyi
Energy and Power
The basics of selectivity (discrimination) between circuit breakers
On economical grounds and for the reason of reliability of the service, it is not always ideal to interrupt the supply to the installation in the case of a fault as fast as possible. That’s why we have the selectivity… Read more
Apr 04, 2016 | By Edvard Csanyi
Low Voltage
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, erected/installed in compliance with the IEE Regulations and not damaged… Read more
Mar 05, 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
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
