Occurrence and detection of an earth fault in MV power systems with isolated neutral

The mode of operation of an MV industrial power system that is galvanically isolated from the public power supply is determined by the method of neutral earthing on the secondary… Read more

Oct 14, 2019 | Energy and Power

Top ten software for electrical design, analysis and simulation of T&D networks

The importance of stability and maintaining the power quality of the electricity transmission and distribution (T&D) networks necessitates a thorough examination of all aspects of the design, analysis, and simulation…...

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Oct 10, 2019 | Power Substation ♛

Medium voltage switches for isolation and earthing (applications & IEC 62271 ratings)

Medium voltage switches for use on 1-52kV indoor systems are predominantly used for isolation and earthing. Although the majority of these switches are air insulated, gas insulated (SF6) combination switches… Read more

Oct 09, 2019 | Energy and Power

The art of achieving selectivity between incoming feeders connected in parallel

Calculating selectivity between incoming low voltage feeders connected in parallel is never an easy task. In parallel operation of two, three and more transformers on a common busbar, the partial… Read more

Oct 07, 2019 | Energy and Power

Automatic transfer switch between three power sources (analysis of schemes)

When a switchboard can be supplied from two or more different sources, transfer between those sources can be done manually or automatically. This kind of configuration is usually designed when…...

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Oct 03, 2019 | Low Voltage ♛

Pre-commissioning checks and tests of high voltage current transformers (CTs)

Once erection is completed, various pre-commissioning checks and tests are performed to ensure the healthiness of the switchyard equipment prior to their energization. This technical article explains various major electrical… Read more

Oct 02, 2019 | Testing and Commissioning

Good practice rules for electromagnetic compatibility (EMC) of LV conductors

The search for an overall optimization of the installation with regard to electromagnetic compatibility (EMC) and its ability to function without suffering or emitting excessive interference, comes via a set… Read more

Sep 30, 2019 | Energy and Power

Protective grounding requirements for transmission and distribution lines

This technical article covers protective grounding requirements for steel tower and wood pole supported transmission and distribution lines, and insulated power cables. Protective grounds must be installed so all phases… Read more

Sep 25, 2019 | Maintenance

Things you MUST know when commissioning low voltage switchgear and circuit breakers

Purchasing low voltage switchgear is not that easy, it’s not like purchasing a new TV or laptop. You have to be very experienced and deadly serious when specifying and ordering… Read more

Sep 23, 2019 | Low Voltage

Why we find temperature so important everywhere in electrical engineering?

The purpose of this article is to underline and illustrate the importance of temperature for various aspects of electrical engineering. This is one of the crucial engineering issues from the…...

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Sep 20, 2019 | Energy and Power ♛