Power supply conceptual schemes for small, medium-sized and large industrial plants

This technical article presents preferred system structures and power supply concepts for small, medium-sized and large industrial plants that meet the different requirements for power demand and supply quality. For…...

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Oct 22, 2019 | Energy and Power ♛

Standard cubicle configurations for a medium voltage metal-enclosed switchgear

This technical article will shed some light on the standard design of medium voltage metal-enclosed switchgear cubicles in terms of enclosure configurations as well as the characteristics of busbar system…. Read more

Oct 21, 2019 | Energy and Power

IED (Intelligent Electronic Device) advanced functions that make our life better

IEDs have been deployed extensively in power automation systems recently, and the shift from RTUs to IEDs is evident due to the integration and interoperability features of the IEDs. This… Read more

Oct 16, 2019 | Power Substation

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