Medium voltage soft starter for heavy-duty motor control (operation and special applications)

A soft starter is an electronic motor controller used on three phase medium voltage squirrel cage induction motors. During motor starting, the soft starter controls the voltage or current supplied… Read more

Nov 18, 2019 | Edvard

The essentials of an automatic changeover systems in medium voltage networks

In medium voltage distribution networks, it is important to maintain a high level of reliability. Industry relies on the continuous operation of critical plant, which requires no or little disruption… Read more

Nov 04, 2019 | Edvard

Reactive power compensation in electrical plants with generators

Compensation of reactive power applied in buildings or small facilities operates in the first and second quadrants of the coordinate system. Increasingly, complex industrial plants, for example plants burning wood… Read more

Oct 30, 2019 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Edvard

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 | Miodrag Kokotovic

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