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

4 electrical quantities you MUST fully understand to select the right cast-resin transformer

This the basic question, but it’s important to start from the scratch. Well, distribution transformers link the MV to the LV system and step down the electrical power to be… Read more

Nov 13, 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

Lessons I learned during the start-up of an MV switchgear

In the world of electrical engineering, a term start up assumes all works which are necessary to be done for putting in operation already tested switchgear, as close as possible…...

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Oct 31, 2019 | Miodrag Kokotovic

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

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 | Miodrag Kokotovic

Generators applicable to high reliability requirements of healthcare and other facilities

Generator systems described in this technical article are applicable to healthcare requirements, as well as other facilities that may require a high degree of reliability. The electrical supply for data… Read more

Aug 28, 2019 | Edvard

10 most common locations of shunt capacitors installed in a power system

It’s quite simple, using shunt capacitor banks to supply the leading currents required by the load relieves the generator from supplying that part of the inductive current. Both distribution and… Read more

Aug 26, 2019 | Edvard

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