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Author Archive for: Salem Alshahrani

Salem Alshahrani

5 awesome technical articles.

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Electrical engineer (BEE & Meng). Specialized in substation design, especially in LV/MV switchgears and transformers. Passionate in power system planning, analysis, and stability studies.

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Mastering GIS control circuits: AC/DC auxiliary circuits and circuit breaker closing circuit

A gas-insulated substation (GIS) is usually utilized in high voltage applications in which all conductive parts are encapsulated in sealed cylinders with SF6 as the insulating medium. The air-insulated substation (AIS), on the other hand,…...

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Jan 11, 2021 | Salem Alshahrani

Mastering GIS control circuits – AC/DC auxiliary circuits and circuit breaker closing circuit

Mastering switchgear control circuits: trip, BCPU and alarm, indication, and interlock circuits

In the last article, an introductory part of the switchgear control circuits, including DC/AC circuit and breaker closing circuit, was discussed thoroughly. This article continues the discussion with a breaker trip circuit, bay control-protection unit…...

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This technical article/guide requires a Premium Membership. Get access to all premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out each plan's benefits and choose the membership plan that works best for you or your organization.
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Dec 14, 2020 | Salem Alshahrani

Mastering switchgear control circuits: trip, BCPU and alarm, indication, and interlock circuits

Mastering switchgear control circuits – AC/DC circuits and circuit breaker closing circuit

Control circuits are vital to the operation of medium voltage switchgear. The integrity of these control circuits is essential to the switchgear’s proper operation, so commissioning and maintenance activities records are extremely important for troubleshooting…...

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This technical article/guide requires a Premium Membership. Get access to all premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out each plan's benefits and choose the membership plan that works best for you or your organization.
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Nov 30, 2020 | Salem Alshahrani

Mastering switchgear control circuits – AC/DC circuits and circuit breaker closing circuit

Mastering Motor Control Center (MCC): Wiring diagrams and equipment from zero to hero

Motor control center (MCC) was introduced back in 1937 to place different motor starters in one cabinet to save space. It is a modular cabinet that supplies and controls motors, which is usually a tailor-made…...

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This technical article/guide requires a Premium Membership. Get access to all premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out each plan's benefits and choose the membership plan that works best for you or your organization.
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Nov 02, 2020 | Salem Alshahrani

Mastering Motor Control Center (MCC): Wiring diagrams and equipment from zero to hero

How hard can be analyzing MV switchgear wiring diagrams and single line diagram

The capability of reading different types of drawings is an essential skill to perform almost all of the engineering tasks. The engineering drawings form the building blocks of industry method to convey detailed information to…...

PREMIUM Membership Required

This technical article/guide requires a Premium Membership. Get access to all premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out each plan's benefits and choose the membership plan that works best for you or your organization.
You can choose an annually based Plus, Pro, or Enterprise membership plan.Log InSign Up

Oct 05, 2020 | Salem Alshahrani

How hard can be analyzing MV switchgear wiring diagrams and single line diagram


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