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Archive: Category «Transformers»

Power Substation

How not to overspecify high voltage CTs and VTs

The installations wherein CTs and VTs are mounted to measure the normal and abnormal values of current and voltage, have many variations in key system parameters, including voltage class, insulation… Read more

Feb 18, 2019 | By Edvard

How not to overspecify high voltage CTs and VTs
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Connections and working principles of three-phase distribution transformers

A three-phase service can be supplied by one three-phase transformer unit or by interconnecting three single-phase transformer units. One three-phase unit is smaller than an equivalent size bank consisting of…...

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This technical article/guide requires a Premium Membership. You can choose an annually based Plus, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers. With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Feb 08, 2019 | By Edvard

Connections and working principles of three-phase distribution transformers
Electrical Lectures ♛

How to determine power transformer impedance for calculation of short-circuit currents

In order to calculate short-circuit currents, it is obligatory to know conductor-specific equivalent data and impedances of electrical operational equipment, which are usually given by the respective manufacturer. The calculation…...

Premium Membership Required

This technical article/guide requires a Premium Membership. You can choose an annually based Plus, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers. With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
Did you know? - Save 50% on all video courses by purchasing Enterprise plan.
Log In »Register »

Jan 25, 2019 | By Edvard

How To Determine Power Transformer Impedance
Electrical Lectures

Biased-differential protection theory and application

The term biased-differential or percentage differential is based on the fact that the operating threshold increases with the through current. Because of that, comparison of upstream and downstream currents in… Read more

Oct 22, 2018 | By Edvard

Biased-differential protection theory and application


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