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Archive: Category «Protection»

Energy and Power

Learn How To Specify Current Transformers

Current transformers are used to supply information to the protective relays and/or current, power and energy metering “instruments”. For this purpose they must supply a secondary current proportional to the… Read more

Dec 05, 2015 | By Edvard Csanyi

Learn How To Specify Current Transformers
Protection

HV/MV/LV Transformer Protection Schemes

Transformer protection should take into account the power, voltage, vector group and the importance of the unit within a particular system. Depending on these factors, the transformers can be assigned… Read more

Nov 28, 2015 | By Edvard Csanyi

HV/MV/LV Transformer Protection Schemes
Energy and Power

Automatic Transfer System (ATS) Explained in Details

Using the basic building blocks of utility power, system topology, on-site generation, and uninterruptible power supplies, the basic role of the automatic transfer system may now be defined. In this… Read more

Nov 20, 2015 | By Edvard Csanyi

Operational Requirments of Automatic Transfer System
Protection

Secondary Distribution Networks In Urban Areas

A high level of interconnection, either ring or mesh, to ensure a high degree of availability of supply to the consumer, characterises secondary distribution networks in urban areas. Domestic, industrial… Read more

Nov 04, 2015 | By Edvard Csanyi

Secondary Distribution Networks In Urban Areas
Energy and Power

Protection of A.C. Electrified Railways

Many regional, urban and high-speed inter-urban rail networks worldwide are electrified, to provide the motive power for trains (Figure 1). The electrification system serves as the contact interface for current… Read more

Oct 30, 2015 | By Edvard Csanyi

Protection of A.C. Electrified Railways
Energy and Power

4 Factors To Consider When Selecting a Sectionalizer

Sectionalizers are (beside overcurrent relays, reclosers and fuses) one of the most used for distribution system protection. A sectionalizer is a device that automatically isolates faulted sections of a distribution… Read more

Sep 16, 2015 | By Edvard Csanyi

Sectionalisers as one of the most used for distribution system protection
Energy and Power

The Basics of Electrical Bus Protections

When we examine electrical protection schemes, the best place to start is with electrical bus protections, as they are the easiest to protect. They utilize the fundamental concept of the overcurrent relay (Figure 1)…. Read more

Sep 05, 2015 | By Edvard Csanyi

The Basics of Electrical Bus Protections (Overcurrent, Differential and Undervoltage)


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