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Archive: Category «Protection»

Energy and Power

LV Surge Arresters In Action Against Lightning

The site consists of offices (computer hardware, lighting and heating unit), a security post (fire alarm, burglar alarm, access control, video surveillance) and three buildings for the manufacturing process on… Read more

Dec 29, 2015 | By Edvard

LV Surge Arresters In Action Against Lightning
Energy and Power

The Basics Of Circuit Breaker Tripping Units

The main objective of circuit breaker tripping units and protective functions in general is to detect faults and to selectively isolate faulted parts of the system. It must also permit… Read more

Dec 21, 2015 | By Edvard

The Basics Of Circuit Breaker Tripping Units
Energy and Power

Learn To Interpret Single Line Diagram (SLD)

We usually depict the electrical distribution system by a graphic representation called a single line diagram (SLD). A single line can show all or part of a system. It is… Read more

Dec 19, 2015 | By Edvard

Learn To Interpret Single Line Diagram (SLD)
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

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

HV/MV/LV Transformer Protection Schemes
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

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

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

Sectionalisers as one of the most used for distribution system protection


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