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Archive: Category «Protection»

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
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

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

The Philosophy Of Breaker Failure Protection

The separation of equipment into zones will only work successfully if the outputs of the protections can be guaranteed to do their job. This makes logical sense. For the bus… Read more

May 29, 2015 | By Edvard

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