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Standard ČSN EN 60255-149 1.5.2014 preview

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ČSN EN 60255-149 (353510)

Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays



STANDARD published on 1.5.2014


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The information about the standard:

Designation standards: ČSN EN 60255-149
Classification mark: 353510
Catalog number: 95176
Publication date standards: 1.5.2014
SKU: NS-155968
The number of pages: 44
Approximate weight : 132 g (0.29 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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The category - similar standards:

Relays

Annotation of standard text ČSN EN 60255-149 (353510):

Předmětem této normy je stanovit společné a reprodukovatelné odkazy pro hodnocení závislých časových relé, která chrání zařízení proti tepelnému poškození prostřednictvím měření AC proudu procházejícího zařízením. Pro specifikaci tepelné ochrany uvedenou v této normě mohou být použitelné doplňkové vstupní napájecí veličiny, jakými jsou teplota okolí, chladícího média, teplota oleje v blízkosti hladiny a teplota vinutí. Tato norma platí pro ochranná relé založená na tepelném modelu s paměťovou funkcí. V této normě jsou také obsaženy zkušební metody pro ověření funkčních charakteristik tepelné ochranné funkce a přesnosti

Preview of the standard ČSN EN 60255-149 (353510)

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