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CEI EN IEC 61788-17

CEI Classification: 90-63

Superconduttività
Parte 17: Misura delle caratteristiche elettroniche - Densità di corrente critica locale e sua distribuzione nei film superconduttori di grande superficie
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Publication Date: 2022-04
ValidFrom: 2022-05
Language: EN
Pages: 50
Issue Num.:  18545 E
Commitee: CEI-CT90
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The publication contains images and text that need color printing for a better reading.
La presente Norma descrive il metodo di misura della densità di corrente critica locale (Jc) e la sua distribuzione in film superconduttori ad alta temperatura (HTS) di grande superficie. Tale metodo induttivo utilizza tensioni di terza armonica. La considerazione più importante per misurazioni accurate è determinare Jc alla temperatura dell'azoto liquido seguendo un criterio di campo elettrico ed ottenere caratteristiche corrente-tensione dalla sua dipendenza dalla frequenza.
Sebbene sia possibile misurare Jc in campi magnetici CC applicati, lo scopo della presente Norma è limitato alla misurazione senza campi magnetici CC.
Questa tecnica misura intrinsecamente la corrente critica del foglio che è il prodotto di Jc e lo spessore del film d. La gamma e la risoluzione di misurazione per Jcd di pellicole HTS sono le seguenti:
- Jcd: da 200 A/m a 32 kA/m (in base ai risultati, non limitativo);
- risoluzione di misura: 100 A/m (basato sui risultati, non su limitazioni).
La Norma in oggetto sostituisce completamente la Norma CEI EN 61788-17:2013-10, che rimane applicabile fino al 02-06-2024.
Questa Norma viene pubblicata dal CEI nella sola lingua inglese in quanto particolarmente mirata a settori specialistici.
La presente Norma recepisce il testo originale inglese della Pubblicazione IEC.

Relations

Replaces: CEI EN 61788-17

See also

IEC 61788-17:2021
EN IEC 61788-17:2021

International Coding Standard (ICS)

29.050
Superconductivity and conducting materials
17.220.20
Measurement of electrical and magnetic quantities
* Including measuring instruments, instrument transformers
* Electric energy meters in buildings, see 91.140.50

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ICS

International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

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  43    Road Vehicle Engineering

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  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

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