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CEI EN 50243

CEI Classification: 36-27

Isolatori passanti per esterno da 24 kV e 36 kV e per correnti di 5 kA e 8 kA, per trasformatori immersi in liquido isolante
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Publication Date: 2023-03
ValidFrom: 2023-04
Language: EN
Pages: 30
Issue Num.:  19317 E
Commitee: CEI-CT36, CEI-SC36A
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La presente Norma si applica agli isolatori passanti con isolamento ceramico, per esterno, per tensioni massime per apparecchiature da 24 kV e 36 kV, con correnti nominali di 5 kA e 8 kA, per trasformatori immersi in liquido isolante e frequenze da 15 Hz a 60 Hz.
Questa Norma stabilisce le dimensioni per garantire l'intercambiabilità e il montaggio adeguato degli isolatori passanti.
Sono specificati due tipi di costruzione, il tipo A e il tipo B, entrambi per le tensioni più elevate per apparecchiature da 24 kV e 36 kV e correnti nominali di 5 kA e 8 kA. Le sollecitazioni meccaniche del tubo conduttore definiscono la differenza tra il tipo A e il tipo B. Il tubo conduttore del tipo A è fissato in modo assiale e radiale nella parte superiore dell'isolatore passante. Il terminale di linea interno del trasformatore può essere flessibile e senza alcun supporto speciale per l'estremità inferiore del tubo conduttore.
La Norma in oggetto sostituisce completamente la Norma CEI EN 50243:2002-11, che rimane applicabile fino al 20-06-2025.
Questa Norma viene pubblicata dal CEI nella sola lingua inglese, in quanto particolarmente mirata a settori specialistici.

Relations

Replaces: CEI EN 50243

See also

EN 50243:2022

International Coding Standard (ICS)

29.080.20
Bushings
29.180
Transformers. Reactors
* Instrument transformers, see 17.220.20

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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.

Each field has a two-digit notation, e.g.

  43    Road Vehicle Engineering

The main fields are subdivided into groups (level 2). The notation of a group consists of the field notation and a three-digit group number, separated by a point, e.g.

  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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