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Homepage>IEC Standards>IEC 60947-4-2:2020 - Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters
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download between 0-24 hoursReleased: 2020-06-26

IEC 60947-4-2:2020

Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters – Semiconductor motor controllers, starters and soft-starters

Appareillage à basse tension - Partie 4-2: Contacteurs et démarreurs de moteurs - Gradateurs, démarreurs et démarreurs progressifs de moteurs à semiconducteurs

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English/French - Bilingual
Standard number:IEC 60947-4-2:2020
Released:2020-06-26
Language:English/French - Bilingual
DESCRIPTION

IEC 60947-4-2:2020

IEC 60947-4-2:2020 applies to semiconductor motor controllers, starters and soft-starters which can include a series mechanical switching device, intended to be connected to circuits the rated voltage of which does not exceed 1 000 V AC. This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - scope exclusions; - editorial correction of notes and hanging paragraphs; - reference to IEC 62683-1; - safety aspects related to: - general aspects; - limited energy circuits; - electronic circuits; - mention of dedicated wiring accessories; - power consumption measurement; - alignment to IEC 60947-1:2020.

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