# ISO 1680-1:1986 — Withdrawn and superseded ISO standards For ISO 1680-1:1986, item title is Acoustics — Test code for the measurement of airborne noise emitted by rotating electrical machinery — Part 1: Engineering method for free-field conditions over a reflecting plane; status code is 9599; successor is ISO 1680:1999; withdrawn / published date is 1986-06-19, recorded from its source on 2026-08-05. - **Identifier:** ISO 1680-1:1986 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Test code for the measurement of airborne noise emitted by rotating electrical machinery — Part 1: Engineering method for free-field conditions over a reflecting plane _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 1680:1999 - **Withdrawn / published date:** 1986-06-19 _(verified: appears in the quote below)_ ## What the source says > 6294,IS,,ISO 1680-1:1986,Acoustics — Test code for the measurement of airborne noise emitted by rotating electrical machinery — Part 1: Engineering method for free-field conditions over a reflecting plane,Acoustique — Code d'essai pour le mesurage du bruit aérien émis par les machines électriques tournantes — Partie 1: Méthode d'expertise pour les conditions de champ libre au-dessus d'un plan réfléchissant,1986-06-19,1,"['29.160.01','17.140.20']",ISO/TC 43/SC 1,9599,[6293],[25629],"['en','fr']",15, ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).