ISO 12759-3:2019 PDF

Name: ISO 12759-3:2019 — Fans — Efficiency classification for fans — Part 3: Fans without drives at maximum operating speed
SKU: ISO 12759-3:2019
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Fans — Efficiency classification for fans — Part 3: Fans without drives at maximum operating speed

Название (английский):

ISO 12759-3:2019

Fans — Efficiency classification for fans — Part 3: Fans without drives at maximum operating speed

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 11 марта 2019 г.
Издание:: ISO IS 12759 edition 1 version 1
ICS:: 23.120

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Описание (английский):

This document establishes a system for the classification of fan efficiency for all fan types which have a nominal fan shaft power rating of 0,125 kW and above. This document is applicable to fans only. It does not apply to drives or the system in which fans are installed. This document can be used by legislators or regulatory bodies for defining future energy saving targets.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 12759-3:2019 - Fans - Efficiency classification for fans - Part 3: Fans without drives at maximum operating speed establishes a uniform system to classify the energy efficiency of fans that have no attached drive (impeller-only or “fan without drives”) and a nominal shaft power ≥ 0.125 kW. The standard defines how to determine a fan’s optimum (peak) efficiency at its maximum permissible rotational speed and assigns a Fan Efficiency Grade (FEG) (for example FEG85, FEG80, FEG71) based on the best-efficiency point. It is intended for manufacturers, test laboratories and regulators and can be used by legislators to set energy-saving targets.

Key topics and requirements

Scope and applicability: Applies to fans only (not motors, belts, VFDs or broader systems); nominal shaft power 0.125 kW and above.

Efficiency metric: Efficiency is taken at the fan’s best-efficiency point (optimum efficiency) at maximum operating speed.

FEG classification: Defines fixed efficiency grades (FEG50 through FEG90 ranges) tied to fan impeller diameter; a fan’s grade is determined by comparing its peak efficiency to grade boundary curves. Annex A provides the boundary Formula (A.1) and constants plus tabulated grade limits (Table A.2).

Testing and configurations: Manufacturers shall declare the test configuration used. Four standardized configurations (Categories A–D from ISO 5801:2017) are referenced for determining the operating point.

Normative references and tolerances: Relies on ISO 5801 (performance testing), ISO 13348 (tolerances and data presentation) and ISO 13349 (vocabulary). Specified measurement tolerances and conversion methods apply.

Labeling rules: A fan is assigned an FEG when its optimum efficiency falls between the upper and lower limits for its size; no FEG is assigned below FEG50.

Applications and users

Manufacturers: design verification, product certification, marketing and performance claims.

Test laboratories: standardized test methods and reporting for consistent FEG assignment.

Regulators and legislators: defining minimum efficiency requirements and energy-saving targets for fan products.

Specifiers, purchasers and energy auditors: comparing fan options for HVAC, ventilation, process engineering, drying, pneumatic conveying and agricultural fans.

Related standards

ISO 5801:2017 - Fans - Performance testing using standardized airways

ISO 13348:2007 - Industrial fans - Tolerances, methods of conversion and technical data presentation

ISO 13349 - Fans - Vocabulary and definitions

Keywords: ISO 12759-3:2019, fan efficiency classification, fans without drives, Fan Efficiency Grade (FEG), best efficiency point, ISO 5801, energy efficiency for fans.

ISO 12759-3:2019 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 5801:2017

Fans — Performance testing using standardized airways

ISO 13348:2007

Industrial fans — Tolerances, methods of conversion and technical data presentation

SIST EN ISO 5801:2018/A1:2025

Fans - Performance testing using standardized airways - Amendment 1 (ISO 5801:2017/Amd 1:2025)

ISO 13348:2006

Industrial fans — Tolerances, methods of conversion and technical data presentation

SIST EN ISO 13349-2:2022

Fans - Vocabulary and definitions of categories - Part 2: Categories (ISO 13349-2:2022)