IEC 60879-2019 pdf free.Comfort fans and regulators for household and similar purposes – Methods for measuring performance.
IEC 60879 specifies the performance-measuring methods of comfort fans and regulators for household and similar purposes, including conventional fans, tower fans and bladeless fans, their rated voltage being not more than 250 V for single-phase fans and 480 V for other fans, and their rated power input being less than 125 W.
NOTE 1 According to the testing method, the comfort fans are classified into two groups:
— pedestal fans, table fans, wall fans, louvre fans, tower fans, bladeless fans:
— ceiling tans
Wherever applicable, the term “fan” used in this document includes its associated regulator, if any.
NOTE 2 This document does not apply to
— safety of electric fans for household and similar purposes (EC 60335-2-80);
— performance of ventilating fans (IEC 60665);
— electromagnetic compatibility of fans (CISPR 14-1 and CISPR 14-2, IEC 61000-3-2, IEC 61000-3-3).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60704-2-7, Household and similar electrical appliances — Test code for the determination of airborne acoustical noise — Part 2-7: Particular requirements for fans
IEC 62301, Household electrical appliances — Measurement of standby power
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Information provision
Manufacturers shall provide the following information in the instructions:
a) rated fan flow rate m3/min (rounded to one decimal place);
b) service value (m3/min)IW (rounded to one decimal place);
C) standby power consumption W (rounded to one decimal place);
d) sound power level dB(A).
5 Tests
5.1 General conditions for testing
5.1.1 Atmospheric conditions
Unless otherwise specified, the test procedures and measurements shall be carried out under
the following conditions:
— temperature: 20 C ± 5C. in case of doubt the temperature shall be 23 ‘C ± 2’C;
— relative humidity: 50 % ± 30 %;
— air pressure: 86 kPa to 106 kPa.
NOTE Temperature and humidity condilions within the specitied ranges are requited for good repeatability and
reproducibility.
Care should be taken to avoid changes in temperature and relative humidity during the test.
5.1.2 Conditioning of test equipment
Measuring equipment to be used for the tests shall be stored for at least 16 h at the atmospheric conditions specified in 5.1.1 prior to the test.
5.1.3 Voltage and frequency
The tests shall be conducted at the rated voltage. Fans designed for DC only shall be operated at DC. Fans designed for both AC and DC shall be operated at AC. Fans not marked with rated frequency shall be operated at either 50 Hz i 1 Hz or 60 Hz t 1 Hz as is common in the country of use and with a total harmonic distortion 5 %.
Unless otherwise specified, the tests are carried out at a specific test voltage within a voltage range (for example 100 V to 240 V) or at the rated voltage or rated voltages (for example 120 V or 120 V and 240 V).
The stability of the voltage shall be ± 1 %.
5.1.4 Running-In of the fan
Prior to starting the tests on a new fan, it shall run at its maximum airflow setting with unrestricted air flow and with the oscillating mechanisms and moving louvres, if any. In operation for at least 1 hour to ensure adequate running-in. Any other functions such as luminaires, purifiers, humidifiers, heaters, if any, shall be connected.
5.1.5 Operation of the fan
Before starting the tests, the fan and its attachments are adjusted in accordance with the manufacturer’s instructions for normal operation. Any controls shall be set for maximum continuous air flow unless the manufacturer’s instruction states otherwise. Any other functions such as luminaires, purifiers, humidifiers, heaters. if any, shall be turned off.
5.1.6 Conditioning prior to each test
Prior to starting each test, the fan shall be conditioned for 30 mm under the provisions given in 51.4 but with oscillating mechanisms and moving louvres, if any, not in operation.IEC 60879 pdf download.