IEC 60665:2018 pdf download

IEC 60665:2018 pdf download.A.C. ventilating fans and regulators for household and similar purposes – Methods for measuring performance
1 Scope
This document specifies the performance and the corresponding methods of test of AC ventilating fans for household and similar purposes intended for air forcing and exhaust, driven by single-phase AC motors having a power consumption of less than 1 25 W (including any associated regulators) for use on single-phase AC circuits not exceeding 250 V. This document applies to ventilating fans such as partition fans for walls and windows and duct fans. NOTE This document does not apply to: – the safety of electric fans for household and similar purposes (IEC 60335-2- 80); – the performance of comfort fans (IEC 60879); – range hoods and other cooking fume extractors (IEC 61 591 ); – airborne acoustic noise for fans (IEC 60704-2-7); – electromagnetic compatibility of fans (CISPR 1 4-1 and CISPR 1 4-2, IEC 61 000-3-2, IEC 61 000-3-3).
3 Terms and definitions
For the purpose of this standard, 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 NOTE When the terms “voltage” and “current” are used, they imply root mean square (RMS). values unless otherwise specified. 3.1 fan fan blades connected to and driven by an electric motor, including its associated speed regulator, if any 3.2 ventilating fan fan intended to displace air either from one side of a partition to the other, or within a duct installed either on the fan inlet or on the fan outlet, or both 3.3 partition ventilating fan type A ventilating fan ventilating fan installed in or upon the aperture of a partition in order to displace air from one side of the partition to the other side, both the sides being free spaces 3.4 free inlet partition ventilating fan type B ventilating fan ventilating fan with a direct inlet from free space and with ducted outlet 3.5 free outlet partition ventilating fan type C ventilating fan ventilating fan with ducted inlet, and with direct outlet to free space 3.6 fully ducted ventilating fan type D ventilating fan ventilating fan with ducted inlet and ducted outlet 3.7 fan inlet diameter D 1 diameter of the circular opening through which the air first enters the fan casing Note 1 to entry: If the fan is provided with an inlet connecting flange or spigot, the fan inlet diameter is measured inside this connection.
5 Speed regulators
5.1 Regulators shall be capable of reducing the speed of the fan by at least • 35 % of full speed in the case of fans with capacitor motors, • 20 % of full speed in the case of fans with shaded pole motors, at the voltage and frequency specified for the air delivery performance test. 5.2 The regulator shall have an “off” position preferably next to the lowest speed position and shall preferably be provided with five running positions. 5.3 The mechanism of the regulator shall be so designed as to ensure positive contact at each running position. In the case of induction type regulators, no portion of the induction winding shall remain permanently short-circuited in any of the running positions. 5.4 Positions of the regulator shall be distinctly and clearly marked and the indicator on the operating handle or knob shall correctly indicate the position of the regulator. If used, “0” shall correspond to the position “off” and the highest number to the highest speed operation, for example 0-1 -2-3-4-5 or 0-I-II-III-IV-V.