1、I BSI BS*5285 75 m lb2Libb9 OLiL5L 9 I nlAll I UDC 644.1 : 697.953 : 621.63-83 ion iuu BS 5285 : 1975 Specification Performance of a.c. electric ventilating fans and regulators for non-industrial use 0 I Performances des ventilateurs et rgulateurs lectriques en courant alternatif pour usages non-ind
2、ustriels Leistungen fr Wechselstromventilatoren und Regler fr nichtindustrielle Zwecke British Standards Institution Gr 3 Contents Foreword Co-operating organizations Specification 1. Scope 2. References 3. Definitions 4. Impellers 5. Radio interference suppression 6. Speed regulators 7. Noise level
3、 8. Marking 9. Tests IO. Tolerances on ratings BSI BSm52B5 75 Lb2Libb4 0373520 5 W Page Inside front cover Back cover Appendix A. Additional information to be supplied by the manufacturer 1 1 1 1 1 1 1 1 2 2 3 Foreword This British Standard has been prepared under the authority of the Electrical Ind
4、ustry Standards Committee and covers the performance of and corresponding methods of test for ventilating fans and regulators for non-industrial use of the type and size stated in the scope. The standard is related to IEC Publication 665 A.C. electric ventilating fans and regulators for household an
5、d similar purposes. Attention is drawn to the fact that the safety requirements for ventilating fans for household use are covered by BS 3456 Safety of household electrical appliances, Section 2.29 Ventilating fans. The safety of other ventilating fans is covered by BS 4934 Safety requirements for e
6、lectric fans and regulators. . BSI BSX5285 75 m Lb24bbS OLiL52L 7 m BS 5285 : 1975 British Standard Specification Performance of a.c. electric ventilating fans and regulators for non-industrial use 1. Scope This British Standard specifies the performance of and the corresponding methods of test for
7、ventilating fans for non- industrial use with impellers not exceeding 500 mm in diameter, driven by single-phase a.c. motors having a power consumption not exceeding 500 W including any associated regulators for use on single-phase a.c. circuits not exceeding 250 V. It covers the performance of vent
8、ilating fans for use in walls, windows, kitchens or for attachment to ducts etc. The standard also covers cooker hoods containing fans. 2. References The titles of the British Standards referred-to in this standard are listed on the inside back cover. 3. Definitions For the purposes of this British
9、Standard, the following definitions, in addition to those given in BS 3456 : Part 1, 3.1 Fans 3.1.1 ventilating fan. A 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. 3.1.2 partition type
10、ventilating (type A) fan. A 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. 3.1.3 free inlet ventilating (type 6) fan. A ventilating fan with a direct inlet from free space a
11、nd with ducted outlet. 3.1.4 free outlet ventilating (type C) fan. A ventilating fan with ducted inlet, and with direct outlet to free space. 3.1.5 fully ducted ventilating (type D) fan. A ventilating fan with ducted inlet and ducted outlet. 3.1.6 centrifugal fan. A fan in which the air leaves the i
12、mpeller in a direction substantially at right angles to its axis. 3.1.7 propeller fan. A fan in which the air leaves the impeller in a direction substantially parallel to its axis. 3.1.8 cross flow fan. A fan in which the air is caused to flow through the impeller in a direction substantially at rig
13、ht angles to its axis, both entering and leaving the impeller at its periphery. 3.2 Types of enclosures of motors and regulators 3.2.1 totally enclosed type. An enclosure which does not provide for circulation of air between the inside and outside of the case, but which is not necessarily air-tight.
14、 3.2.2 ventilated type. An enclosure in which the ventilation is not materially obstructed while the live and internal rotating parts are protected mechanically against accidental or careless contact: 3.3 rated air delivery. The normal working air delivery assigned to the fan by the maker. apply. 3.
15、4 rated pressure. That pressure at which the fan delivers rated air delivery. 3.5 rated frequency. The frequency assigned to the fan or regulator by the maker. 4. Impellers 4.1 The impellers of the ventilating fans shall be well balanced. The blades and blade carriers shall be securely fixed so that
16、 they do not loosen in operation. 4.2 Guards shall be fitted to fans where the fans are normally fitted in a position in wh-ich the blades would be easily accessible to the user. 5. Radio interference suppression Fans and regulators shall meet the relevant requirements of BS 800. 6. Speed regulators
17、 Fan regulators shall be capable of reducing the full speed of the fan at the specified test voltage by at least 25 % in the case of capacitor motors and 20 % in the case of shaded pole motors. 7. Noise level Precautions shall be taken in the manufacture of fans and regulators to ensure that the noi
18、se level at all speeds is subjectively acceptable. 8. Marking 8.1 Each fan shall be indelibly marked with at least-the following information additional to that specified in BS 3456 : Section 2.29. (a) Country of manufacture. (b) Rated air delivery at zero pressure (for partition type ventilating fan
19、s only). (c) Rated air delivery and rated pressure for duct type fans. (d) Rated voltage(s) or rated voltage range(s) in volts. (e) Symbol for nature of supply. (f) Rated frequency or rated frequency range. (9) Rated input in watts. (h) Makers name or trade mark. (i) Makers model or type reference.
20、(j) Symbol for degree of protection against moisture, if applicable. (k) Symbol for fans of class I I, if applicable. NOTE. It is recommended that the above information should also be marked on the associated regulator, if it is separate from the fan. 8.2 For additional information that the manufact
21、urer may be requested to supply, see appendix A. . - I A A When the voltage range is in excess of 10 % of the mean of the range BSI BS*5iB5 75 Lb24667 0171522 7 = When the voltage range is 10 % or less of the mean of the range BS 5285 : 1975 Air performance, power input and speed regulations 9. Test
22、s 9.1 General. The tests specified in this standard are type tests and are as follows: (a) speed regulators (clause 6) (b) air performance (9.3) (c) power input (9.2.2) . 9.2 Test voltage. The voltage at which the tests are conducted shall be in accordance with the following requirements. 9.2.1 When
23、 a rated voltage is indicated on the nameplate, the tests shall be conducted at the rated voltage. If the fan is specified for two or more distinct rated voltages, the tests shall be carried out at the most unfavourable voltage. 9.2.2 When a voltage range is indicated on the nameplate, the test volt
24、age shall be as given in the following table: Highest and Mean of the lowest values upper and lower of range limits I Test voltage Test 9.2.4 Limits of voltage variation. The variation in the voltage shall not exceed I 1 % of the test voltage during air performance tests. While taking the current an
25、d wattmeter readings during these tests, however, the voltage shall be the test voltage. 9.3 Test for air Performance 9.3.1 The air performance tests for type A and type 6 fans shall be carried out in accordance with BS 848 : Part 1 : place during the air performance tests. A _. Any integral guards
26、if fitted should be in 9.3.2 The air performance test for type C and type D fans shall be carried out in accordance with . except that a portion of duct whose length is 20 shall be affixed to the inlet side of the fan, and a part of the duct equal to i2D in length will protrude into the test duct. A
27、 low loss bell mouth entry may be provided within this length. 9.3.3 If the fan is provided with an inlet or outlet connect- ing flange or spigot, the fan inlet or outlet diameter is measured inside this connection. ES 848 : Part 1 . 10. Tolerances on ratings 10.1 The measured air delivery shall be
28、not less than 90 % of the rated air delivery. 9.2.3 For a fan with a range of frequencies, the tests shall be made at the frequency which gives the most unfavourable resu Its. 2 - BSI BS*5285 75 LhZVbh 0271523 BS 5285 : 1975 1 AppendixA Additional information to be supplied by the manufacturer The f
29、ollowing additional information in respect of a ventilating fan shall be supplied by the manufacturer on request: power-factor, rated speed in revolutions per minute, impeller diameter, number of blades, type of regulator and number of running positions, class of insulating material, performance cha
30、racteristic, type of bearings. 3 A e BSI BS*5285 75 m 1624669 OL7152Li 2 m BSI publications referred to in this standard This standard makes reference to the following British Standards: BS 800 Radio interference limits and measurements for - eqGLpment embodying small motors and control devices BS 8
31、48 Fans for general PurPoSes .- Part 1 Methods of testing performance - -. BS 3456 Safety of household electrical appliances Section 2.29 Ventilating fans - BSI BS*52B5 75 Lb24669 0171525 4 = BS 5285 : 1975 Amd. No. This British Standard, having been prepared under the direction of the Electrical In
32、dustry Standards Committee, was published under theauthority of the Executive Board on31 October 1975. British Standards Institution, 1975 ISBN: O 580 08748 4 Date of issue Text affected - Copyright Users of British Standards are reminded that copyright subsists in all BSI publications. No part of t
33、his publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols and size, type or grade designations. Enquiries should be addressed to the Publications
34、Manager, 101 Pentonville Road, London N1 9ND (Telephone 01-837 8801 ; Telex 23218). Contract requirements Attention is drawn to the fact that this British Standard does not purport to include all the necessary provisions of a contract. Revision of British Standards British Standards are revised, whe
35、n necessary, by the issue either of amendment slips or of revised editions. It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions. The following BSI references relate to the work on this standard: Committee reference ELE!28
36、Draft for comment 74/22485 DC Co-operating organizations The Electrical Industry Standards Committee, under whose super- vision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Association of Consul
37、ting Engineers Associated Offices Technical Committee Association of Manufacturers of Domestic Electrical Appliances Association of Mining Electrical and Mechanical Engineers Association of Supervisory and Executive Engineers British Electrical and Allied Manufacturers Association British Electrotec
38、hnical Approvals Board for Household British Non-Ferrous Metals Federation British Radio Equipment Manufacturers Association British Railways Board British Steel Corporation Crown Agents for Oversea Governments and Administrations Department of Energy Department of Prices and Consumer Protection (St
39、andards, Electric Cable Makers Confederation Equipment *Department of the Environment Weights and Measures) Amendments issued since publication Electrical Contractors Association Electrical Contractors Association of Scotland Electrical Research Association Electricity Supply Industry in England and
40、 Wales Electronic Engineering Association Engineering Equipment Users Association Health and Safety Executive (HM Factory Inspectorate) Institution of Electrical and Electronics Technician Engineers Lighting Industry Federation Limited National Inspection Council for Electrical Installation Contract
41、ing Oil Companies Materials Association Post Office South of Scotland Electricity Board *Institution of Electrical Engineers *Ministry of Defence The Government departments and scientific and industrial organiza- tions marked with an asterisk in the above list, together with the following, were dire
42、ctly represented on the committee entrusted with the preparation of this British Standard: Control and Automation Manufacturers Association (BEAMA) Hevac Association CD cn British Standards Institution . 2 Park Street London W1A 2BS . Telephone 01-629 9000 . Telex 266933 7510-1.5k-B 8709-O-1.4k-B Am
43、endment No. 1 published and effective from 30 September 1987 to BS 5285 : 1975 Performance of a.c. electric ventilating fans and regulators for non-industrial use AMD 5591 Revised text _-_-_- AMD 5591 Foreword September 1987 Delete paragraph 2 and substitute the following: The standard is related to
44、 IEC Publication 665 A.C. electric ventilating fans and regulators for household and similar purposes. _-_-_-_-_- AMD 5591 Clause 9.1 General September 1987 Delete the asterisks at the end of lines 3 and 5 and delete the corresponding footnote. . AMD 5591 September 1987 Clause 9.3 Test for air perfo
45、rmance Delete the dagger at the end of the title and delete the corresponding footnote. _-_- AMD 5591 Clause 9.3.1 In lines 2 and 3 delete BS 848 : Part 1 : 1963, method 8 and substitute BS 848 : Part 1. September 1987 -_-_-_-_- AMD 5591 Clause 9.3.2 In lines 2 and 3 delete BS 848 : Part 1 : 1963, method 8 and substitute BS 848 : Part 1. September 1987 . AMD 5591 Inside back cover In the list of publications delete the entry for BS 848 and substitute the following. September 1987 BS 848 Fans for general purposes Part 1 Methods of testing performance . LE LI28
