1、BRITISH STANDARD BS 3999-4: 1967 Incorporating Amendment No.1 Methods of Measuring the performance of household electrical appliances Part 4: Electric clothes drying cabinets and racksBS3999-4:1967 This British Standard, having been approved by the ElectricalIndustry Standards Committee and endorsed
2、 by theChairman of the EngineeringDivisional Council,was published under theauthority of the General Council on 27 September 1967 BSI 08-1999 First published as BS3999-4:1967 The following BSI references relate to the work on this standard: Committee reference ELE/94, ELE/94/5 Draft for comment 66/2
3、3250 ISBN 0 580 041344 Co-operating organizations The Electrical Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical C
4、ommittee Electronic Equipment Association Association of Consulting Engineers Engineering Equipment Users Association Association of Mining Electrical and Institution of Electrical Engineers Mechanical Engineers Ministry of Defence Association of Supervising Electrical Ministry of Defence, Army Depa
5、rtment Engineers Ministry of Defence, Navy Department British Electrical and Allied Manufacturers Ministry of Labour (H.M. Factory Association* Inspectorate) British Railways Board Ministry of Power Crown Agents for Oversea Governments and Ministry of Public Building and Works Administrations Minist
6、ry of Technology Electric Cable Makers Confederation Municipal Passenger Transport Association, Electric Lamp Industry Council Incorporated Electric Light Fittings Association National Inspection Council for Electrical Electrical Contractors Association Installation Contracting (Incorporated)* Natio
7、nal Physics Laboratory (Ministry of Electrical Contractors Association of Technology) Scotland Oil Companies Materials Association Electrical Research Association* Post Office Electricity Council, The Central Electricity Public Transport Association (Incorporated) Generating Board and the Area Board
8、s in South of Scotland Electricity Board England and Wales* The Government departments and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this standard: Consu
9、mer Council Good Housekeeping Institute Electrical Association for Women Womens Advisory Committee of BSI Fire Protection Association Amendments issued since publication Amd. No. Date of issue Comments 1161 May1973 Indicated by a sideline in the marginBS3999-4:1967 BSI 08-1999 i Contents Page Co-ope
10、rating organizations Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 General conditions of measurement 1 4 Effective total length of hanging rails 1 5 Effective maximum area of hanging material 1 6 Time to dry without changing round 2 7 Time to dry when towelling is changed round 2 Append
11、ix Z Specification for standard towelling 3 Annex A Suggested information required for an informative label for an electric clothes drying cabinet or rack 3 Annex B Instructions for use and care 6BS3999-4:1967 ii BSI 08-1999 Foreword This Standard makes reference to the following British Standards:
12、BS1363, Two-pole and earthing-pin fused-plugs and shuttered socket-outlets for a.c. circuits up to250volts. BS3456, The testing and approval of household electrical appliances Part1: General requirements Part2: Particular requirements Section2.9Clothes drying cabinets and towel rails. The British St
13、andards Institution is preparing standard methods for measuring the performance of a wide range of consumer goods. Originally prepared at the request of the Consumer Concil, these methods may be used to provide some of the data required for an informative labelling scheme. The methods of measurement
14、 for household electric appliances will form parts of BS3999. Each part will apply to a particular appliance. In the case of household electrical appliances, the relevant safety requirements are contained in appropriate sections of BS3456, “The testing and approval of household electrical appliances
15、”. This part of BS3999 prepared under the authority of the Electrical Industry Standards Committee, deals with the standard methods of measuring the performance of electric clothes drying cabinets and racks. Annex A gives suggested information required for an informative labelling scheme for electri
16、c clothes drying cabinets and racks. Annex B gives use and care instructions. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself con
17、fer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table o
18、n the inside front cover.BS3999-4:1967 BSI 08-1999 1 1 Scope This part of BS3999 defines the principal performance characteristics of household electric clothes drying cabinets and racks, which are of interest to the user, and describes the standard methods of measuring these characteristics. The me
19、thods of measurement do not apply to tumbler dryers. 2 Definitions For the purposes of this part of this BritishStandard the following definitions apply: 2.1 electric clothes drying cabinet or rack (referredto as dryer) a dryer with means for supporting clothes and applying a current of electrically
20、 heated air to the clothes 2.2 fan-assisted clothes drying cabinet or rack a dryer in which the circulation of air is assisted by an electrically driven fan 2.3 rated input the input in watts or kilowatts marked on the rating plate 2.4 rated voltage the voltage marked on the rating plate 2.5 towelli
21、ng white cotton terry fabric complying with Appendix Z 3 General conditions of measurement 3.1 General. The supply voltage for the measurements shall be such that the input is equal to the rated input, except that where a dryer is marked with a voltage range which includes240V, the measurements shal
22、l be made at an input corresponding to240V. For measurements under Clauses6 and7 the relative humidity shall be65 3%. The measurements shall be made at an ambient temperature of20 2 C. If a cover is provided it shall be in place for all measurements. Before the measurements of Clauses6 and7 are made
23、, the dryer shall be run without load for2h; it shall then be allowed to cool and all surfaces likely to come into contact with the towelling are wiped clean. 3.2 Standard towelling. To prepare the towelling referred to in2.1 (5) it shall be washed to remove any soluble finish. After drying and cond
24、itioning as referred to below, the towelling shall be weighed to determine its initial conditioned weight. It shall be replaced when it has lost3% of its initial conditioned weight. 3.2.1 Conditioning. The towelling shall be conditioned at the ambient temperature and humidity referred to in3.1 befor
25、e any measurements are made. 4 Effective total length of hanging rails 4.1 Procedure. Measure the length of each rail from which it is possible to hang material vertically. The effective total length of rails is the sum of all the measured lengths except that: 1) Where any two rails are less than2.5
26、cm apart, only one is included. 2) Any section of rail which has less than15cm clear space below it is not included. 4.2 Result. Record the result in centimetres. 5 Effective maximum area of hanging material 5.1 Procedure. Measure the clear depth from the top of each rail included as a measured rail
27、 in Clause4. In the case of rails which are in the same vertical plane the reference plane is to be2.5cm above the lower rail. For each rail, multiply the measured height by the length of that rail as determined in4.1, and calculate the area of the hanging material. Since material will hang either s
28、ide of a rail, the areas found by calculation are doubled, and the total of these values is the effective maximum area of hanging material. In the case of rack dryers the clear depth is considered to be terminated by the horizontal plane through the highest point of the heater unit. 5.2 Result. Reco
29、rd the effective maximum area of hanging material in square centimetres.BS3999-4:1967 2 BSI 08-1999 6 Time to dry without changing round 6.1 Procedure. Prepare a load of standard towelling to suit the spaces for hanging as determined in5.1, and determine the conditioned weight of the towelling. Hang
30、 this load in the dryer and determine the weight of the loaded dryer. Remove the load of towelling from the dryer and soak it with water at a temperature of45 5 C, until the damp weight is twice the conditioned weight, ensuring that the water is evenly distributed throughout the load. Reload the tow
31、elling into the dryer and set the heater control to the manufacturers recommended setting. If a control setting has not been recommended, set it to the maximum control setting. Switch on the dryer and continue the operation until the towelling has reached1.05 times the conditioned weight. Determine
32、the time taken for the load of towelling to reach this weight. Note by visual inspection whether there is any discoloration of the towelling due to the drying process. 6.2 Result. Record the time taken to dry the full load of towelling, expressed in hours and minutes. Record the heat control setting
33、 used. Record any visible discoloration of the towelling due to the drying process. 7 Time to dry when towelling is changed round 7.1 Procedure. Repeat the method described in6.1 and after1h, change the towelling round in a manner most likely to assist drying.5min is the maximum time allowed for the
34、 change round; this time is to be included in the total drying time. 7.2 Result. Record the time taken to dry the full load of towelling, expressed in hours and minutes. Record the heat control setting used. Record any visible discoloration of the towelling due to the drying process.BS3999-4:1967 BS
35、I 08-1999 3 Appendix Z Specification for standard towelling White cotton terry fabric to the following specification 1) , is to be used: Warp ends,22 per centimetre(56 per inch) Weft picks,16 per centimetre(42 per inch) Weave, three pick terry. Length of terry relative to ground warp, six times. Pur
36、e bleach, Conditioned weight390g/m 2 (1.28oz/ft 2 ) 5% Annex A Suggested information required for an informative label for an electric clothes drying cabinet or rack 2) A.1 The label may be required to bear the following information: 1) Connection to the electricity supply. All-insulated appliances
37、shall be marked as such together with the statement “must not be earthed”. In all other cases the statement “must be eartheduse only a three pin plug” shall be used. 2) Plug rating. The smallest standard rated plug suitable for use with the appliance. 3) Fuse. The current rating of the fuse to be fi
38、tted when the appliance is connected to a plug complying with BS1363 3) . 4) Input. The rated input of the heater as specified in BS3456-1 and BS3456-2.9 4) . 5) Heating setting(s). A statement of whether the appliance has one, two or another number of heat settings or continuously variable heat con
39、trol. In addition the heat setting used for the methods described in6.1 and7.1 of BS3999-4 is to be stated in the appropriate place under “Performance” unless the appliance has only one heat setting. 6) Air circulation. A statement as to whether the air circulation is fan assisted or by convection.
40、7) Construction. A statement of the materials, finish and coating used for the casing and rails. 8) Space required. A statement in inches, of the height, width and depth of the space occupied by the dryer and its immediate connections. For dryers which may be stored in a space smaller than the worki
41、ng space, dimensions of both spaces are to be stated. 9) Effective total length of hanging rails. A statement of the total length determined by the method described in4.1 of BS3999-4 and expressed in feet, rounded down to the nearest foot. On production models the statement shall be correct to withi
42、n 1ft. 10) Effective maximum area of hanging material. A statement of the area as determined by the method described in5.1 of BS3999-4 and expressed in square feet rounded down to the nearest square foot. On production models the statement shall be correct to within1sq.ft. 11) Time to dry without ch
43、anging round. The time as determined by the method described in6.1 of BS3999-4 and expressed in hours, rounded upwards to the nearest h. On production models the statement shall be correct to within h. 12) Time to dry when changed round. The time as determined by the method described in7.1 of BS3999
44、-4 and expressed in hours, rounded upwards to the nearest h. On production models, the statement shall be correct to within h. 13) Licensee. The name of the manufacturer or responsible vendor licensed to use the Teltag mark. 1) Material obtainable from W. M. Christy and Sons Ltd., Fairfield Mills, D
45、roylesden, Manchester, is known to be suitable. 2) See Foreword. The information in this annex does not form part of the method for measurement; it is reproduced from data provided by the Consumer Council for convenient reference. 3) BS1363, “Two-pole and earthing-pin fused-plugs and shuttered socke
46、t-outlets for a.c. circuits up to250volts”. 4) BS3456, “The testing and approval of household electrical appliances”, Part1, “General requirements”, Part2, “Particular requirements”, Section2.9, “Clothes drying cabinets and towel rails”.BS3999-4:1967 4 BSI 08-1999 A.2 In addition the following items
47、 are required to be stated on the label: A.2.1 Makers model. The name, if any, under which the dryer is advertised and sold and if different types and sizes are sold under the same name, or if no name is used, the reference used by the maker to identify the model. No figures or words, likely to misl
48、ead as to any of the characteristics on the label, may be included. A.2.2 The following statements in the appropriate places as shown on the outline label inA.3: 1) “Safetysee BEAB mark”. 2) “Voltagesee rating plate”. 3) “Read instructions for use and care”. Where a manufacturer or responsible vendo
49、r supplies literature at the point of sale describing special features of the dryer, the statement “Read instructions for use and care” may be replaced by the following: “See makers (or other name) literature on use and care and for any special features”.BS3999-4:1967 BSI 08-1999 5 A.3 The following outline information label for an electric clothes drying cabinet or rack is included for information only. BS3999-4:1967 6 BSI 08-1999 Annex B Instructions for use and care 5) B.1 It is recommended that the instructions for use and care provide
