1、 Reference number ISO 7176-9:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 7176-9 Third edition 2009-11-15 Wheelchairs Part 9: Climatic tests for electric wheelchairs Fauteuils roulants Partie 9: Essais climatiques pour fauteuils roulants lectriques ISO 7176-9:2009(E) PDF disclaimer This PDF file may c
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6、of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedISO 7176-9:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduct
7、ionvi 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Principle2 5 Apparatus.2 6 Preparation of test wheelchair .3 7 Requirements.4 8 Test methods .4 8.1 General .4 8.2 Cold operating conditions and resistance to condensation.4 8.3 Hot operating conditions5 8.4 Cold storage conditions
8、.5 8.5 Hot storage conditions .6 8.6 Protection against ingress of liquids 6 9 Functional check .7 9.1 General .7 9.2 Requirements.7 9.3 Test method .8 10 Test report8 11 Disclosure 9 Bibliography10 ISO 7176-9:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for St
9、andardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the rig
10、ht to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International
11、 Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as a
12、n International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO
13、7176-9 was prepared by Technical Committee ISO/TC 173, Assistive products for persons with disability, Subcommittee SC 1, Wheelchairs. This third edition cancels and replaces the second edition (ISO 7176-9:2001), all clauses of which have been technically revised. Significant technical changes from
14、the second edition are that the climatic tests are carried out in a specified sequence, the cold operating conditions test is repeated (to cause a build-up of condensation within enclosures) and inspection is carried out following the water spray test to confirm that creepage and clearance distances
15、 will remain acceptable. In addition, the effects of dust are now included in the scope of this International Standard, although requirements are under consideration. ISO 7176 consists of the following parts, under the general title Wheelchairs: Part 1: Determination of static stability Part 2: Dete
16、rmination of dynamic stability of electric wheelchairs Part 3: Determination of effectiveness of brakes Part 4: Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range Part 5: Determination of dimensions, mass and manoeuvring space Part 6: Determinatio
17、n of maximum speed, acceleration and deceleration of electric wheelchairs Part 7: Measurement of seating and wheel dimensions Part 8: Requirements and test methods for static, impact and fatigue strengths Part 9: Climatic tests for electric wheelchairs Part 10: Determination of obstacle-climbing abi
18、lity of electrically powered wheelchairs Part 11: Test dummies ISO 7176-9:2009(E) ISO 2009 All rights reserved v Part 13: Determination of coefficient of friction of test surfaces Part 14: Power and control systems for electrically powered wheelchairs and scooters Requirements and test methods Part
19、15: Requirements for information disclosure, documentation and labelling Part 16: Resistance to ignition of upholstered parts Requirements and test methods Part 19: Wheeled mobility devices for use as seats in motor vehicles Part 21: Requirements and test methods for electromagnetic compatibility of
20、 electrically powered wheelchairs and scooters, and battery chargers Part 22: Set-up procedures Part 23: Requirements and test methods for attendant-operated stair-climbing devices Part 24: Requirements and test methods for user-operated stair-climbing devices Part 26: Vocabulary Part 28: Requiremen
21、ts and test methods for stair-climbing devices ISO 7176-9:2009(E) vi ISO 2009 All rights reservedIntroduction Wheelchairs can be used or stored in adverse environmental conditions which could severely affect their functioning, sometimes to the extent of being dangerous. The tests specified in this p
22、art of ISO 7176 have been developed to determine whether, and to what extent, wheelchairs are vulnerable to environmental conditions. Operation is tested in conditions which simulate use in some of the wider climatic variations experienced around the world. The wheelchair electrical system might be
23、exposed to liquids, including salt water. Since the effects of salt water contamination are difficult to evaluate, the immunity of the system is assessed on the basis of exposure to a fresh water spray. INTERNATIONAL STANDARD ISO 7176-9:2009(E) ISO 2009 All rights reserved 1Wheelchairs Part 9: Clima
24、tic tests for electric wheelchairs 1 Scope This part of ISO 7176 specifies requirements and test methods to determine the effects of rain, dust, condensation and the effects of changes of temperature on the basic functioning of electrically powered wheelchairs, including scooters, intended to carry
25、one person, with a maximum speed not exceeding 15 km/h. This part of ISO 7176 does not include requirements for resistance to corrosion. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appl
26、ies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7176-11, Wheelchairs Test dummies ISO 7176-15, Wheelchairs Requirements for information disclosure, documentation and labelling ISO 7176-22, Wheelchairs Set-up procedures ISO 7176-26, W
27、heelchairs Vocabulary IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 60601-1, Medical electrical equipment Part 1: General requirements for basic safety and essential performance 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO
28、7176-26 and the following apply. 3.1 standard ambient conditions environmental conditions of 20 C 5 C and relative humidity of 60 % 20 % 3.2 enclosure housing affording the type and degree of protection suitable for the intended application IEV 195-02-35 ISO 7176-9:2009(E) 2 ISO 2009 All rights rese
29、rved4 Principle The functioning of the wheelchair is tested after it has been exposed to environmental conditions that are expected in normal use, storage and transportation. NOTE Conditions expected in normal use include extremes of temperature, and rain. 5 Apparatus 5.1 Test track, marked as shown
30、 in Figure 1 and consisting of a flat, horizontal plane at standard ambient conditions. NOTE The floor of a typical large building used for manufacturing or for indoor leisure purposes, with, for example, a concrete or asphalt floor, is acceptable. Dimensions in metres Key 1 marker M 2 rectangle A 3
31、 rectangle B Figure 1 Test track The markings consist of the following: a single marker M with no horizontal dimensions greater than 200 mm; two open rectangles, A and B, with length L = 1,5l 100 mm; width W = 1,5w 100 mm; ISO 7176-9:2009(E) ISO 2009 All rights reserved 3where l is the full overall
32、length of the wheelchair; w is the overall width of the wheelchair. 5.2 Test dummy, as specified in ISO 7176-11, selected as specified in ISO 7176-22, or a human test occupant with supplementary weights added to give a mass distribution equivalent to the applicable dummy. Mass added to the wheelchai
33、r for the purposes of control or instrumentation should not significantly affect the overall mass distribution of the wheelchair. The overall mass of the loaded wheelchair may be adjusted to compensate for any such added mass. 5.3 Means to drive the wheelchair, which may be a remote controller or th
34、e human test occupant, if used. 5.4 Thermometer, to measure ambient air temperature to an accuracy of 1 C. 5.5 Stopwatch, to measure time to an accuracy of 1 s. 5.6 Hygrometer, to measure relative humidity to an accuracy of 2 %. 5.7 Cold test environment, to subject a wheelchair to ambient condition
35、s of (40 5) C and (25 2 5 + ) C. 5.8 Hot test environment, to subject a wheelchair to ambient conditions of (50 5 2 + ) C and (65 5) C. 5.9 Ambient test environment, to subject a wheelchair to standard ambient conditions (3.1). 5.10 Water spray, spray water as specified in IEC 60529 for second chara
36、cteristic numeral 4. 5.11 Means to support the wheelchair, as specified in 8.6. 6 Preparation of test wheelchair 6.1 Set up the wheelchair as specified in ISO 7176-22. NOTE The dummy or human test occupant is placed in the wheelchair only during the functional testing specified in Clause 9. 6.2 Make
37、 provision to detect any movement of driven parts of the wheelchair during the tests. EXAMPLE Making marks on the driven wheels, seat raising mechanism and back support reclining mechanism. 6.3 Ensure the batteries are fully charged before commencing each test. 6.4 If practicable, ensure that any fa
38、cilities that cause the wheelchair to deactivate automatically, or to switch off after being unused for a period of time, are disabled. EXAMPLE Sleep mode. NOTE Where such features cannot be disabled it will be necessary to reactivate the wheelchair during exposure to some test conditions. See 8.1.
39、ISO 7176-9:2009(E) 4 ISO 2009 All rights reserved7 Requirements The wheelchair shall continue to function according to the manufacturers specifications after being subjected to each of the tests specified in Clause 8. At the end of testing, there shall be no evidence of water that could result in re
40、duction of clearances and creepage distances below the applicable values specified in IEC 60601-1 for degree of pollution 3. NOTE This applies only to creepage and clearance distances between conductors that are equal to, or less than, those specified in IEC 60601-1 for degree of pollution 3, that w
41、ould carry a continuous current of more than 5 A when leakage occurs, and that are in enclosures where water ingress has occurred during the test specified in 8.6. When the wheelchair is tested as specified in Clause 8: it shall meet the requirements of the functional check specified in Clause 9; no
42、 driven part shall exhibit unintended movement during exposure to the specified test conditions. 8 Test methods 8.1 General Conduct the tests specified in 8.2 to 8.6 in the following sequence: a) Cold operating conditions and resistance to condensation (8.2); b) Hot operating conditions (8.3); c) Co
43、ld storage conditions (8.4); d) Hot storage conditions (8.5); e) Protection against ingress of liquids (8.6). If features that cause the wheelchair to deactivate automatically or to switch off after being unused for a period of time cannot be disabled (see 6.4), ensure that the wheelchair is reactiv
44、ated promptly whenever such features operate during the tests specified in 8.2 to 8.6. Do not change the set-up of the wheelchair except as specified for a test. EXAMPLE Removal and replacement of the test dummy or human test occupant; removal and replacement of batteries; operational check of non-d
45、rive control functions. 8.2 Cold operating conditions and resistance to condensation CAUTION During this test the wheelchair will become very cold. It is essential that appropriate safety precautions be taken to protect test personnel. a) Store the wheelchair for not less than 20 h in standard ambie
46、nt conditions with the wheelchair switched off. b) Carry out the functional check specified in Clause 9. c) Leaving the wheelchair switched on, subject it to a temperature of (25 2 5 + ) C for not less than 3 h. d) Inspect the wheelchair for evidence that any driven part has moved. ISO 7176-9:2009(E
47、) ISO 2009 All rights reserved 5e) Conduct the functional check specified in Clause 9 commencing within 5 min of completion of c) and continue testing until all visible parts of the control system have warmed such that no frost remains. f) Leave the wheelchair switched on for 1 h 5 min in standard a
48、mbient conditions. g) Inspect the wheelchair for evidence that any driven part has moved. h) Conduct the functional check specified in Clause 9 commencing within 5 min of completion of f). i) Repeat c) to h) for a total of two times, commencing as soon as practicable, and within 5 min, after complet
49、ing the functional test in h). NOTE 1 The test is repeated to provide a build-up of condensation. NOTE 2 The batteries can be replaced with charged ones after g) if it is necessary for the repetition of the test. 8.3 Hot operating conditions CAUTION During this test the wheelchair will become very hot. It is essential that appropriate safety precautions be taken to protect test personnel. a) Store the wheelchair for not less tha
