1、STD-BSI BS EN b072L-3-5-ENGL 1777 UI Lb24bb7 Ob32000 TTq BRITISH STANDARD Classification of environmental conditions Part 3. Classification of groups of environmental parameters and their severities Section 5. Ground vehicle installations The European Standard EN 60721-3-5 : 1997 has the status of a
2、 British standard ICs 19.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 60721-3-5 : 1997 IEC 60721-3-5 : 1997 STD-BSI BS EN b0721-3-5-ENGL 1777 Lb24bb7 Ob32001 930 BS EN 607213-6 : 1997 AmdNo. National foreword Date Text affected “his British Standard is the English
3、 ianguage version of EN 60721-3-5 : 1997. It is identical with IEC 6072155 : 1997. It supersedes BS EN 60721-3-5 : 1993 which is Withdrawn The UK participation in its prepadion was entrusted to Technical Commim, GEY50, Environmental testing of eleckotechnical products, which has the * responsibility
4、 to: - aid enquirers to understand the tm$ - present to the responsible intedonaiEuropean committee any enquiries on the interpretaion, or proposais for change, and keep the K interests informed; - monitor related intedonal and European developments and promulgate themintheuK. A list of organklions
5、represented on this committee can be obtained on requ - rail vehicles: trains, trams, cranes, etc.; - overland vehicles: four wheel drive cars, tractors, snow scooters, etc.; - handling and storage vehicles: fork-lift trucks (manual and robot), luggage transporters, etc.; - self-propelled machinery:
6、 diggers, harvesters, etc. A!?kzug!: this s?andarc! is riot designed for products forming part of the vehicles, the environmental condition classification may also be used for some exchangeable parts, installed in a similar way and in the same locations of the vehicle as products which do not form p
7、art of the vehicle. Only severe conditions which may be harmful to products are included. Conditions of storage and transportation are given in IEC 721-3-1 and IEC 721-3-2. The object of this standard is to classify the environmental parameters and their severities to which a product will be exposed
8、 under its conditions of use when installed in ground vehicles. A limited number of classes of environmental conditions are given, covering a broad field of application. The user of this standard should select the lowest class necessary covering each of the conditions of the intended use. Some guida
9、nce for this is given in annex A. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this section of IEC 721-3. At the time of publication, the editions indicated were valid. All normative documents are subject
10、to revision, and parties to agreements based on this section of IEC 721-3 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and IS0 maintain registers of currently valid International ,Standards. * * m STD=BS
11、I BS EN b0721-3-5-ENGL 1777 1b24bb7 Ob3200b 412 = Page 5 EN 60721-3-5 1997 IEC 721 -1 : 1990, Classification of environmental conditions - Part 1: Environmental parameters and their severities Amendment 1 (1992) Amendment 2 (1 995) IEC 721 -2-1 : 1982, Classification of environmental conditions - Pa
12、rt 2: Environmental conditions appearing in nature - Temperature and humidity Amendment 1 (1 987) IEC 721 -3-0: 1984, Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Introduction Amendment 1 (1987) IEC 721 -3-1 : 1997,
13、Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 7: Storage IEC 721 -3-2: 1997, Classification of environmental conditions - Fart 3: Classification of groups of environmental parameters and their severities - Sec
14、tion 2: Transportation 3 Definitions For the purpose of the present section of IEC 721-3, the following definitions apply, in addition to the definitions in clause 3 of IEC 721 -1. 3.1 internally mounted: The product is mounted internally in the vehicle, in a compartment which affords some protectio
15、n from the environment, ranging from complete isolation from external influences to protection only from precipitation when the vehicle is not moving. 3.2 protected from any external influences. externally mounted: The product is mounted on the outside of the vehicle. It is not 3.3 weatherprotected
16、location: A location in which the vehicle is protected from direct weather influences. The locality is assumed to be reasonably ventilated (at least natural air flow). 4 General Reference to IEC 721-3-0 is strongly recommended in order to avoid misuse of the classes defined in the other sections of
17、IEC 721 -3. The severities specified are those which will have a low probability of being exceeded. All specified values are maximum or limit values. These values may be reached, but do not occur permanently. Depending on the situation there may be different frequencies of occurrence related to a ce
18、rtain period of time. Such frequencies of occurrence have not yet been included in this standard, but should be considered for any environmental parameter. They should additionally be specified, if applicable. Information on the duration and frequency of occurrence is given, as clause 6, in amendmen
19、t 1 to IEC 721-3-0. Attention is drawn to the fact that combinations of the environmental parameters given may increase the effect on a product. This applies especially to the presence of high relative humidity in addition to biological conditions, or to conditions of chemically or mechanically acti
20、ve substances. STD-BSI BS EN b0721-3-5-ENGL 1797 Lb29bbS Ob32007 357 = Page 6 EN 60721-3-5 : 1997 5 Classification of groups of environmental parameters and their severities A limited number of classes for climatic conditions (K), special climatic conditions (Z), biological conditions (B), chemicall
21、y active substances (C), mechanically active substances (S), contaminating fluids (F) and mechanical conditions (M) are given in tables 1, lA, 2, 3, 4, 5 and 6. For a given product reference should be made to the total set of classes, for example 5K2/5B 1 /5C3/5S2/5F 1 15M2. The basis of these class
22、es is explained in clause A.2 of annex A. Climatic conditions in tropical areas as specified in classes 5K5 and 5K6 are explained in annex B. The combination of the lowest classes 5K1/5B1/5C1/5S1/5F1/5Ml forms the condition to which a product will be subjected when being installed in, for example, s
23、mooth running vehicles used only in very restricted conditions (indoors). The combination of the highest classes 5K4/5B3/5C3/5S3/5F3/5M3 covers installations in a wide number of types of vehicles, including locations with very severe conditions. For a number of environmental parameters and classes s
24、pecial severities are given for products installed in engine compartments. A class with higher digit conditions normally includes all classes with lower digits. For certain parameters it has not yet been possible to give quantitative severities. A summary of the conditions covered by the classes is
25、given in clause A.3 of annex A. STD*BSI BS EN b0721-3-5-ENGL 1777 m Zb2Libb7 Ob32008 295 m Page 7 EN 60721-3-6 : 1997 Environmental parameter a) Low air temperature b)Uighairtempemtin ventilated c4mpamnents (excep engine oonrpertments) or outdoor air c) High air temperature, air in unvenalared compa
26、rbnenls, except r3ngine aomparimenfs 2, djUi9hairtempere,airinengine comp9mnenfs e) Change of tempereture, air/air 3) 9 Gradual change of temperature, airiair, except in engine ccnpamnents p) Graciu8l change of temperature, airiair, in engine compcutments h) Change of temperatures airhater, axcept i
27、n engine oonipemnents 31 engine wmparbnenls 4 3) i) Change of temperature, air/water, in i) Change of temperaiure, airhnow, in k) Reiative humidity, not combined engine Eomparbnents only wi IIipM teniperature changes, excBpt in engine compartments of veMcles powered by intemal combusba,engines /j Re
28、letive humidity. not combined wth rid tenpereture changes, in engine campsrrbnsnl of vehicules powered by intemal combustion engines m) Relative humidity. combined with rapid temperefure changes, air/ir at high relative humWs. Not in dose praXimity to refrigemrated air conditioning systems n) Reiati
29、ve humiidity combined with -ci tempereiure changes, airiair, at high relative humidities. In ciose proximity to refrigemted air cwmMoning systems o) ute humidity combined with rspid temperature changes, air/air at high water mmnt s, Table 1 - Classification of climatic conditions Unit Class 5K1 5K2
30、5K3 5K4 5K4H 5K4L 55) 56) C +5 -25 -40 -65 -25 -65 +5 -20 C 40 +40 40 +55 +55 +40 +40 +55 C NO +70 +70 +85 +85 +70 +70 +85 “C +60 +70 +70 45 +85 +70 +70 +85 C NO -251+30 40/+30 -65/+30 -25/+30 -65/;mpratures down to the dew-point; at lower temperatures the relative humidity is assumed to be approxim
31、ately lo0 %. Severity value of 70 kPa covers worldwide application (altitudes up to 3000 m). For some restricted applications, a value may be selected from table 1A. ) The figure indicates the velocity of water and not the height of water accumulation. Further infomation on classes 5K5 (tropical dam
32、p) and 5K6 (tropical dry) is given in annex B. Class I 5B3 581 582 No No Presence of mould, fungus, etc. Presence of rodents or other animals harmful to products excluding termites I including termites Table 1A - Classification of special climatic conditions I Environmental parameter I Class I Unit
33、I Special condition Z I q) Low air pressure 521 kPa a4 ) Class 521 corresponds to an altitude of approximately 1400 m. Table 2 - Classification of biological conditions I Environmental parameter I I a) Flora I b) Fauna STD=BSI BS EN b0721-3-S-ENGL 1997 W Lb24bb7 Ob32010 943 Page 9 EN 60721-3-6 : 199
34、7 Environmental parameter a) Sand (including grit) b) Dust sedimentation Table 3 - Classification of chemically active substances J Unit Class 5s 1 5S2 5s3 g/m3 of air No o, 1 10 mg(m2.h) 1 ,o 34 3,O NOTES -I 1 2 3 The figures given are maximum values, oocuning wer a 30 min penad per day. The figure
35、s within brackets are mean values. Corresponding figures in fm3/m3 (at 20 OC and 1 01.3 kPa) can be found in IEC 721-1. Table 4 - Classification of mechanically active substances Table 5 - Classification of contaminating fluids STDoBSI BS EN b0721-3-5-ENGL 1997 W 1b2qbbS Ob32011 BAT Page 10 EN 60721
36、-3-5 : 1997 HZ m/s2 Table 6 - Classification of mechanical conditions 10-200 200-500 50 Environmental parameter m/s2 a) Stationary vibration, sinusoidal ) : displacement amplitude acceleration amplitude frequency range b) Stationary vibration, random ) : acceleration spectral density frequency range
37、 2) Non-stationary vibration, including shock *) : shock response spectrum type 1 peak acceleration i shock response spectrum type 11, peak acceleration i No Unit I I 5M1 d) Impact from foreign J bodies, stones 9-200 1 No 5 Class 5M2 3,3 10 15 2-9 9-200 200-500 I 03 10-200 200-500 1 O0 300 5M3 73 20
38、 40 !-E 8-200 200-50( 5 1 10-200 200-500 300 1 O00 20 ) The frequency range may be limited to 200 Hz also for classes 5M2 and 5M3, for products mounted on a structure with high internal damping. See fioure I. STD-BSI BS EN b0722-3-5-ENGL 1997 2b24bb7 Ob320L2 7Lb E Page 11 EN 60721-3-5 1997 100 200 6
39、00 O00 2000 Frequency Hr IIC -1 Example of durations for half-sine pulse: Spectrum type I: duration 11 ms Spectrum type II: duration 6 ms (first order maximax shock response spectra) For explanations see note 6 relating to table 1 of IEC 721 -1. Figure 1 - Model shock response spectra * * zr, Page 1
40、2 EN 60721-3-6 : 1997 Annex A (informative) Survey of conditions affecting the choice of environmental parameters and their severities A.l General In this annex the basis of the classes is explained. A survey of conditions affecting the choice of environmental parameters and their severities is give
41、n, together with a summary of the conditions covered by each class. A.2 Survey of conditions For each environmental parameter the various possible conditions which will result in different levels of environmental conditions are presented. An effort has been made to arrange the conditions in order of
42、 increasing severities. The first column of the tabulated subclauses A.2.1 to A.2.6 describes the conditions. In the vertical columns headed “Class” the letter “x” indicates the conditions covered by the class. The lowest class covering a certain condition may be found by reading horizontally from t
43、hat condition to the first “x” encountered. The procedure of finding an appropriate class as described above is valid for all the suSctauses, but the first part of subclause A.2.1 contains the additional factw of type of climaie, io which attention has to be paid. The lowest class covering a certain
44、 condition can thus be found by reading vertically down the relevant type of climate column to the first “x” in the horizontal line of the relevant condition, then reading horizontally to the first “x” encountered as previously described. The types of climate are described in IEC 721-2-1 and are: Ex
45、tremely Cold (except the Central Antarctic) Cold Cold Temperate Warm Temperate Warm Dry Mild Warm Dry Extremely Warm Dry Warm Damp Warm Damp, Equable It should be noted that the fact that a certain condition referred to in this annex is covered by a certain class does not necessarily mean that the c
46、lass describes, for each single parameter, the lowest environmental severity needed to cover the condition. NOTE - Accidental incidents are not included. In certain cases the possibility of their occurrence may, however, need to be taken into account. STD-BSI BS EN b0721-3-5-ENGL 1777 Lb24bb7 Ob3201
47、1i 577 = Page 13 EN 60721-3-8 : 1997 A.2.1 K Climatic conditions STD-BSI BS EN b0721-3-5-ENGL 1777 M 1b24bb7 Ob32015 425 M Page 14 EN 60721-3-5 : 1997 A.2. i K Climatic conditions (confinued) entering when windows, doors, lids, etc., are opened, or when outdoor air is drawn into the compartment, or
48、extemaily: vehicle moved between wan indoor and cold outdoor not roved between outdoors and - Protected from rain. Not subjected to water from oher (Note, see page q STD-BSI BS EN b0721-1-5-ENGL 1777 LbZLibbS Ob320Lb 3bL Page 15 EN 60721-3-5 1997 A.2.1 K Climatic conditions (continued) Conditions of
49、 installation 5K1 5K2 No +Mu +5 .X-X, X - No +60( -5 STD=BSI BS EN b0721-3-5-ENGL 1997 Lb24bb9 Ob320L7 2T8 Page 16 EN 60721-3-5 : 1997 A.2.1 K Climatic conditions (continued) I I Type of climats Condition of installation - m) Relaave humiiiy, Oombined with repid temperature CkqpS, et .*!? levds =f reiative humidily air/air. Not in dose proximily to rerngerated air conditioning “C Not subjected to significant partiy opened to outdoor air. Vehicles moved between indoors and outdoors. In compartments subjected to rain or water jets after
