AS 1939 1990 degrees of protection provided by enclosures fo

Title AS 1939-1990 Degrees of protection provided by enclosures for electrical equipment (IP Code) Licensee Licensed to LUU MINH LUAN on 25 Feb 2002 Conditions of use This is a licensed electronic copy of a document where copyright is owned or managed by Standards Australia International Your licence is a single user licence and the document may not be stored, transferred or otherwise distributed on a network You may also make one paper copy of this document if required Web Check-up AS 1939—1990 IEC 529 (1989) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Standard Degrees of protection provided by enclosures for electrical equipment (IP Code) [IEC Title: Degrees of protection provided by enclosures (IP Code)] Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited This Australian Standard was prepared by Committee EL/26, Protective Enclosures of Electrical Equipment It was approved on behalf of the Council of Standards Australia on 15 June 1990 and published on 15 October 1990 The following interests are represented on Committee EL/26: Australian Consumers Association Australian Electrical and Electronic Manufacturers Association Australian Institute of Petroleum Department of Defence Department of Public Works, N.S.W Electrical Apparatus Approvals Authorities Electrical Testing Laboratories Electricity Supply Association of Australia Additional interests participating in preparation of Standard: Other specific equipment Committees Review of Australian Standards To keep abreast of progress in industry, Australian Standards are subject to periodic review and are kept up to date by the issue of amendments or new editi ons as necessary It is important therefore that Standards users ensure that they are in possession of the latest edit ion, and any amendments thereto Full detail s of all Australian Standards and related publi cati ons wil l be found in the Standards Australi a Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives detail s of new publi cati ons, new edit ions and amendments, and of withdrawn Standards Suggesti ons for improvements to Australi an Standards, addressed to the head off ice of Standards Australi a, are welcomed Notif ication of any inaccuracy or ambiguit y found in an Australi an Standard should be made without delay in order that the matter may be investigated and appropriate action taken This Standard was issued in draft form for comment as DR 88097 AS 1939—1990 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Standard Degrees of protection provided by enclosures for electrical equipment (IP Code) First publi shed as AS C302—1965 Revised and redesignated AS 1939—1976 Second editi on 1981 Thir d editi on 1986 Fourth edit ion 1990 PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 7262 6415 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited PREFACE This Standard was prepared by the Standards Australia Committee on Protective Enclosures of Electrical Equipment to supersede AS 1939—1986, Classification of degrees of protection provided by enclosures for electrical equipment It is identical with and has been reproduced from IEC 529 (1989), Degrees of protection provided by enclosures (IP Code) Under arrangements made between Standards Australia and the International Electrotechnical Commission (IEC), users of this Australian Standard are advised of the following: (a) Copyright is vested in Standards Australia (b) The number of this Standard is not reproduced on each page; its identity is shown only on the cover and title pages This edition retains the basic principle of the two-numeral code In general, equipment complying with the 1986 edition for a particular IP code would comply with this edition for the same IP code This edition differs considerably from the 1986 edition In particular, the previous second characteristic numeral 6D, Protected against driving rain, has been discarded, and provision is made for the IP Code to be optionally extended by an additional letter A, B, C, or D (after the second characteristic numeral) where the protection of persons against access to hazardous parts is higher than that indicated by the first characteristic numeral, or where the first characteristic numeral is unspecified Details of differences between this edition and the 1986 edition are given in Australian Appendix A Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard For the purposes of this Australian Standard, the IEC text should be modified as follows: (i) Substitute a full point for a comma as a decimal marker (ii) In the footnote (page 16) to Clause and in Annex B, substitute the ‘Executive Officer of Standards Australia Committee EL/26’ for the ‘Secretariat of Technical Committee No 70’ (iii) Replace references to other publications by references to Australian Standards as follows: Reference to International Standard IEC 50 International Electrotechnical Vocabulary (IEV) 50(826) Chapter 826: Electrical installations of buildings 68 Environmental testing 68-1 71 Part 1: General and guidance Insulation co-ordination 71-2 536 Part 2: Application guide Classi fication of electrical and electronic equipment with regard to protection against electric shock Australian Standard AS 1852 Int ernational elect rotechni cal vocabulary 1852(826) E l ect r i cal i nst al l at i ons of buildings 1099 Base environmental testing procedures for electrotechnology 1099.1 Part 1: General 1824 Insulation co-ordination (phaseto-earth and phase-to-phase, above kV) 1824.2 Part 2: Application guide (no equivalent) For first characteristic numerals and relating to the ingress of dust, it should be noted that compliance is also required with all lower degrees of protection (first numerals 4, 3, 2, 1) While this may not be clear from Tables II and VII, it is specifically mentioned in Clause (Paragraph 3) Attention is drawn to the publication of two Supplements to this Standard, AS 1939 Supplements and 2, being A3-size wall charts Wall chart displays in text and diagrams the dual protection indicated by first characteristic numerals and the protection against ingress of water indicated by second characteristic numerals Wall chart displays the various combinations of first characteristic numeral and additional letter; it also depicts basic details of access and object probes Wall charts are intended as aids to the reading of this Standard Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited  Copyri ght STANDARDS AUSTRALIA Users of Standards are reminded that copyri ght subsists in all Standards Australi a publications and soft ware Except where the Copyri ght Act all ows and except where provided for below no publications or software produced by Standards Austr alia may be reproduced, stored in a retri eval system in any form or transmitt ed by any means without pri or permission in wri ti ng fr om Standards Australi a Permission may be conditi onal on an appropriate royalt y payment Requests for permission and information on commercial soft ware royalti es should be dir ected to the head off ice of Standards Australi a Standards Australi a wil l permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Austr alia Standards Australi a wil l also permit the inclusion of its copyri ght material in computer soft ware programs for no royalt y payment provided such programs are used exclusively in-house by the creators of the programs Care should be taken to ensure that material used is fr om the current editi on of the Standard and that it is updated whenever the Standard is amended or revised The number and date of the Standard should therefore be clearly identif ied The use of material in pri nt form or in computer soft ware programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty This policy may be vari ed by Standards Austr alia at any ti me CONTENTS Page 5 10 12 14 15 16 17 17 19 21 24 Tests for protection against access to hazardous parts indicated by the additional letter 29 FIGURES 31 ANNEX A (informative) – Examples of IP Coding for the verification of protection of low-voltage equipment against access to hazardous parts 37 ANNEX B (informative) – Summary of responsibilities of relevant Technical Committees 43 AUSTRALIAN A PPENDIX A – Differences between 1990 and 1986 editions of this standard 45 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 10 11 12 13 14 15 Scope Object Definitions Designations Degree of protection against access to hazardous parts and against solid foreign objects indicated by the first characteristic numeral Degrees of protection against ingress of water indicated by the second characteristic numeral Degrees of protection against access to hazardous parts indicated by the additional letter Supplementary letters Examples of designations with the IP Code Marking General requirements for tests Tests for protection against access to hazardous parts indicated by the first characteristic numeral Tests for protection against solid foreign objects indicated by the first characteristic numeral Tests for protection against water indicated by the second characteristic numeral AUSTRALIAN STANDARD STANDARDS AUSTRALIA Australian Standard Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Degrees of protection provided by enclosures for electrical equipment (IP Code) Scope This standard applies to the classification of degrees of protection provided by enclosures for electrical equipment with a rated voltage not exceeding 72,5 kV Object The object of this standard is to give: (a) Definitions for degrees of protection provided by enclosures of electrical equipment as regards: (1) protection of persons against access to hazardous parts inside the enclosure; (2) protection of the equipment inside the enclosure against ingress of solid foreign objects; (3) protection of the equipment inside the enclosure against harmful effects due to the ingress of water (b) Designations for these degrees of protection (c) Requirements for each designation COPYRIGHT (d) Tests to be performed to verify that the enclosure meets the requirements of this standard It will remain the responsibility of individual Technical Committees to decide on the extent and manner in which the classification is used in their standards and to define “enclosure” as it applies to their equipment However, it is recommended that for a given classification the tests not differ from those specified in this standard If necessary, complementary requirements may be included in the relevant product standard A guide for the details to be specified in relevant product standards is given in Annex B For a particular type of equipment, a Technical Committee may specify different requirements provided that at least the same level of safety is ensured This standard deals only with enclosures that are in all other respects suitable for their intended use as specified in the relevant product standard and which from the point of view of materials and workmanship ensure that the claimed degrees of protection are maintained under the normal conditions of use This standard is also applicable to empty enclosures provided that the general test requirements are met and that the selected degree of protection is suitable for the type of equipment Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Measures to protect both the enclosure and the equipment inside the enclosure against external influences or conditions such as – – – – – – – – – mechanical impacts corrosion corrosive solvents (e.g cutting liquids) fungus vermin solar radiation icing moisture (e.g produced by condensation) explosive atmospheres and the protection against contact with hazardous moving parts external to the enclosure (such as fans), are matters for the relevant product standard Barriers external to the enclosure and not attached to it and obstacles which have been provided solely for the safety of personnel are not considered as a part of the enclosure and are not dealt with in this standard Definitions For the purpose of this standard, the following definitions apply: 3.1 Enclosure A part providing protection of equipment against certain external influences and, in any direction, protection against direct contact (IEV 826-03-12)* * IEC 50(826) COPYRIGHT Note — This definit ion taken from the existing Internati onal Electrotechnical Vocabulary (I EV) needs the following explanations under the scope of this standard: 1) Enclosures provide protecti on of persons or livestock against access to hazardous part s 2) Barr iers, shapes of openings or any other means – whether attached to the enclosure or formed by the enclosed equipment – suit able to prevent or li mit the penetrati on of the specifi ed test probes are considered as a part of the enclosure, except when they can be removed without the use of a key or tool 3.2 Direct contact Contact of persons or livestock with live parts (IEV 826-03-05) Note — This IEV definit ion is given for informati on In this standard “Dir ect contact” is replaced by “Access to hazardous part s” Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 3.3 Degree of protection The extent of protection provided by an enclosure against access to hazardous parts, against ingress of solid foreign objects and/or against ingress of water and verified by standardized test methods 3.4 IP Code A coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of water and to give additional information in connection with such protection 3.5 Hazardous part A part that is hazardous to approach or touch 3.5.1 Hazardous live part A live part which, under certain conditions of external influences, can give an electric shock (see IEC 536, at present Document 64(CO)196) 3.5.2 Hazardous mechanical part A moving part, other than a smooth rotating shaft, that is hazardous to touch 3.6 Protection provided by an enclosure against access to hazardous parts The protection of persons against – contact with hazardous low-voltage live parts, – contact with hazardous mechanical parts, – approach to hazardous high-voltage live parts below adequate clearance inside an enclosure Note — This protecti on may be provided – by means of the enclosure itself, – by means of barri ers as part of the enclosure or distances inside the enclosure 3.7 Adequate clearance for protection against access to hazardous parts A distance to prevent contact or approach of an access probe to a hazardous part COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 31 444/89 Materi al: metal, except where otherwise specifi ed Linear dimensions in mil li metr es Tolerances on dimensions without specif ic tolerance: on angles: 0/−10′ on li near dimensions: up to 25 mm: 0/−0,05 over 25 mm: ±0.2 Both joints shall permit movement in the same plane and the same direction through an angle of 90° wit h a to +10° tolerance FIG — Jointed test finger COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 32 FIG — Test device to verify protection against dust (dust chamber) COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 33 Dimensions in mill imetres FIG — Test device to verify protection against vertically falling water drops (drip box) COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 34 Dimensions in mill imetres Note — The range of holes is shown as for second characteri stic numeral (see 14.2.3a)) FIG — Test device to verify protection against spraying and splashing water; second characteristic numerals and (oscillating tube) COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 35 Viewe d acco rd ing to arr ow A (with shield remo ved ) 448/89 Dimensions in mill imetres 121 holes of ∅ 0,5: hole at the centre inner cir cles of 12 holes at 30° pit ch outer cir cles of 24 holes at 15° pit ch Moving shield — Aluminium Spray nozzle — Brass FIG — Hand-held test device to verify protection against spraying and splashing water: second characteristic numerals and (spray nozzle) COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 36 Dimensions in mill imetres D′ = 6,3 for the test of 14,2,5 (second characteristi c numeral 5) D′ = 12,5 for the test of 14,2,6 (second characteri stic numeral 6) FIG — Test device to verify protection against water jets (hose nozzle) COPYRIGHT 37 ANNEX A (informative) EXAMPLES OF IP CODING FOR THE VERIFICATION OF PROTECTION OF LOW-VOLTAGE EQUIPMENT AGAINST ACCESS TO HAZARDOUS PARTS Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Ref No Two numerals Additi onal lett er Two numerals+ additi onal lett er 0X — 0X 1X A 1X 1X A 1X Situation COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 38 Ref No Situation Two Additi onal Two numerals+ numerals lett er additi onal lett er COPYRIGHT 1X A 1X 1X B 1XB 1X B 1XB Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 39 Ref No Situation Two Additi onal Two numerals+ numerals lett er additi onal lett er COPYRIGHT 1X D 1XD 1X D 1XD 40 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Ref No Two numerals Additi onal lett er Two numerals+ additi onal lett er 2X B 2X 10 2X B 2X 2X C 2XC Situation 460/89 11 461/89 COPYRIGHT 41 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Ref No Two numerals Additi onal lett er Two numerals+ additi onal lett er 12 2X D 2XD 13 3X C 3X 3X D 3XD 4X D 4X Situation 14 464/89 15 465/89 COPYRIGHT 42 IP CODE of examples in Annex A First characteristi c numeral — A B C D IP0X (1) — — — — — IP1X (2, 3, 4) IP1XB (5, 6) — IP1XD (7, 8) — — IP2X (9, 10) IP2XC (11) IP2XD (12) — — — IP3X (13) IP3XD (14) — — — — IP4X (15) The numerals in parentheses to the reference numbers in this annex Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Note — Additi onal letter COPYRIGHT 43 ANNEX B (informative) SUMMARY OF RESPONSIBILITIES OF RELEVANT TECHNICAL COMMITTEES The IP Code for classifying the degrees of protection provided by enclosures is intended to be used for most types of electrical equipment It should not be assumed that this standard is suitable to cover all specific details of the various types of equipment It is the responsibility of relevant Technical Committees to specify in their relevant product standards all details concerning the application of the IP Code to a particular type of equipment Marking with the IP Code indicates a claim for compliance with all the applicable requirements of this standard and also with any complementary requirements specified in the appropriate product standard Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited The following list is given as a guide for the detailed information to be specified in product standards: 1) extent and manner to which the IP Code shall be used (see Clause 4); 2) definition of “enclosure” as it applies to the particular type of equipment (see Clause 2); 3) the protection of both the enclosure and the equipment inside the enclosure against external influences or conditions (see Clause 2); 4) degree of protection applied to hazardous moving parts (such as fans) external to the enclosure (see Clause 2); 5) the range of application if enclosures are exposed to temporary or continuous immersion (see Clause 6); 6) the application of “additional letters” for protection against access to hazardous parts provided by internal barriers or distances, if necessary (see Clause 7); 7) supplementary information to be given by “supplementary letters”, if any (see Clause 8); 8) the Secretariat of TC 70 shall be consulted before any new supplementary letter is introduced and the additional test procedure shall be stated (see Clause 8); 9) details for the marking (see Clause 10); 10) atmospheric conditions for testing if different from 11.1; 11) state and condition of test samples if different from the “general requirements for tests” (see 11.2); 12) details of test conditions (see 11.2) such as: – number of samples – mounting, assembling, positioning – pre-conditioning – whether energized or not – whether parts in motion or not; 13) application of the general requirements for tests and the acceptance conditions on drain-holes and ventilation openings (see 11.3); COPYRIGHT 44 14) guidance for the interpretation of test results and for the acceptance conditions (see 11.3); 15) the working voltage, if applicable (see 12.3.1 and 12.3.2); 16) the category of the enclosure, indicating whether a pressure difference due to thermal cycling effects is present or not (see 13.4); 17) the location of the suction hole for the dust test if not in the vicinity of vulnerable parts (see 13.4); 18) the quantity and location of dust deposits permitted without affecting the safe operation (see 13.5.2); 19) the test device for IPX3 and IPX4 tests (oscillating tube or spray nozzle) (see 14.2.3 and 14.2.4); 20) the type of support for the enclosure (if not perforated) during IPX4 test (see 14.2.4); 21) the water temperature if the equipment is energized or running during the immersion test (see 14.2.7 d)); Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 22) conditions for the continuous immersion test (see 14.2.8); 23) the acceptance conditions following the water tests, in particular the amount of water which may be allowed to enter and the details of any dielectric strength test (see 14.3); 24) the acceptance conditions if water can accumulate to reach live parts (see 14.3) COPYRIGHT 45 AUSTRALIAN APPENDIX A DIFFERENCES BETWEEN 1990 AND 1986 EDITIONS OF THIS STANDARD (Informative) A1 SCOPE This Appendix details the differences between the 1990 and 1986 editions of this Standard NOTE: Minor details and editorial changes are not listed In cases of doubt, reference should be made to the relevant texts A2 LIST The differences are as follows (the references are to the 1990 edition): (a) The IP Code is expanded by the provision of an optional additional letter, A, B, C, or D (see Clauses 4.2 and 7) (b) For verifying compliance with the first characteristic numerals, four access probes and four object probes are specified instead of the five test devices specified previously (see Tables VI and VII): (i) For first characteristic numeral 1—two 50 mm spheres, one with and one without a handle (ii) For first characteristic numeral 2—a jointed test finger and a 12.5 mm sphere Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited NOTES: Only the 80 mm jointed portion of the test finger is used for verifying compliance with first numeral The face of the 50 mm × 20 mm section has been designated a stop face This has no significance for first numeral 2, but is an important consideration for additional letter B (see Clause 15.2) The diameter of the sphere has been increased from 12 mm to 12.5 mm, with a tolerance of +0.2, −0 mm (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (iii) For first characteristic numeral 3—two 2.5 mm diameter test rods, one with a spherical stop face (iv) For first characteristic numeral 4—two mm diameter test wires, one with a spherical stop face For first characteristic numerals and 6, compliance also with lower ranked numerals 4, 3, 2, 1, is now specified and the compliance might need to be proven by test (see Clause 5, Paragraphs and 4) For first characteristic numeral 6, the enclosure is deemed to be category (see Clause 13.4) and the dust test is carried out with underpressure (suction) See Table VII and Clause 13.6 The previous definition of enclosed space (‘ actually containing dangerous parts’) has been omitted See, however, notes to Table II and Clause 13.3 For second characteristic numerals and 2, the test device is specified more simply, omitting details of drip holes (see Figure 3) For second characteristic numeral 1, the specified drip rate is markedly reduced (see Table VIII) and the enclosure is required to be rotated with some eccentricity (see Clause 14.2.1) For second characteristic numerals and 4, provision is made for testing larger enclosures using the oscillating tube, the maximum radius being increased from 1000 mm to 1600 mm (see Figure 4) Eight sizes of oscillating tube are suggested, ranging from 200 mm to 1600 mm radius, at intervals of 200 mm (see Table IX) A water flow-rate is specified (depending on the number of holes) rather than a supply pressure to the tube (see Table VIII) For second numeral 3, the enclosure may be mounted above or below the horizontal centreline of the oscillating tube if this is necessary to wet all parts of the enclosure (see Clause 14.2.3) Second characteristic numerals and are redesignated ‘for temporary immersion’ and ‘for continuous submersion’ respectively (see Clause 4.2) As previously, these numerals not imply compliance with lower numerals, 6, 5, 4, etc; however provision is now made for dual IP coding, e.g IPX5/IPX7, to indicate dual compliance (see Clause 6) For all second characteristic numeral tests, the temperature of the water should be within K of that of the enclosure under test, otherwise special precautions apply (see Clauses 14.2 and 14.2.7) The previous second characteristic numeral 6D ‘Protected against driving rain’ has been omitted as it has received no recognition outside Australia, and because it could not co-exist with the new additional letters, A, B, C, and D (see Item (a)) The supplementary letter H has been added (see Clause 8); supplementary letter W has been moved to last position (see Clause 4.1) Provision is made for the coding and testing of empty enclosures (see Clause 11.5) Requirements for electrical tests after water tests have not been retained because of lack of acceptance outside Australia, (see Clause 14.3) NOTE: It is considered that an enclosure where the equipment fails electrical tests would usually fail water entry requirements (o) The previous requirement (AS 1939, Amdt 2) re marking of single and multiple designations has been omitted NOTE: The applicability of a single designation to all normal conditions of use is considered to be obvious, as is the need for multiple designations to be qualified to indicate the use to which each refers The relative prominence of designations is considered a matter for the relevant product Standard COPYRIGHT ... prohibited Degrees of protection provided by enclosures for electrical equipment (IP Code) Scope This standard applies to the classification of degrees of protection provided by enclosures for electrical... was prepared by the Standards Australia Committee on Protective Enclosures of Electrical Equipment to supersede AS 1939—1986, Classification of degrees of protection provided by enclosures for... 72,5 kV Object The object of this standard is to give: (a) Definitions for degrees of protection provided by enclosures of electrical equipment as regards: (1) protection of persons against access