इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 13773 (1993): Sleeves of insulating material for live working [ETD 36: Tools and Equipment for Live Working] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 37731 : 1883 IEC Pub 884 : 1880 SLEEVES FO GNITALUSNI SLAIRETAM ROF EVIL WO-RKING UDC 621’315-783 : 621’315’616-462 0 BIS 1993 BUREAU OF INDIAN STANDARDS MANAK BHAWAN, 8 BAHADUR SHAH EAFAR MARG NEW DELHI 110002 October 1983 Price Group 12 slooT and Equipment rof eviL Working lanoitceS Committee, TE 63 NATIONAL FOREWORD This Indian Standard which is identical with IEC Pub 984 ( 1990 ) ‘Sleeves of insulating material for live working’, issued by the International Electrotechnical Commission was adopted by the Bureau of Indian Standards on the recommendation of the Tools and Equipment for Live Working Sectional Committee ( ET 36 ) and approval of&he Electrotechnical Division Council. The text of IEC standard has been approved as suitable for publication as Indian Standard with- out deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following: a) Wherever the words ‘IEC Standard’ appear referring to this standard, they should be read as ‘Indian Standard’. In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist. The corresponding Indian Standards which are to be substituted in their place are listed below along with their degree of equivalence for the editions indicated: International Corresponding Indian Standard Degree of Standard Equivalence IEC Pub 50 (151) (1978) IS 1885 ( Part 74 ) : 3991 Electrotechnical Identical vocabulary: Part 74 Electrical Et magnetic devices I EC Pub 50 (601) (1985) IS 1885 ( Part 78) : 1993 Electrotechnical Identical vocabulary: Part 78 Generation, transmission & distribution of electricity - General IEC Pub 60-I (1973) IS 2071 ( Part 1 ) : 1974 Methods of high Identical voltage testing: Part 1 General definitions and test requirements ( first revision ) IEC Pub 410 (1973) IS 2500 ( Part 1 ) : 1992 Sampling inspection Technically tables: Part 1 Inspection by attributes and by equivalent count of defects ( first revision ) IEC 707 (1981) 11731 ( Part 1 ) : 1986 Methods of test for Technically determination of flammability of solid electrical equivalent insulating materials when exposed to an igniting source: Part 1 Horizontal specimen method 11731 ( Part 2 ) : 1986 Methods of test for determination of flammability of solid electrical insulating materials when exposed to an igniting source: Part 2 Vertical specimen method 0SI 2952 (1973) IS 1448 ( Part 69 ) : 1969 Methods of test for Technically petroleum and its products: Part 69 Flash and equivalent fire point by Cleveland (open) cup IS0 2977 (1974) IS 1448 ( Part 3 > 1984 Methods of test for Technically ~petroleum and its products : Part 3 Aniline equivalent point ( second revision ) IS0 3104 (1976) IS 1448 ( Part 25 ) : 1976 Methods of test for Technically petroleum and its products: Part 25 Determi- equivalent nation of kinematic and dynamic viscosity ( first revision ) The concerned technical committee has reviewed the provisions of IEC Pub 50 (121) (1978) and IEC Pub 212 (1971) referred in this adopted standard and has decided that they are acceptable for use in conjunction with this standard. Only the English language text in the international standard has been retained while adopting it in this Indian Standard. For the purpose of deciding whether a particular requirement of this standard is complied with, the find1 value, observed or calculated, expressing the results of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS13773:1993 IECPub 984:1990 Indian Standard SLEEVES FO GNITALUSNI SLAIRETAM ROF EVIL WORKJNG 1. Scope This international standard is applicable to insulating sleeves for the protection of workers from accidental contact with live electrical conductors, apparatus or circuits. 1.1 Five c-lasses of sleeve, differing in electrical characteristics, are provided and designated as: Class 0, Class 1, Class 2, C-lass 3 and Class 4. 1.2 Five categories of sleeve with different properties are provided, related to the following: resistance to acid, resistance to oil, .,resistance to ozone, combined resistance to oil and ozone, and also1 resistance to extreme low temperature. These are designated as Categories A, H, Z, S and C respectively. 1.3 Two styles of sleeve, differing in configuration, are provided and designated as straight taper and curved elbow. 2. Definitions For the purpose of this standard, the terms hereafter have the following mea~nitigs: Elastomer A generic term that includes rubbers, latex and elastomeric com- pounds. that may be natural or synthetic, or a mixture, or a’ combination of both. Type test A test of one or more devices made to a certain design to show that the design meets certain specifications. (IEV* 151-04-15). Routine test A test to which each individual device is subjected during or after manufacture to ascertain whether it complies with certain criteria (IEV 151-04-16). Jr eeS the International Electrotechnical Vocabulary (IEV) (IEC Publication 50). 1 IS 13773 : 1993 IEC Pub 984 : 1990 Sampling test A test. on a number of devices taken at random from a batch. (IEV 151-04-17). Acceptance test A contractual test to prove to the customer that t-he device meets certain conditions of its specification ( I EV 151-04-20). Shoulder roll The rolled or reinforced edge of an insulating sleeve nearest to the shoulder. Cuff roll The roll or reinforced edge of a sleeve at the cuff. Electrical puncture A disruptive breakdown through a solid insulant (IN 121-03-13). Flashover An arc by-passing an insulating body (IEV 121-03-14). Nominal voltage A suitable approxi mate value of voltage used to designate or identify a system (IEV 601-01-2 1). Composition The sleeves shall be manufactured of ~elastomers and produced by a seam~less process. The holes provided in sleeves, for the purposes of strap or harness attachments, shall have non-metallic reinforced edges, and .shall be nominally 8 mm in diameter. Classification‘ The sleeves covered under this standard shall be designated as follows : by class as Class 0, Class 1, Class 2, Class 3 and Class 4; by special properties, by the addition of a suffix as shown in table I; by style as described in Sub-clause 4.1.1. 2 IS 13773 : 1993 IEC Pub 994 : 1990 Table I Special properties - category Resistant to A Acid H Oil 2 Ozone s* Oil and ozone C Extreme low temperature * Category S combines the characteristics of Categories H snd Z. Guidance as to use in relation to nominal voltage a system Note.- of is given in Appendix A. 4.1 .l Style: Two styles are provided as indicated: Style A: Straight taper (see figure 1). Style B: Curved elbow (see figure 2). 5. Physical requirements 5.1 Shape 5.1 1 T~he shape of the straight taper sleeve is indicated in figure 1. 5.1.2 The shape of the curved elbow sleeve is indicated in figure 2. 5.2 Dimensions 5.2.1 Dimensions and tolerances are indicated i-n table II. Table II Dimensions* - - Dimensions (mm) Style Size A B ,C D Small 630 370 270 140 Style A (Figure 1) Medi urn 670 410 290 140 (Straight taper) large 7 20 450 330 175 Extra large 760 500 340 175 Small 630 370 290 145 Style B (Figure 2) Medium 670 410 310 14-5 (Curved elbow) 710 420 330 17,5 Large Extra large 750 460 330 l#O' * Tolerances shall be as follows Dimension A: ?15 mm; Dimension B: 515 mm; Dimension C: 215 mm; Dimension D: 2 5 mm. 3 IS 13773 : 1993 IEC Pub 984 : 1990 5.2.2 Straight taper and curved elbow sleeves: The dimensions are shown in figures 1 and 2. 5.2.3 To minimize problems of marking and identification, the following standard abbreviations may be used: small (S), medium (M), large (LG), extra large (XLG). Class 0, Class -1, Class 2, -,Class 3 and Class 4, right or left shall not be abbreviated (see Sub-clause 5.5). 5.3 Thickness 5.3.1 The maximum thickness of the elastomer on the flat surface (not ribbed area, if present) of a sleeve shall be as follows in order to obtain appropriate flexibility. Table III Maximum elastomer thickness Class mm 0 1.00 1 1.50 2 2.50 3 2.90 4 3.60 I‘ 5.3.2 The minimum thickness shall be determined only by the ability to pass the tests define d in Clauses 6 and 7. 5.3.3 Sleeves of Categories A, H, and Z may require additional thickness which shall not exceed 0.6 mm. 5.4 Workmanship ahd finish Sleeves shall be free on both inner and outer surfaces from harmful physical irregularities that can be detected by thorough test and inspection. Harmful physical irregularities shall be defined as any feature that disrupts the uniform, smooth surface contour, such as pinholes, cracks, blisters, cuts, conductive embedded foreign matter, creases, pinch marks, voids (entrapped air), prominent ripples and prominent mould marks. Non-harmful physical irregularities shall be defined as surface irregularities present on the inner and outer surfaces of the sleeve due to imperfections on form s or moulds or other imperfect~ions inherent in the manufacturing process. These irregularities appear as IS 13773: 1993 IEC Pub 984 : 1990 mould marks that look like cuts even though they are actually raised ridges of elastomer, indentations, or protuberances that are acceptable provided that: a) the depression is not larger than 1.6 mm in ~diameter, has rounded edges and no visible break in the surface, and cannot be seen on the opposite side when stretched over the thumb; 4) there are not more than five depressions as described in a) any- where on the sleeve and any two are separated by at least 15 mm; 6) the indentations, protuberances or mould marks tend to blend into a smooth surface upon stretching of the material; ‘d) the small projections or protuberances represent only a small amount of excess elastomer that cannot be readily removed with the finger and these projections do not appreciably affect the stretch- ing-of the elastomer.- 5.5 Marking 5.5.1 Each sleeve which is claimed to comply with the requirements of, this standard shall be marked with the following (see figure 3 and Sub- clause 5.2.3): a) symbol (double triangle); b) name, trade mark, or midentificatmion of the manufacturer; c) category if applicable; d) size; e1 class; f) right or left; g] month -and year of manufacture. In addition, each sleeve shall have a group ~of rectangles or other suitable means to identi f y when the sleeve was pJt into service and the dates of periodic inspe ction and testing. 5.5.2 The marking shall be durable and shall not impair the quality of the sleeve. The durabi~lity of the marking is checked by rubbing the marking for 15 s with a piece of -lint-free cloth soaked in soapy water and then rubbing it for a further 15 s with a piece of lint-free cloth soaked in petrol (gas01 i ne) . At the end of the test, the marking must remain legible. 5.5.3 Any additional marking shall be subject to agreement between the manufacturer and the customer. .5.5.4 When a colour code is used the colour of the symbol (double triangle) shall correspond to the following code: Class 0: red Class 1: white Class 2: yellow Class 3: green Class 4: orange 5