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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 5656 (1970): Cotton braids for sleevings [TXD 12: NarrowFabrics, Webbings and Braids]

IS : 5656 -1970

Indian Standard SPECIFICATION FOR

COTTON BRAID FOR SLEEVINGS (First Reprint JULY 1983 )

UDC 677.75:621.315.671

© Copyright 1970 I N D I A N STANDARDS INSTITUTION

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

MEW DELHI 110002

Gr 2 August 1970

IS : 5656 - 1970

Indian Standard SPECIFICATION FOR

COTTON BRAID FOR SLEEVINGS

Narrow Fabrics, Webbings and Braids Sectional Committee, TDC 25

Chairman Representing

SHRI B. B. JOSHI The Textile Appliances & Instruments Co Pvt Ltd, Baroda

Members SHRI S. AGARWALA Delhi Niwar and Tape Manufacturers' Association,

Delhi DR N. P. BADVE Indian Woollen Mills' Federation. Bombay SHRI N. S. BALLAL W. H. Brady & Co Ltd, Bombay SHRI A. K. CHOUDHURI West Bengal Tape Manufacturers' Association,

Calcutta SHRI SRIGOPAL SONI ( Alternate ) SHRI J. N. GREEN Fenner & Cockill Ltd, Madurai

SHRI R. LAKSHMINARAYANAN (Alternate) SHRI B. T. JAGASIA The Millowners' Association, Bombay SHRI V. N. KEDIA Indian Jute Mills Association. Calcutta SHRI B. R. KOHLI The National Small Industries Corporation Ltd.

New Delhi SHRI K. NACARAJAN Ministry of Defence ( DGI )

SHRI H. D. GUPTRLP ( Alternate ) DR K. I. NARASIMHAN Office of the Textile Commissioner, Bombay

SHRI D. G. CHITRE ' Alternate ) SHRI H. P. PATEL The Ahmedabad Millowners' Association,

Ahmed a bad SHRI A. K. PRAMANICK Inspection Wing. Directorate General of Supplies &

Disposals, New Delhi SHRI B. P. SENGUPTA ( Alternate ) SHRI G. D. PIROHIT Lantern Manufacturers .Association, Calcutta SHRI M. K. SANGHAVI Madhu Fasteners Co. Bombay SHRI SUDHIR P. THACKER Nylo Plast Industries Private Ltd. Bombay SHRI P. G. THANAWALA M. Best Cotton Rope Mfg Co, Bombay

SHRI M. G. THANAWALA ( Alternate ) SHRI S. B. TODI Association of Merchants & Manufacturers of Textile

Stores & Machinery ' India ), Bombay SHRI S. M. CHAKRABORTY, Director General, ISI ( Ex-officio Member)

Director ( Tex ) Secretary

SHRI P. VENKATARAMAN Deputy Director ( Tex ), ISI

(Continued on page 2 )

I N D I A N STANDARDS I N S T I T U T I O N MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI

1

IS : 5656 – 1970 (Continued from page 1)

Narrow Fabrics and Braids for Electrical Purposes Subcommittee, TDC 25 : 3

Convener Representing

SHRI A.K. CHOUDHURI West Bengal Tape Manufacturers’ Association, Calcutta Members SHRI SRIGOPAL SONI (Alternate to

Shri A.K. Choudhuri) SHRI D.C. CHOUDHURI Industrial Weavers Private Ltd, Calcutta SHRI K.C. CHOUDHURI (Alternate) SHRI KAMALNAYAN General Radio & Appliances Ltd, Bombay SHRI S.V. SHARMA (Alternate) SHRI HORENDRA LALL PAUL G.P. Industries (India), Calcutta SHRI A.K. PRAMANICK Inspection Wing, Directorate General of Supplies & Disposals, New Delhi SHRI A.T. BASAK (Alternate) SHRI RAJAT RANJAN ROY Orient General Industries Ltd, Calcutta SHRI I.M. SENGUPTA Associated Electrical Industries Mfg Co Pvt. Ltd., Calcutta SHRI V. SUBRAMANIAN Heavy Electricals (India) Ltd, Bhopal SHRI K.G. THANAWALA All India Ropes, Tapes and Cordages Manufacturers Association, Bombay

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IS : 5656 – 1970 Indian Standard

SPECIFICATION FOR COTTON BRAID FOR SLEEVINGS

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 25 May 1970, after the draft finalized by the Narrow Fabrics, Webbings and Braids Sectional Committee had been approved by the Textile Division Council. 0.2 The braid conforming to this specification are intended to be used in the manufacture of sleevings used for insulting ends of coils in electrical equipment. 0.3 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. 1. SCOPE 1.1 This standard prescribes constructional details and other particulars of six varieties of cotton braid meant for making sleevings. 1.2 This standard does not specify the general appearance, fee, etc, of the braid. 2. GENERAL REQUIREMENTS 2.1 yarns – The cotton yarns used for the braid and the core should be satisfactory in evenness and reasonable free from neps, slubs, knots, kinks and other spinning defects. The yarns should be free from size and materials. The approximate count of the braid yarn shall be 30 tex X 2 (208/2). The core yarn shall be 2-pay and of suitable count. 2.2 Braid – The braid should be smoothe and free from knots, kinks or projections, broken or loose yarn ends and other manufacturing imperfections which affect its appearance or serviceability. It shall be free from added matter. * Rules for rounding off numerical values (revised);

3

IS : 5656 : 1970 3. SPECIFIC REQUIREMENTS 3.1 The braid of a particular variety shall comply with the requirements of Table 1. 3.2 Length – Length of the braid in a ball shall be 50 m or 100 m or as agreed to between the buyer and the seller. It shall not be less than the declared or marked length. 4. PACKING AND MARKING 4.1 The braid shall be wound in the form of balls. Each ball shall be tired with a label bearing the following information: a) Name of the material; b) Width or diameter as the case may be; c) Length of the braid; d) Manufacturer’s name, initials, or trade-mark, if any; and e) Year of manufacture. 4.1.1 Each ball may also be marked with the ISI Certification Mark. NOTE – The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution (Certification Marks) Act, and the Rules and Regulation made thereunder. Presence of this mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard, under a well-defined system of inspection, testing and quality control during production. This system, which is devised and supervised by ISI and operated by the producer, has the further safeguard that the products as actually marketed are continuously checked by ISI for conformity to the standard. Details of conditions, under which a licence for the use of the ISI Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution. 4.2 A set of 10 such balls shall be wrapped in polyethylene film and the sets packed in bundles or cases as agreed to between the buyer and the seller. 5. SAMPLING 5.1 Lot – The quantity of braid of the same variety delivered to one buyer against one dispatch note shall constitute a lot. 5.2 The conformity of a lot to the requirements of this standard shall be determined on the basis of the tests carried out on the samples taken from it. 5.3 Unless otherwise agreed to between the buyer and the seller, the number of balls to be selected at random from a lot shall be in accordance with Table 2.

4

IS : 5656 – 1970

TABLE 2 SAMPLE SIZE (Clause 5.3)

NO. OF BALLS IN THE – NO. OF BALLS TO BE LOT SELECTED (1) (2) Up to 150 3 151 to 300 4 301 to 500 5 501 and above 7 5.4 For evaluating the characteristics specified under 3, the balls selected as in col 2 of Table 2 shall constitute the test sample. 5.5 Criteria for Conformity – The lot shall be considered to be in conformity with the requirements of this standard it the conditions given below are satisfied:

a) From the observed values for flat width or diameter of braid, plaits per 30 cm, weight per 100 m, and pH value, the average X and range R are calculated and the values of the expressions X – 0.6 R and X + 0.6 R lie within the limits specified.

b) From the test results for breaking load, the average X and the range R are calculated for each characteristic and the value of the expression X – 0.6 R is greater than or equal to the specified value.

c) All the test specimens tested for the number of strands in the braid and the core and the number of yarns per strand satisfy the corresponding requirements.

d) In the case of length, the length of braid in each ball is not less than the specified, declared or marked length. If it is, the mean percentage of deficiency in length is calculated and applied to the lot.

APPENDIX A

(Table 1)

METHODS OF TEST A-1. ATMOSPHERIC CONDITIONS FOR CONDITIONING AND TESTING OF TEST SPECIMENS A-1.1 Unless otherwise provided for in an agreement between the buyer and the seller, the test specimens shall be conditioned to moisture equilibrium in a standard atmosphere at 65 ± 2 percent relative humidity and

6

IS : 5656 - 1970

27° ± 2°C temperature (see also IS : 196-1966* ). If possible, tests shall made in this standard conditioning atmosphere otherwise they shall be made as quickly as possible but not later than 15 minutes after the removal of the test specimen from the standard atmosphere.

A-2. FLAT WIDTH OR DIAMETER

A-2.1 Test Specimen — Each roll in the sample shall constitute a test specimen.

A-2.2 Procedure — Lay the specimen on; a table under a tension just' sufficient to straighten it without undue stretching. Measure the width ( or diameter) to the nearest 0.5 mm. Similarly measure the width, (or diameter) in at least 5 different places and take the average. Repeat the test with the remaining test specimens. ;.

A-3. NUMBER OF YARNS PER STRAND AND NUMBER OF STRANDS IN THE BRAID AND CORE

A-3.1 Test Specimen — From each ball in the test sample ( see 5.4), cut a piece measuring approximately 15 cm. Each such piece shall constitute a test specimen.

A-3.2 Procedure—Take a test specimen- From one of its ends remove the interlacings, count the number of strands forming the braid and the core and the number of yams in each strand. Repeat the test with the remaining test specimens

A-4. PLAITS PER 30 CENTIMETRES

A-4.1 Test Specimen — For the purpose of this test, cut a length of braid, measuring approximately 50 cm from each ball in the test sample ( see 5.4 ). Each such piece shall constitute a test specimen.

A-4.2 Apparatus A-4.2.1 Twist Tester — The twist tester shall be provided with two clamps, one of which

shall be capable of sliding and adjustable at any convenient distance from the other clamp. It shall also be provided with a tensioning device.

A-4.3 Procedure A-4.3.1 Take a dark coloured thread of approximately the same count as the strands in the

braid. Tie one end of the coloured thread to any one of the strands of the test specimen. Hold the other end= of the tied strand

*Atmospheric conditions for testing (revised).

7

IS : 5656 – 1970

and pull it out the braid so as to replace the strand by the coloured thread in the body of the braid.

A-4.3.2 Set the clamp of the twist tester at a distance of 30 cm.

A-4.3.3 Mount the test specimen prepared as in A-4.3.1 on the twist tester applying a tension equal to 500gf. Count the number of floats of the coloured thread on the surface of the braid in a straight line parallel to the axis of the braid. This shall be the number of plaits per 30 cm.

NOTE – The number of times a strand turns round the braid while interlacing with other strands shall be taken as the number of plaits in the braid. The turns of the strand round the braid shall be determined by counting the floats of the strand on the surface of the braid in a straight line parallel to the axis of the braid.

A-4.3.4 Repeat the test with the remaining test specimens.

A-5 WEIGHT PER 100 METRES

A-5.1 Test Specimen – For the purpose of this test, cut a piece of braid approximately 4 m in length from each of the balls in the test sample (see 5.4). Each such piece shall constitute a test specimen.

A-5.2 Procedure

A-5.2.1 Take a test specimen and apply a tension equal to 100gf. After 60 ± 5 seconds, place two marks on the braid 3 m apart.

NOTE – The tension may be applied in a breaking load testing machine. It may also be applied by fixing one end of the braid to a peg and passing the braid around a pulley and hanging the desired load at the other end.

A-5.2.2 Release the tension. Cut the test specimen at the marks and determine its weight to the nearest 0.5 g.

A-5.2.3 Calculate the weight of the braid, per 100 m by the following formula:

Weight in grams per 100 m = 100 x W

3

where

W = weight in grams of 3-m length of braid (see A-5.2.2)

A-5.2.4 Repeat the test with the remaining test specimens.

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INTERNATIONAL SYSTEM OF UNITS (SI UNITS)

Base Units

Quantity Unit Symbol Length metre m Mass kilogram kg Time second s Electric current ampere A Thermodynamic Kelvin K Temperature Luminous intensity candela cd Amount of substance mole mol Supplementary Units Quantity Unit Symbol Plane angle radian red Solid angle steradian sr Derived Units Quantity Unit Symbol Conversion Force Newton N 1 N = 1kg.1m/s2 Energy joule J 1 J = 1N.m Power watt W 1W = 1J/s Flux weber Wb 1Wb= 1V.s Flux density tesla T 1 T = 1Wb/m2 Frequency hertz Hz 1Hz = 1 c/s (s-1) Electric conductance slemens S 1 S = 1 A/V Pressure, stress pascal Pa 1 Pa = 1N/m2 INDIAN STANDARDS INSTITUTION Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 Telephones : 26 60 21, 27 01 31 Telegrams : Manaksanstha Regional Office: Telephone Western : Novelty Chambers, Grant Road BOMBAY 400007 37 97 29 Eastern : 5 Chowringhee Approach CALCUTTA 700072 23 08 02 Southern : C.I.T. Campus, Adyar MADRAS 600020 41 24 42 Branch Offices: ‘Pushpak’, Nurmohamed Shaikh Marg, Khanpur AHMADABAD 380001 2 03 91 ‘F’ Block, Unity Bldg, Narasimharaja Square BANGALORE 560002 2 76 49 Gangotri complex, Bhadhada Road, T.T. Nagar BHOPAL 462003 6 27 16 22E Kalpana Area BHUBANESHWAR 751014 5 36 27 Ahimsa Bldg, SCO 82-83, Sector 17C CHANDIGARH 160017 2 83 20 5-8-56C L.N.Gupta Marg HYDERABAD 500001 22 10 83 D-277 Todarmal Marg, Banipark JAIPUR 302006 6 98 32 117/418B Sarvodaya Nagar KANPUR 208005 8 12 72 Patliputra Industrial Estate PATNA 800013 6 28 08 Antes Bldg (2nd Floor), Rly Station Road TRIVANDRUM 695001 32 27

Reproduced by Reprography Unit, ISI, New Delhi