1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationElectric and optical fibre cables Test methods for non-metallic materialsPart 603: Physical tests Measurement of total acid number of filling compoundsBS EN 60811-603:2012Nationa
2、l forewordThis British Standard is the UK implementation of EN 60811-603:2012. It isidentical to IEC 60811-603:2012. In the UK, the relationship between the supersessions of BS EN 60811 seriescan be summarized as follows.Superseded standards are withdrawnThe UK participation in its preparation was e
3、ntrusted by Technical CommitteeGEL/20, Electric cables, to Subcommittee GEL/20/17, Electric Cables - Lowvoltage.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Use
4、rs are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 65340 7ICS 29.035.01; 29.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the aut
5、hority of the StandardsPolicy and Strategy Committee on 31 July 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60811-603:2012BS EN 60811-100 together with Supersedes - -201, -202, -203, -501 BS EN 60811-1-1:1995 -301, -302, -411, -601, -602, -603, -604 BS EN
6、 60811-5-1:2000 -401, -412 BS EN 60811-1-2:1995 -402, -502, -503, -606 BS EN 60811-1-3:1995 -403, -404, -507 BS EN 60811-2-1:1998 -405, -409 BS EN 60811-3-2:1995 -406, -511, -605, -607 BS EN 60811-4-1:2004 -407, -408, -410, -510, -512, -513 BS EN 60811-4-2:2004 -504, -505, -506 BS EN 60811-1-4:1995
7、-508, -509 BS EN 60811-3-1:1995EUROPEAN STANDARD EN 60811-603 NORME EUROPENNE EUROPISCHE NORM June 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17
8、, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60811-603:2012 E ICS 29.035.01; 29.060.20 Supersedes EN 60811-5-1:1999 (partially) + A1:2004 (partially)English version Electric and optical fibre cables - T
9、est methods for non-metallic materials - Part 603: Physical tests - Measurement of total acid number of filling compounds (IEC 60811-603:2012) Cbles lectriques et fibres optiques - Mthodes dessai pour les matriaux non-mtalliques - Partie 603: Essais physiques - Mesure de lindice dacide total des mat
10、ires de remplissage (CEI 60811-603:2012) Kabel, isolierte Leitungen und Glasfaserkabel - Prfverfahren fr nichtmetallene Werkstoffe - Teil 603: Physikalische Prfungen - Messung der Gesamtsurezahl von Fllmassen (IEC 60811-603:2012) This European Standard was approved by CENELEC on 2012-04-17. CENELEC
11、members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on appli
12、cation to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CEN
13、ELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
14、a, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 60811-603:2012 - 2 - Foreword The text of document 20/1312/FDIS, future edition 1 of IEC 60811-603, prepared by IEC/TC 20 “Electric cables“ was
15、submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60811-603:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-01-17 latest date by which t
16、he national standards conflicting with the document have to be withdrawn (dow) 2015-04-17 This document supersedes Clause 7 of EN 60811-5-1:1999 + A1:2004 (partially). Full details of the replacements are shown in Annex A of EN 60811-100:2012. There are no technical changes with respect to EN 60811-
17、5-1:1999 + A1:2004, but see the Foreword to EN 60811-100:2012. This standard is to be read in conjunction with EN 60811-100. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for iden
18、tifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC) Endorsement notice The text of the International Standard IEC 60811-603:2012 was approved by CENELEC
19、as a European Standard without any modification. BS EN 60811-603:2012- 3 - EN 60811-603:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this documen
20、t and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by
21、(mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60811-100 2012 Electric and optical fibre cables - Test methods for non-metallic materials - Part 100: General EN 60811-100 2012 BS EN 60811-603:2012 2 60811-603 IEC:2012 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative refere
22、nces . 6 3 Terms and definitions . 6 4 Test method . 6 4.1 General . 6 4.2 Apparatus 6 4.3 Reagents . 6 4.3.1 General . 6 4.3.2 Potassium hydroxide solution, standard alcoholic (0,1 N) 7 4.3.3 p-Naphtholbenzein indicator solution . 7 4.3.4 Titration solvent . 7 4.4 Test procedure 7 4.5 Calculation 7
23、 5 Test report 8 Annex A (normative) Specification for p-Naphtholbenzein 9 Bibliography 10 BS EN 60811-603:201260811-603 IEC:2012 5 INTRODUCTION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of all types of cables. These test methods are intended to be
24、 referenced in standards for cable construction and for cable materials. NOTE 1 Non-metallic materials are typically used for insulating, sheathing, bedding, filling or taping within cables. NOTE 2 These test methods are accepted as basic and fundamental and have been developed and used over many ye
25、ars principally for the materials in all energy cables. They have also been widely accepted and used for other cables, in particular optical fibre cables, communication and control cables and cables for ships and offshore applications. BS EN 60811-603:2012 6 60811-603 IEC:2012 ELECTRIC AND OPTICAL F
26、IBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 603: Physical tests Measurement of total acid number of filling compounds 1 Scope This Part 603 of IEC 60811 gives the test methods to examine the filling compound for corrosive elements. 2 Normative references The following documents, in whol
27、e or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60811-100:2012, Electric and optica
28、l fibre cables Test methods for non-metallic materials Part 100: General 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60811-100 apply. 4 Test method 4.1 General This part of IEC 60811 shall be used in conjunction with IEC 60811-100. Unless otherwi
29、se specified, tests shall be carried out at room temperature. This test is used to examine the filling compound for corrosive elements. The total acid number is defined as the quantity of base, expressed in milligrams of potassium hydroxide (KOH), that is required to titrate all acidic constituents
30、present in 1 g of sample. 4.2 Apparatus The apparatus comprises a 50 ml burette graduated in 0,1 ml subdivisions or a 10 ml burette graduated in 0,05 ml subdivisions. 4.3 Reagents 4.3.1 General The reagent shall be of an analytical reagent quality. Distilled water shall be used throughout. BS EN 608
31、11-603:201260811-603 IEC:2012 7 4.3.2 Potassium hydroxide solution, standard alcoholic (0,1 N) Add 6 g of solid KOH to approximately 1 l of anhydrous isopropyl alcohol (containing less than 0,9 % water) in a 2 l Erlenmeyer flask. Boil the mixture gently for 10 min to 15 min, stirring to prevent the
32、solids from forming a cake on the bottom. Add at least 2 g of barium hydroxide (Ba(OH)2) and again boil gently for 5 min to 10 min. Cool to room temperature, allow to stand for several hours, and filter the supernatant liquid through a fine sintered glass or porcelain filtering funnel. Avoid unneces
33、sary exposure to carbon dioxide (CO2) during filtration. Store the solution in a chemically resistant dispensing bottle out of contact with cork, rubber or saponifiable stopcock lubricant and protected by a guard tube containing soda, lime or soda asbestos. Standardize frequently enough to detect ch
34、anges of 0,000 5 N, preferably against pure potassium acid phthalate in about 100 ml of CO2-free water using phenolphthalein to detect the end point. NOTE 1 To simplify calculations, the standard KOH solution may be adjusted so that 1,00 ml is equivalent to 5,00 mg of KOH. NOTE 2 Sodium hydroxide (N
35、aOH) may be substituted for KOH. 4.3.3 p-Naphtholbenzein indicator solution Dissolve 10 g of p-naphtholbenzein per litre of titration solvent as defined in 4.3.4. p-Naphtholbenzein shall conform with Annex A. 4.3.4 Titration solvent Add 500 ml of toluene and 5 ml of water to 495 ml of anhydrous isop
36、ropyl alcohol. 4.4 Test procedure Introduce approximately 25 g of the filling compound, weighed to the nearest 0,1 g, into a 250 ml Erlenmeyer flask. Add 100 ml of the titration solvent and 0,5 ml of the indicator solution and, without stoppering, swirl until the sample is entirely dissolved by the
37、solvent. Titrate immediately at a temperature below 30 C. Add 0,1 N KOH solution in increments and swirl to disperse the KOH as necessary. Shake vigorously near the end point, but avoid dissolving carbon dioxide (CO2) in the solvent. The end point is considered to have occurred when the colour chang
38、e persists for 15 s or if it reverses with two drops of 0,1 N HCl. NOTE In the case of acidic compounds, the orange colour changes to green or green-brown as the end-point is approached. Make a blank titration on 100 ml of the titration solvent and 0,5 ml of the indicator solution and add 0,1 N KOH
39、solution in 0,05 ml or 0,1 ml increments. Record the quantity of 0,1 N KOH solution required to reach the end point (orange to green). 4.5 Calculation The total acid number can be calculated as follows: Total acid number, mg of KOH/g = WB)N(A 56,1 where A is the number of millilitres of KOH solution
40、 required for titration of the sample; B is the number of millilitres of KOH solution required for titration of the blank; N is the normality of the KOH solution; BS EN 60811-603:2012 8 60811-603 IEC:2012 W is the amount of grams of sample used. 5 Test report The test report shall be in accordance w
41、ith that given in IEC 60811-100. BS EN 60811-603:201260811-603 IEC:2012 9 Annex A (normative) Specification for p-Naphtholbenzein A.1 Appearance p-Naphtholbenzein shall be in the form of a red amorphous powder. A.2 Chlorides It shall contain less than 0,5 % chlorides. A.3 Solubility A quantity of 10
42、 g shall dissolve completely in 1 l of titration solvent defined in 4.3.4. A.4 Minimum absorbance After having dissolved exactly 0,1 000 g of the sample in 250 ml of methanol and having converted 5 ml of this solution to 100 ml with the aid of a pH 12 buffer, the final dilution shall have a minimum
43、absorbance of 1,20 when read at 6,50 m peak, using a Beckmann DU or alternative type spectrophotometer, 1 cm cells and water serving as the blank. A.5 pH range The indicator shall turn to the first clear green at a relative pH of 11 0,5 when tested by the method for pH range of the p-Naphtholbenzein
44、 indicator defined in 4.3.3. Not more than 0,5 ml of 0,01 N KOH above that for the blank shall bring the indicator solution to the first clear green. Not more than 1,0 ml of 0,01 N KOH above that for the blank shall turn the indicator solution to a blue colour. The initial pH of the indicator soluti
45、on shall be at least as high as that of the blank. BS EN 60811-603:2012 10 60811-603 IEC:2012 Bibliography IEC 60811-5-1:1990, Common test methods for insulating and sheathing materials of electric cables Part 5: Methods specific to filling compounds Section One Drop-point Separation of oil Lower te
46、mperature brittleness Total acid number Absence of corrosive components Permittivity at 23 C DC resistivity at 23 C and 100 C (withdrawn) _ BS EN 60811-603:2012This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-relate
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