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1、BRITISH STANDARD BS EN 60836:2005 Specifications for unused silicone insulating liquids for electrotechnical purposes The European Standard EN 60836:2005 has the status of a British Standard ICS 29.040.10 ? BS EN 60836:2005 This British Standard was published under the authority of the Standards Pol
2、icy and Strategy Committee on 17 October 2005 BSI 17 October 2005 ISBN 0 580 46507 1 National foreword This British Standard is the official English language version of EN 60836:2005. It is identical with IEC 60836:2005. It supersedes BS 7704:1993 which is withdrawn. The UK participation in its prep
3、aration was entrusted to Technical Committee GEL/10, Fluids for electrotechnical applications, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or E
4、uropean publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to includ
5、e all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiri
6、es on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back co
7、ver and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD EN 60836 NORME EUROPENNE EUROPISCHE NORM July 2005 CENELEC European Committee for Electrotechnical Standa
8、rdization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60836:2005
9、E ICS 29.040.10 Supersedes HD 565 S1:1993 English version Specifications for unused silicone insulating liquids for electrotechnical purposes (IEC 60836:2005) Spcifications pour liquides isolants silicones neufs pour usages lectrotechniques (CEI 60836:2005) Anforderungen an ungebrauchte Silikonisoli
10、erflssigkeiten fr elektrotechnische Zwecke (IEC 60836:2005) This European Standard was approved by CENELEC on 2005-06-01. CENELEC 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 w
11、ithout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other lan
12、guage made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estoni
13、a, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 10/619/FDIS, future edition 2 of IEC 60836, prepared by
14、 IEC TC 10, Fluids for electrotechnical applications, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60836 on 2005-06-01. This European Standard supersedes HD 565 S1:1993. It includes the following major technical changes: a) the title has been modified; b) the scop
15、e has been adapted to meet the changes in the title; c) health, safety and environmental requirements have been revised in order to follow the environmental practice carried out for other insulating liquids. Isopropyl alcohol now replaces chlorinated dissolvents for cleaning test equipment; d) Claus
16、e 8 replaces Section 2 of HD 565 S1. In line with other TC 10 documents, EN ISO 2592 (ISO 2592, not modified) is now the only method specified for measuring fire point and EN 60814 (IEC 60814, not modified) for water content. Breakdown voltage measurement has now been transferred to EN 60156 (IEC 60
17、156, not modified); e) Table 1 replaces Sheet 1 of HD 565 S1. Two technical changes have been made: the minimum fire point is increased from 330 C to 340 C (in conformity with ASTM D4652) and recognizes also that the test values registered for production are even higher. neutralization values have b
18、een reduced from 0,02 mg KOH/g to 0,01 mg KOH/g, in line with production test data. f) Annex A has been deleted. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-03-01 lat
19、est date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-06-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60836:2005 was approved by CENELEC as a European Standard without any modification. In the offici
20、al version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61039 NOTE Harmonized as HD 618 S1:1992 (not modified). IEC 61100 NOTE Harmonized as EN 61100:1992 (not modified). _ 2 EN 60836:2005 3 CONTENTS 1 Scope.4 2 Normative references .4 3 Terms and definiti
21、ons .5 4 Properties.5 4.1 General properties 5 4.2 Properties relating to health, safety and environment (HSE)5 5 General delivery requirements and identification. .6 6 Storage and maintenance.6 7 Sampling 6 8 Properties and test methods.6 8.1 Colour and appearance .6 8.2 Density6 8.3 Kinematic visc
22、osity7 8.4 Flash point 7 8.5 Fire point.7 8.6 Refractive index 7 8.7 Pour-point .7 8.8 Water content7 8.9 Neutralization value.7 8.10 Breakdown voltage8 8.11 Dielectric dissipation factor, permittivity, d.c. resistivity .8 8.12 Gassing under electrical stress and ionization.8 8.13 Flammability8 9 In
23、dividual specifications8 9.1 Silicone transformer liquid Type T1 .8 Annex ZA (normative) Normative references to international publications with their EN 60836:2005 11corresponding European publications 4 SPECIFICATIONS FOR UNUSED SILICONE INSULATING LIQUIDS FOR ELECTROTECHNICAL PURPOSES 1 Scope Thi
24、s International Standard covers specifications and test methods for unused silicone liquid intended for use in transformers and other electrotechnical equipment. The specified characteristics of silicone transformer liquid Type 1 are described in Table 1. Other specifications will be added when requ
25、ired. NOTE Maintenance of used silicone liquid in electrotechnical equipment is covered in a separate publication IEC 60944. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For und
26、ated references, the latest edition of the referenced document (including any amendments) applies. IEC 60156, Insulating liquids Determination of the breakdown voltage at power frequency Test method IEC 60247, Insulating liquids Measurement of relative permittivity, dielectric dissipation factor (ta
27、n ) and d.c. resistivity IEC 60475, Method of sampling liquid dielectrics IEC 60628, Gassing of insulating liquids under electrical stress and ionization IEC 60814, Insulating liquids Oil-impregnated paper and pressboard Determination of water by automatic coulometric Karl Fischer titration IEC 6094
28、4, Guide for the maintenance of silicone transformer liquids ISO 2211, Liquid chemical products Measurement of colour in Hazen units (platinum-cobalt scale) ISO 2592, Determination of flash and fire points Cleveland open cup method ISO 2719, Determination of of flash point Pensky Martens closed cup
29、method ISO 3016, Petroleum products Determination of pour point (available in English only) !SO 3104, Petroleum products Transparent and opaque liquids Determination of kinematic viscosity and calculation of dynamic viscosity ISO 3675, Crude petroleum and liquid petroleum products Laboratory determi
30、nation of density Hydrometer method ISO 5661, Petroleum products Hydrocarbon liquids Determination of refractive index EN 60836:2005 5 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 silicone insulating liquids liquid organopolysiloxanes whos
31、e molecular structure consists mainly of linear chains of alternating silicon and oxygen atoms, with hydrocarbon groups attached to the silicon atoms 3.2 silicone transformer liquid Type T1 polydimethyl siloxane, without additives, primarily for use in transformers NOTE 1 When tested in accordance w
32、ith the methods specified in Clause 8, silicone Type T1 transformer liquid should comply with the requirements given in Table 1 of this standard. NOTE 2 According to IEC 61039, silicone Type T1 is classified as L-60836-1 and according to IEC 61100 as Class K3. 4 Properties 4.1 General properties Sil
33、icone liquid for transformers (Type T1) has high flash and fire points and is therefore difficult to ignite. If combustion occurs, heat release rate is much lower than that of hydrocarbon oils. In addition to use at similar working temperatures to those of transformers containing mineral transformer
34、 oil, silicone insulating liquid (Type T1) may also be used in appropriately designed electrotechnical equipment operating at higher temperatures. The solubility of water in silicone liquids is greater than in mineral oils. Other physical characteristics which are important for the design of electro
35、technical equipment, e.g heat transfer, may also be different from those of mineral transformer oil and will need to be taken fully into account by the designer. 4.2 Properties relating to health, safety and environment (HSE) 4.2.1 Handling Silicone liquids degrade in nature to simple, naturally occ
36、urring substances. Their handling is not hazardous to health. Direct contact with the eyes may cause slight irritation. Safety glasses should be worn to avoid splashing the eyes. In the case of eye contact, irrigation with large quantities of clean running water should relieve any irritation. If irr
37、itation persists, seek medical advice. Detailed information on safe handling of these liquids can be obtained from manufacturers or suppliers. EN 60836:2005 6 4.2.2 Disposal Local regulations shall be complied with. The preferred means of disposal is recycling by a qualified contractor. Waste liquid
38、 may be incinerated. Spillages should be cleaned using adsorbent media. Small quantities of liquid entering the environment present no special hazard. 5 General delivery requirements and identification Transport of silicone insulating liquid shall be in clean hermetically sealed containers whose lin
39、ing does not interact with the contents. Each container shall display the following information: number of this standard; suppliers designation; batch number; any notices required by local regulatory authorities. NOTE Electrotechnical equipment filled with silicone insulating liquid should be labell
40、ed in accordance with the requirements of the electrotechnical equipment standard in respect of the insulating liquid. 6 Storage and maintenance Storage should preferably be indoors and must be in sealed containers to prevent ingress of moisture and dirt. If accidentally contaminated by water and/or
41、 solid particles during storage, the liquid can usually be restored to acceptable quality by the procedures described in IEC 60944. 7 Sampling The liquid shall be sampled in accordance with IEC 60475, using the procedure consistent with the density of the liquid being sampled. Isopropyl alcohol is s
42、uitable for cleaning the sampling equipment. 8 Properties and test methods 8.1 Colour and appearance 8.1.1 Colour This property shall be measured according to ISO 2211. 8.1.2 Appearance This property shall be evaluated by examining a representative sample of approximately 100 mm in thickness, in tra
43、nsmitted light and at ambient temperature. 8.2 Density This property shall be measured at 20 C according to ISO 3675. EN 60836:2005 7 8.3 Kinematic viscosity This property shall be measured at 40 C according to ISO 3104. 8.4 Flash point This property shall be measured according to ISO 2719. 8.5 Fire
44、 point This property shall be measured according to ISO 2592. 8.6 Refractive index This property shall be measured according to ISO 5661. 8.7 Pour-point This property shall be measured according to ISO 3016. 8.8 Water content This property shall be measured according to IEC 60814. 8.9 Neutralization
45、 value This property shall be measured using the following chemical reagents and procedure. 8.9.1 Reagents a) Standard alcoholic potassium hydroxide (KOH) solution 0,1 mol/dm3. b) Toluene, sulfur-free. c) Azeotropic ethanol (boiling-point 78,2 C). d) Standard hydrochloric acid solution (HCI) 0,1 mol
46、/dm3. e) Alkali blue indicator solution: 2 g of alkali blue 6 B are dissolved in 100 cm3 of azeotropic ethanol containing 1 cm3 hydrochloric acid 0,1 mol/dm3. After 24 h, carry out an acid value test to check whether the indicator has been sufficiently sensitized. The indicator is satisfactory if th
47、e colour changes distinctly from blue to a red comparable to that of a 10 % solution of cobalt nitrate Co(NO3)2 6H2O. Should sensitization be insufficient, repeat the addition of 0,1 mol/dm3 hydrochloric acid and check again after 24 h. Continue until sensitization is satisfactory. Filter and store
48、in a brown glass bottle in the dark. 8.9.2 Procedure Weigh 20 g of the sample to the nearest 0,05 g into a 250 cm3 stoppered conical flask. To a mixture of 60 cm3 of toluene and 40 cm3 of ethanol in a second flask add 2 cm3 of indicator solution. Neutralize the solution with 0,1 mol/dm3 KOH solution
49、 until a red colour comparable to that of a solution of 10 % cobalt nitrate Co(NO3)2 6H2O is obtained and persists for at least 15 s. Add this solution to the sample, swirl and immediately titrate at a temperature not above 25 C with 0,1 mol/dm3 KOH solution to the above end-point. EN 60836:2005 8 The neutralization value is calculated from the expression: neutralization value =