AS 1767.2.1—1999 IEC 60156:1995
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Australian Australian Standard™ Insulating liquids Part 2: Test metho methods ds Method Method 2.1: 2.1: Determina Determination tion of the breakdown voltage at power frequency [ IEC title: Insulating Insulating liquids— Determination Determination of the breakdown breakdown voltage at power frequency frequency— — Test method]
This Australian Standard was prepared by Committee EL/8, Power Transformers. It was approved on behalf of the Council of Standards Australia on 16 February 1999 and published on 5 May 1999.
The following interests are represented on Committee EL/8: Australasian Railway Association Australian Chamber of Commerce and Industry Australian Electrical and Electronic Manufacturers Association Australian Institute of Petroleum . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Electricity Supply Association of Australia Electricity Supply Engineers Association of New South Wales Institution of Engineers Australia Testing Testing interests
Revi ew of Austr alia n Stand ards. 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 editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto. Full details of all Australian Standards Standards and related related publications publications will be found in the Standards Standards Australia Australia Catalogue Catalogue of Publication Publications; s; this information information is supplemented supplemented each month by the magazine ‘The Australian Australian Standard Standard’, ’, which subscribing subscribing members receive, and which gives details of new publication publications, s, new editions and amendments, and of withdrawn Standards. Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without without delay in order order that the matter may be investigated investigated and appropriate appropriate action taken.
This Standard was issued in draft form for comment as DR 97496.
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AS 1767.2.1—1999
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
Australian Australian Standard™ Insulating liquids Part Part 2: Test Test metho methods ds Method Method 2.1: 2.1: Determinat Determination ion of of the breakdown voltage at power frequency
Originated as AS 1767.2.1—1999.
Published Published by Standards Australia (Standards (Standards Association Association of Australia) Australia) 1 The Crescent, Homebush, NSW 2140 ISBN 0 7337 2614 3
ii
PREFACE This Standard was prepared by the Standards Australia Committee EL/8, Power Transformers. Insulating ting liquids liquids— — It is iden identi tica call with with and and has has been been repr reprod oduc uced ed from from IEC IEC 6015 60156: 6:1 1995, 995, Insula Determ Det ermina inatio tion n of the breakd bre akdown own voltag vol tagee at power pow er freque fre quency ncy — Test Tes t method met hod .
In Janu January ary 1997 1997,, IEC IEC comm commenc enced ed numb number erin ing g its its Stand Standard ardss from from 6000 60000 0 by adding adding 6000 60000 0 to the the number of each existing Standard. This coordinates IEC numbering with ISO numbering. During the transition period an IEC Standard might be identified by its new number or its old number (e.g. IEC 60050 or IEC 50). This Standard is Part 2.1 of a series which comprises the following: . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
AS 1767 1767 1767.1 1767.1 1767 1767.2 .2 1767.2.1 1767.2.1 1767.2 1767.2.3 .3 1767.2.4 1767.2.4 1767.2 1767.2.5 .5 1767 1767.2 .2.7 .7
Insu Insula lati tin ng liqu liquid idss Part Part 1: Specifi Specificati cation on for for unuse unused d mineral mineral insulat insulating ing oils oils for for trans transfor formers mers and switc switchgea hgearr Part Part 2: Test Test meth metho ods Method 2.1: 2.1: Determination Determination of the breakdown breakdown voltage voltage at at power frequen frequency cy (this Standard) Standard) Method Method 2.3: 2.3: Method Method of samp sampling ling liqui liquid d dielect dielectric ricss Method 2.4: 2.4: Detection Detection and determinat determination ion of specified specified anti-oxidant anti-oxidant additives additives in insulating insulating oils Method Method 2.5 2.5 Unused Unused hydrocarb hydrocarbonon-bas based ed insulating insulating liquids— liquids— Test Test methods methods for evaluat evaluating ing the oxidation stability Metho Method d 2.7: 2.7: Determ Determin inati ation on of PCB PCB cont contami amina natio tion n in insu insulat lating ing liqui liquids ds by capill capillary ary column gas chromatography—Identification of congeners
As this Standard is reproduced from an International Standard, the following applies: (a)
Its Its number number does does not appear appear on each each page of text text and its identi identity ty is shown shown only only on the cover cover and title pages.
(b)
In the source source text, text, ‘this ‘this Internationa Internationall Standard’ Standard’ should should read read ‘this Australian Australian Standard’. Standard’.
(c)
A full point point should should be subst substitut ituted ed for a comma comma when refer referrin ring g to a decimal decimal marker. marker.
References to International Standards should be replaced by references to Australian Standards, as follows: Refere Ref erence nce to Intern Int ernati ationa onall Standa Sta ndard rd
Austra Aus tralia lian n Standa Sta ndard rd
IEC 60052 60052
AS 2886 2886
Recomm Recommend endatio ations ns for voltage voltage measurement by means of sphere-gaps (one sphere earthed)
Volta Voltage ge measu measure reme ment— nt— Spher Spheree-ga gap p method (one sphere earthed)
60060
H i g h- v o l t a g e t e s t t e c h n i q u e s
1931
H i g h - v o l t a g e t e st t e c h ni q u e s
6047 60475 5
Meth Method od of samp sampli ling ng liqu liquid id diel dielec ectr tric icss
1767 1767 Insu Insula lati ting ng liqu liquid idss 1767 1767.2 .2 Part Part 2: Test Test metho methods ds 1767.2 1767.2.4 .4 Method Method 2.4: 2.4: Detectio Detection n and determination determination of specified specified anti-oxidant anti-oxidant additives in insulating oils
iii ii i
CONTENTS Page
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
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Sco pe pe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Norm No rmat ativ ive e ref refer eren ence ces s . . . . .. . . . .. . . . .. . . . .. . . . .. . . . . .. . . . .. . . . .. . .
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Elec Electr tric ical al appa appara ratu tus s . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .
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3.1 3.1 Volt Voltag age e regu regula lato torr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
3.2 3.2 Step Step-u -up p tran transf sfor orme merr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
3.3 3.3 Cu Curr rren entt-li limi miti ting ng res resis isto tors rs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
3.4 3.4 Sw Swit itch chin ing g syst system em . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
3.5 3.5 Me Meas asur urin ing g dev devic ice e ...........................................
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Test Test asse assemb mbly ly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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4.1 4.1 Test Test cell cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4.2 4.2 Elec Electr trod odes es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4.3 4.3 Stir Stirri ring ng (op (opti tion onal al)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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5
Prep Prepar arat atio ion n of of ele elect ctro rode des s .........................................
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6
Test Test asse assemb mbly ly prep prepar arat atio ion n . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..
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7
Sam pl plin g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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7.1 7.1 Samp Sample le con conta tain iner ers s ...........................................
5
7.2 7.2 Samp Sampli ling ng tec techn hniq ique ue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
8
Cond Co ndit itio ion n of of the the samp sample le . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
9
Test Test proc proced edur ure e .................................................
5
9.1 9.1 Samp Sample le pre prepa para rati tion on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
9.2 9.2 Fill Fillin ing g of of the the cell cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
9.3 9.3 Appl Applic icat atio ion n of vol volta tage ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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10 Re Repo port rt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
11 Test Test dat data a disp disper ersi sion on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Figu Figure res s
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4
. . . . .. . . . .. . . . .. . . . .. . . . . .. . . . .. . . . . .. . . . .. . . . .. . . . . .. . . .
iv
NOTES
. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
1 AUSTRALIAN STANDARD
Insulating Insulating liquids
Part 2: Test methods methods Method Method 2.1: Determinati Determination on of the breakdown breakdown voltage voltage at power frequency
TEST METHOD . m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
1
Sc op op e
This internat internationa ionall Standar Standard d specifi specifies es the method method for determin determining ing the dielectr dielectric ic breakdow breakdown n volta voltage ge of insul insulati ating ng liqui liquids ds at pow power er frequ frequenc ency. y. The test test porti portion, on, contai contained ned in a specif specifie ied d apparatus, is subjected to an increasing a.c. electrical field by means of a constant rate of voltage rise until breakdown occurs. The method applies to all types of insulating liquids of nominal viscosity up to 350 mm 2s−1 at 40 C. It is app approp ropria riate te bot both h for accepta acceptance nce testing testing on unu unuse sed d liquid liquids s at the the time time of the their ir delivery and for establishing the condition of samples taken in monitoring and maintenance of equipment. °
2
Normativ Normative e referenc references es
The followin following g normativ normative e document documents s contain contain provisi provisions ons which, which, through through referenc reference e in this text, constitu constitute te provisi provisions ons of this Internation International al Standard Standard.. At the time of publicat publication, ion, the edition editions s indi indica cate ted d we were re vali valid. d. All All norm normat ativ ive e docu docume ment nts s are are subj subjec ectt to revi revisi sion on,, and and part partie ies s to agreements based on this International Standard are encouraged to investigate the possibility of applyin applying g the most recent editions editions of the normativ normative e document documents s indicate indicated d below. below. Members Members of IEC and ISO maintain registers of currently valid International Standards. IEC IEC 52: 196 1960, 0, Recomm Recommend endati ations ons for voltag voltage e mea measur sureme ement nt by mea means ns of sph sphere ere-ga -gaps ps (one (one sphere earthed) IEC 60, High-voltage test techniques IEC 475: 1974, Method of sampling liquid dielectrics 3
Electric Electrical al apparat apparatus us
The electrical apparatus consists of the following units: a)
Volta Voltage ge regul regulato atorr
b)
StepStep-up up transf transform ormer er
c)
Swit Sw itchi ching ng system system
d)
Energ Energy y limit limiting ing devic devices es
Two or more of these units may be integrated in any equipment system. 3.1
Voltage regulator
Uniform Unif orm increa increase se of volta voltage ge with with time time by manual manual means means is diffi difficul cultt and and,, for this this reaso reason, n, automatic control is essential.
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. m o c . l a b o l g i a s . e r o t s o f n i / / : p t t h t a n o i s r e v l l u f e h t s s e c c A . e l p m a s e g a p 7 e e r f a s i s i h T
AS 1767.2.1-1999, Insulating liquids Test Methods - Determination of the breakdown voltage at power frequency
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