HD 382 S1:1979

Determination of the aromatic hydrocarbon content of new mineral insulating oils

Applies to quality control and acceptance testing of oils. Two methods of analysis are given: infra-red spectrophotometry and adsorption chromatography.

Bestimmung des Gehlts an aromatischen Kohlenwasserstoffen von neuen Isolierölen

Détermination de la teneur en hydrocarbures aromatiques des huiles isolantes minérales neuves

S'applique au contrôle de qualité et de réception des huiles. Donne deux méthodes d'analyse: par spectrophotométrie infrarouge, par chromatographie d'absorption.

Determination of the aromatic hydrocarbon content of new mineral insulating oils (IEC 60590:1977)

General Information

• Status: Published
• Publication Date: 23-Apr-1979
• Withdrawal Date: 23-Oct-1979
• ICS: 29.040.10 - Insulating oils
• Technical Committee: CLC/SR 10 - Fluids for electrotechnical applications
• Drafting Committee: IEC/TC 10 - IEC_TC_10
• Parallel Committee: IEC/TC 10 - IEC_TC_10
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Apr-1979
• Completion Date: 24-Apr-1979
• Ref Project: SIST HD 382 S1:1999 - Determination of the aromatic hydrocarbon content of new mineral insulating oils

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-1999
Determination of the aromatic hydrocarbon content of new mineral insulating oils
(IEC 60590:1977)
Determination of the aromatic hydrocarbon content of new mineral insulating oils
Bestimmung des Gehlts an aromatischen Kohlenwasserstoffen von neuen Isolierölen
Détermination de la teneur en hydrocarbures aromatiques des huiles isolantes minérales
neuves
Ta slovenski standard je istoveten z: HD 382 S1:1979
ICS:
29.040.10 Izolacijska olja Insulating oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
INTERNATIONAL
Première édition
STAN DARD
First edition
1977-01
Détermination de la teneur en hydrocarbures
aromatiques des huiles isolantes minérales neuves
Determination of the aromatic hydrocarbon content
of new mineral insulating oils
© IEC 1977 Droits de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
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Pour prix, voir catalogue en vigueur
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cation 590 I E C Publi
Publication 590 de la C E I
First edition — 1977
Premiere edition — 1977
hydrocarbures Determination of the aromatic hydrocarbon
Détermination de la teneur en
content of new mineral insulating oils
aromatiques des huiles isolantes minérales neuves
CORRIGENDUM 1
Page II
Page 10
2.2.4 Procedure
2.2.4 Mode opératoire
Item in) , page 13:
Point in), page 12:
instead of:
au lieu de:
(1 torr = 1.3 103 Pa)
(1 ton = 1,3 10 8 Pa)
read:
lire:
(1 torr = 1.3 10 2 Pa)
(1 torr = 1,3 10 2 Pa)
July 1978
Juillet 1978
— 3 —
CONTENTS
Page
FOREWORD 5
PREFACE 5
Clause
1. Scope 7
2. Test methods 7
7 - 2.1 Infrared spectrophotometric analysis
2.1.1 Principle of the method 7
2.1.2 Apparatus 7
2.1.3 Procedure 9
Calculation of the result 2.1.4
2.1.5 Precision 9
Adsorption chromatography analysis 2.2
Principle of the method 9
2.2.1
2.2.2 Apparatus
2.2.3 Reagents
2.2.4 Procedure
13 2.2.5 Calculation of the result
2.2.6 Precision
FIGURES
INTERNATIONAL ELECTROTECHNICAL COMMISSION
DETERMINATION OF THE AROMATIC HYDROCARBON CONTENT
OF NEW MINERAL INSULATING OILS
FOREWORD
1) The formal decisions or agreements of the I E C on technical matters, prepared by Technical Committees on which all the
National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3) In order to promote international unification, the I E C expresses the wish that all National Committees should adopt
the text of the I E C recommendation for their national rules in so far as national conditions will permit. Any divergence
between the I E C recommendation and the corresponding national rules should, as far as possible, be clearly indicated
in the latter.
PREFACE
This standard has been prepared by Sub-Committee 10A: Hydrocarbon Insulating Oils, of I E C Technical Committee
No. 10, Liquid and Gaseous Dielectrics.
A first draft was discussed during the meeting held in Baden-Baden in 1975.
As a result of this meeting, a new draft, Document 10A(Central Office)30, was submitted to the National Committees for
approval under the Six Months' Rule in May 1976.
The following countries voted explicitly in favour of publication:
Austria Netherlands
Belgium Poland
Canada Romania
Czechoslovakia South Africa (Republic of)
Denmark Spain
Egypt Sweden
Finland Switzerland
France Turkey
Germany Union of Soviet
Hungary Socialist Republics
Korea (Democratic People's United States of America
Republic of)
An addendum, Document 10A(Central Office)30A, relating to Figure 1, was submitted to the National Committees for
approval under the Six Months' Rule in August 1976.
The following countries voted explicitly in favour of publication:
Austria South Africa (Republic of)
Belgium Spain
Canada Sweden
Denmark Switzerland
Egypt Turkey
Germany United States of America
Netherlands
— 7 —
DETERMINATION OF THE AROMATIC HYDROCARBON CONTENT
OF NEW MINERAL INSULATING OILS
Scope
1.
This standard deals with the determination of the aromatic hydrocarbon content of new mineral
insulating oils.
Two methods are proposed:
Infrared spectrophotometric analysis
—
This method is recommended as a quality control and acceptance test for mineral insulating
oils. It uses the relationship between the absorbance at 1 610 cm- 1 and the n-d-M analysis *
ng structures. The
to determine the proportion of the total carbon atoms present in aromatic ri
conversion factor derived from this relationship is applicable to oils with a molecular mass in
the range 290 to 500 and with an aromatic carbon content in the range 1.2 % to 60%.
— Adsorption chromatographic analysis
This method describes the measurement of the percentage by mass of polar compounds and
compounds containing at least one aromatic ring per molecule present in low molecular mass
mineral insulating oils.
2. Test methods
Infrared spectrophotometric analysis
2.1
2.1.1 Principle of the method
The infrared absorption spectrum of the sample to be analyzed is recorded and the absorption
characteristic of the aromatic ring at 1 610 cm- 1 is measured. This absorption is a function of the
amount of aromatic carbon.
2.1.2 Apparatus
Infrared spectrophotometer
in the region of 1 600 cm-1.
Double beam spectrophotometer having a resolution better than 3 cm- 1
Cell
Any infrared liquid cell with variable or fixed path length with NaC1 windows. The path length
will be comprised between 0.05 mm and 0.30 mm and shall be known within ±0.003 mm, or better.
The most suitable length will be dictated by the content of aromatic hydrocarbons which is to
be determined.
The path length can be determined by any procedure described in any handbook on infrared
spectrophotometry.
pp. 700-702, October 1958.
* G. Brandes: Erdôl und Kohle, 11,

— 9 —
2.1.3 Procedure
a) Adjust the spectrophotometer in accordance with the instructions given in the manufacturer's
handbook.
b) Fill the cell with the oil to be examined.
c) Set the cell at the correct place in the spectrophotometer.
d) Record the complete infrared spectrum.
using, as a baseline, the tangent to the spectrum
e) Measure the transmitted intensity at 1 610 cm- 1
curve at the minima of this absorption band (see Figure 1, page 16).
2.1.4 Calculation of the result
Cal
...