SIST HD 381 S1:1998

Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids

Applies to the determination of whether or not ionizable soluble organic and inorganic materials are present by measuring the increase in volume conductivity of a liquid extract.

Prüfverfahren zur Bestimmung von ionisierender Verunreinigungen in elektrisch isolierenden Werkstoffen durch flüssige Auszüge

Méthodes d'essai pour la détermination des impuretés ioniques dans les matériaux isolants électriques par extraction par des liquides

S'applique à la détermination de la présence ou de l'absence des matériaux organiques et inorganiques solubles ionisables par la mesure de l'accroissement de la conductivité volumique d'un extrait liquide.

Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids (IEC 60589:1977)

General Information

• Status: Published
• Publication Date: 30-Sep-1998
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: IZO - Insulating materials
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1998
• Due Date: 01-Oct-1998
• Completion Date: 01-Oct-1998
• Ref Project: HD 381 S1:1979 - Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids

Standards Content (Sample)

SLOVENSKI STANDARD
SIST HD 381 S1:1998
01-oktober-1998
Methods of test for the determination of ionic impurities in electrical insulating
materials by extraction with liquids (IEC 60589:1977)
Methods of test for the determination of ionic impurities in electrical insulating materials
by extraction with liquids
Prüfverfahren zur Bestimmung von ionisierender Verunreinigungen in elektrisch
isolierenden Werkstoffen durch flüssige Auszüge
Méthodes d'essai pour la détermination des impuretés ioniques dans les matériaux
isolants électriques par extraction par des liquides
Ta slovenski standard je istoveten z: HD 381 S1:1979
ICS:
29.035.01 Izolacijski materiali na Insulating materials in
splošno general
SIST HD 381 S1:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST HD 381 S1:1998

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SIST HD 381 S1:1998

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SIST HD 381 S1:1998

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SIST HD 381 S1:1998
NORME CEI
INTERNATIONALE IEC
60589
INTERNATIONAL
Première édition
STAN DARD
First edition
1977-01
Méthodes d'essai pour la détermination des
impuretés ioniques dans les matériaux isolants
électriques par extraction par des liquides
Methods of test for the determination of ionic
impurities in electrical insulating materials
by extraction with liquids
© 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
sous
utilisée 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.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
G
PRICE CODE
International Electrotechnical Commission
IEC Men ayHapoAHaR 3neKTpoTexHwiecKaR HOMHCCHA
Pour prix, voir catalogue en vigueur
• • For price, see current catalogue

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SIST HD 381 S1:1998
Publication 589 de la CEI
IEC Publication 589
(Premiere édition - 1977)
(First edition - 1977)
Méthodes d'essai pour la détermination des impu-
Methods of test for the determination of ionic
retés ioniques dans les matériaux isolants élec-
impurities in electrical insulating materials by
triques par extraction par des liquides
extraction with liquids
CORRIGENDUM 1
Page 12
ANNEXE B — SOLUTIONS NORMALISÉES DE KC1
Quatrième paragraphe, au lieu de:
La conductivité des solutions normalisées à 23 °C est égale à:
solution 0,1 N
Ykci = 1,16 S•m1
solution 0,01 N
0,135 S•m1
Ykci =
solution 0,001 N 0,014
S m1
Ykci =
lire:
La conductivité des solutions normalisées à 23 °C est égale à:
solution 0,1 N
1,24
Ykci =
S•m-1
solution 0,01 N 0,136 S•m1
YxCl =
solution 0,001 N
Ykci = 0,0141 S•m1
Page 13
APPENDIX B — KC1 STANDARD SOLUTIONS
Fourth paragraph, instead of:
The conductivity of the standard solution at 23 °C is for:
S•m-1
0.1 N Ykci = 1.1'6
0.01 N 0.135
S•mi
Ykci =
0.001 N 0.014
Ykci =
read:
The conductivity of the standard solution at 23
•C is for:

0.1 N 1.24
=
YIiCi

0.01 N
= 0.136 S•ln i
YiiCi

0.001 N
0.0141 S•m1
Ykci =
Juin i978 June i978

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SIST HD 381 S1:1998

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SIST HD 381 S1:1998
— 3 —
INTERNATIONAL ELECTROTECHNICAL COMMISSION
METHODS OF TEST
FOR THE DETERMINATION OF IONIC IMPURITIES
IN ELECTRICAL INSULATING MATERIALS BY EXTRACTION
WITH LIQUIDS
FOREWORD
1) The formal decisions or agreements of the I EC 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 EC recommendation for their national rules in so far as national conditions will permit. Any divergence
between the I EC 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 15A, Short-time Tests, of I E C Technical Coin-
mittee No. 15, Insulating Materials.
A first draft was discussed at the meeting held in Bucharest in 1974. As a result of this meeting, a draft,
Document 15A(Central Office)31, was submitted to the National Committees for app royal under the
Six Months' Rule in August 1976.
The following countries voted explicitly in favour of publication:
Austria Japan
Belgium Norway
Canada Portugal
Czechoslovakia Turkey
Denmark Union of Soviet
Egypt
Socialist Republics
France
United Kingdom
Germany
United States of America

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SIST HD 381 S1:1998
5—
METHODS OF TEST FOR THE DETERMINATION OF IONIC IMPURITIES
IN ELECTRICAL INSULATING MATERIALS BY EXTRACTION
WITH LIQUIDS
1. Scope and object
The purpose of this standard is to determine whether or not ionizable soluble organic and/or
inorganic materials are present in electrical insulating materials. Their presence is confirmed by
the increase in volume conductivity of the liquid extract and the test is considered to have particular
significance when applied to electrical insulating materials which are to be immersed in coolants
or impregnants.
2. Definitions and units
The volume conductivity of a liquid extract
is the difference between the volume conductivity
yex
of the extract solution and the volume conductivity of the control sample (blank sample). The
SI
1
unit of the volume conductivity is S  m- 1. In practice, the unit S cm-
is often used.
3.
Apparatus
—
250 ml conical flasks (Erlenmeyer) with reflux condensers having acid resistant and alkali resis-
tant glass;
— conductivity cell with known cell constant (m-1
k ) or (cm-1);
—
a bridge or other measuring device capable of measuring resistances with an accuracy of 5%.
In the case of aqueous extracts, this measuring device shall permit the measurement of resistances
up to 1 MS2 at frequencies between 50 Hz and 3 000 Hz.
In the case of organic extracts, the measuring device shall permit the measurement of resistances
up to 1 TS2 using not more than 100 V. d.c.
Note. —
If unknown, the cell constant k is determined by means of a standard KC1 solution of known conductivity,
in accordance with Appendix B.
4. Procedure
4.1 Aqueous extract
4.1.1 Test water
The quality of the test water has a considerable influence on the result of the test. The volume
conductivity of the test water preparing the aqueous extracts shall be (2 . 10-4 S  m- 1. The pH
value of the test water shall be between 6.8 and 7.2.

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SIST HD 381 S1:1998
— 7 —
The test water can be made by means of an ion-exchanger or by using double distilled water
of the recommended pH value.
Note. — Attention is drawn to the effect of carbon dioxide. The pH of newly prepared water will change to between
5.7 and 5.9 after the water has been exposed to air for a short time. If the change due to carbon dioxide
has produced a pH of not less than 6.4, the water can be restored to pH = 7 by blowing pure nitrogen
thr
...