EN 61100:1992

SLOVENSKI STANDARD
01-oktober-1997
Classification of insulating liquids according to fire point and net calorific value
(IEC 110:1992)
Classification of insulating liquids according to fire point and net calorific value
Einteilung von Isolierflüssigkeiten nach dem Brennpunkt und dem spezifischen Heizwert
Classification des isolants liquides selon le point de feu et le pouvoir calorifique inférieur
Ta slovenski standard je istoveten z: EN 61100:1992
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
1992-05
Classification des isolants liquides selon
le point de feu et le pouvoir calorifique inférieur
Classification of insulating liquids according
to fire-point and net calorific value
© IEC 1992 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
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procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
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1100 0O I EC – 3 –
CONTENTS
Page
FOREWORD
INTRODUCTION 7
Clause
1 Scope 9
2 9 Normative references
Characteristics selected for the classification 9
11 Fire-point
3.1
3.2 Net calorific value
4 Classification
4.1 Classification according to fire-point
4.2 Classification according to net calorific value
4.3 Examples of designation
1100©IEC — 5 —
INTERNATIONAL ELECTROTECHNICAL COMMISSION
CLASSIFICATION OF INSULATING LIQUIDS
ACCORDING TO FIRE-POINT
AND NET CALORIFIC VALUE
FOREWORD
The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
1)
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 IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This International Standard has been prepared by IEC Technical Committee No. 10: Fluids
for electrotechnical applications.
The text of this standard is based on the following documents:
Report on Voting
DIS
10(CO)261 10(CO)266
Full information on the voting for the approval of this standard can be found in the Voting
rt indicated in the above table.
Repo
1100©IEC — 7 —
INTRODUCTION
IEC Publication 76-2: 1976, Power transformers — Part 2: Temperature rise, includes a
classification system for identifying transformers based on type of cooling medium and the
method of coolant circulation. Insulating liquids were classified therein according to their
fire behaviour into classes O (mineral oil or equivalent combustible synthetic insulating
liquids), and L (non-flammable synthetic insulating liquids). In 1984, IEC/TC 10 undertook
a classification of insulating liquids according to fire behaviour. Pending IEC/TC 10
proposals, CENELEC/TC 14 drafted such a classification based on fire-point adding to the
former classes O and L a new class K for liquids with fire-point above 300 °C.
While the
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