EN 61868:1999

Mineral insulating oils - Determination of kinematic viscosity at very low temperatures

Specifies a procedure for the determination of the kinematic viscosity of mineral insulating oils, both transparent and opaque, at very low temperatures, after a cold soaking period of at least 20 h, by measuring the time for a volume of liquid to flow under gravity throught a calibrated glass capillary viscometer. Applies at all temperatures to both Newtonian and non-Newtonian liquids having viscosities of up to 20 000 mm2/s.

Isolieröle auf Mineralölbasis - Bestimmung der kinematischen Viskosität bei sehr niedrigen Temperaturen

Huiles minérales isolantes - Détermination de la viscosité cinématique à très basse température

Spécifie un mode opératoire pour la détermination de la viscosité cinématique des huiles minérales isolantes, transparentes ou opaques, à très basse température, après une période de repos d'au moins 20 h, en mesurant le temps nécessaire à un volume de liquide pour qu'il s'écoule par gravité à travers un viscosimètre à capillaire en verre étalonné. S'applique à toutes les températures aux liquides newtoniens ou non-newtoniens ayant une viscosité inférieure ou égale à 20 000 mm2/s.

Mineral insulating oils. - Determination of kinematic viscosity at very low temperatures (IEC 61868:1998)

General Information

• Status: Published
• Publication Date: 21-Jan-1999
• Withdrawal Date: 30-Sep-2001
• ICS: 17.220.99 - Other standards related to electricity and magnetism
• 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: 22-Jan-1999
• Completion Date: 22-Jan-1999
• Ref Project: SIST EN 61868:1999 - Mineral insulating oils - Determination of kinematic viscosity at very low temperatures

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61868:1999
01-december-1999
Mineral insulating oils. - Determination of kinematic viscosity at very low
temperatures (IEC 61868:1998)
Mineral insulating oils - Determination of kinematic viscosity at very low temperatures
Isolieröle auf Mineralölbasis - Bestimmung der kinematischen Viskosität bei sehr
niedrigen Temperaturen
Huiles minérales isolantes - Détermination de la viscosité cinématique à très basse
température
Ta slovenski standard je istoveten z: EN 61868:1999
ICS:
29.040.10 Izolacijska olja Insulating oils
SIST EN 61868:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61868:1999

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SIST EN 61868:1999

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SIST EN 61868:1999

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SIST EN 61868:1999
NORME
CEI
INTERNATIONALE
IEC
61868
INTERNATIONAL
Première édition
STANDARD
First edition
1998-11
Huiles minérales isolantes –
Détermination de la viscosité cinématique
à très basse température
Mineral insulating oils –
Determination of kinematic viscosity
at very low temperatures
 IEC 1998 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.
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
PRICE CODE L
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 61868:1999
61868  IEC:1998 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION .7
Clause
1 Scope.9
2 Normative references.9
3 Definitions.9
4 Principle.11
5 Apparatus.11
6 Calibration.13
7 Procedure.15
8 Expression of results. 17
Figure 1 – Viscometer bath and accessoires . 21

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SIST EN 61868:1999
61868  IEC:1998 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
MINERAL INSULATING OILS –
DETERMINATION OF KINEMATIC VISCOSITY
AT VERY LOW TEMPERATURES
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subje
...