IEC 62701:2014

IEC 62701 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fluids for electrotechnical applications – Recycled mineral insulating oils for
transformers and switchgear
Fluides pour applications électrotechniques – Huiles minérales isolantes
recyclées pour transformateurs et appareillages de connexion

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IEC 62701 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fluids for electrotechnical applications – Recycled mineral insulating oils for

transformers and switchgear
Fluides pour applications électrotechniques – Huiles minérales isolantes

recyclées pour transformateurs et appareillages de connexion

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX N
ICS 29.040 ISBN 978-2-8322-1121-2

– 2 – IEC 62701:2014  IEC 2014

CONTENTS
FOREWORD . 3

INTRODUCTION . 5

1 Scope . 6

2 Normative references . 6

3 Terms and definitions . 8

4 Properties of oil – Refining and stability . 9

5 Classification, identification, general delivery requirements . 9
5.1 Classification . 9
5.2 Requirements . 9
5.3 Miscibility . 9
5.4 Identification and general delivery requirements . 9
6 Properties, their significance and test methods . 9
6.1 Water content . 9
6.2 Acidity . 10
6.3 Antioxidant additives . 10
6.4 Gassing tendency . 10
6.5 Polycyclic aromatics content (PCAs) . 10
6.6 Polychlorinated biphenyl content (PCBs) . 10
6.7 2-Furfural (2-FAL) and related compounds content . 11
6.8 Particle content . 11
6.9 DBDS content. 11
6.10 Stray gassing of oil . 11
Bibliography . 14

Table 1 – General specifications . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
FLUIDS FOR ELECTROTECHNICAL APPLICATIONS –

RECYCLED MINERAL INSULATING OILS

FOR TRANSFORMERS AND SWITCHGEAR

FOREWORD
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International Standard IEC 62701 has been prepared by IEC technical committee 10: Fluids

for electro technical applications.
This International Standard is in line with IEC 60296 and IEC 60422.
The text of this standard is based on the following documents:
FDIS Report on voting
10/908/FDIS 10/910/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62701:2014  IEC 2014

The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data

related to the specific publication. At this date, the publication will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or

• amended.
INTRODUCTION
Health and safety
This International Standard does not purport to address all the safety problems associated

with its use. It is the responsibility of the user of the standard to establish appropriate health

and safety practices and determine the applicability of regulatory limitations prior to use.

The mineral insulating oils which ar
...