IEC 60851-3:2009/AMD2:2019

IEC 60851-3 ®
Edition 3.0 2019-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Winding wires – Test methods –
Part 3: Mechanical properties
Fils de bobinage – Méthodes d'essai –
Partie 3: Propriétés mécaniques

IEC 60851-3:2009-01/AMD2:2019-08(en-fr)

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IEC 60851-3 ®
Edition 3.0 2019-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Winding wires – Test methods –

Part 3: Mechanical properties
Fils de bobinage – Méthodes d'essai –

Partie 3: Propriétés mécaniques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-7208-4

– 2 – IEC 60851-3:2009/AMD2:2019
© IEC 2019
FOREWORD
This amendment has been prepared by IEC technical committee 55: Winding wires.
The text of this amendment is based on the following documents:
FDIS Report on voting
55/1781/FDIS 55/1798/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base 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• withdrawn,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.
_____________
5.5 Adherence test
Replace the existing subclause by the following:
5.5 Adherence test
A straight piece of wire of about 300 mm length shall be elongated in accordance with
Clause 3 to the percentage specified in the relevant standard.
5.5.1 Enamelled rectangular wire
Before elongation, the coating shall be cut circumferentially through to the conductor at a
point approximately in the centre of the measured length. After elongation, the specimen shall
be examined for loss of adhesion.
One specimen shall be tested. If loss of adhesion is observed, as determined by longitudinal
measurement from the cut, it shall be reported. If so, the length of loss of adhesion shall be
measured in one direction from the cut. The maximum value observed shall be reported after
examining all sides of the specimen, under a magnification of six to ten times.
5.5.2 Impregnated fibre covered round and rectangular wire
Before elongation, the insulation shall be cut circumferentially at two places 100 mm apart in
the centre of the wire specimen through to the conductor. After elongation, the specimen shall
be examined for loss of adhesion under a magnification of six to ten times.
One specimen shall be tested. If loss of adhesion is observed according to the relevant
specification, it shall be reported.

© IEC 2019
5.5.3 Fibre covered enamelled round and rectangular wire
Before elongation, the insulation shall be cut circumferentially at two places 100 mm apart in
the centre of the wire specimen through to the conductor. After elongation, the specimen sh
...