EN 60851-5:1996/A2:2004

SLOVENSKI SIST EN 60851-5:2001/A2:2004

STANDARD
september 2004
Navijalne žice - Preskusne metode - 5. del: Električne lastnosti
Winding wires - Test methods - Part 5: Electrical properties
ICS 29.060.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60851-5/A2
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2004
ICS 29.060.10
English version
Winding wires –
Test methods
Part 5: Electrical properties
(IEC 60851-5:1996/A2:2004)
Fils de bobinage –  Wickeldrähte –
Méthodes d'essai Prüfverfahren
Partie 5: Propriétés électriques Teil 5: Elektrische Eigenschaften
(CEI 60851-5:1996/A2:2004) (IEC 60851-5:1996/A2:2004)

This amendment A2 modifies the European Standard EN 60851-5:1996; it was approved by CENELEC
on 2004-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this amendment the status of a national standard without any
alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60851-5:1996/A2:2004 E

Foreword
The text of document 55/903A/FDIS, future amendment 2 to IEC 60851-5:1996, prepared by
IEC TC 55, Winding wires, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as amendment A2 to EN 60851-5:1996 on 2004-07-01.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-04-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2007-07-01
__________
Endorsement notice
The text of amendment 2:2004 to the International Standard IEC 60851-5:1996 was approved by
CENELEC as an amendment to the European Standard without any modification.
__________
NORME CEI
INTERNATIONALE
IEC
60851-5
INTERNATIONAL
STANDARD
AMENDEMENT 2
AMENDMENT 2
2004-06
Amendement 2
Fils de bobinage – Méthodes d'essai –
Partie 5:
Propriétés électriques
Amendment 2
Winding wires – Test methods –
Part 5:
Electrical properties
 IEC 2004 Droits de reproduction réservés  Copyright - all rights reserved
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
L
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60851-5 Amend. 2  IEC:2004 – 3 –
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
55/903A/FDIS 55/906/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 the base publication and its amendments will
remain unchanged until the maintenance result 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.
_____________
Page 9
1 Scope
Add the following test:
― Test 23: Pin hole.
3 Test 5: Electrical resistance
Replace the text of the formula with the following:
t is the actual temperature in degrees Celsius during the measurement;
–1
α is the temperature coefficient in K .
On page 11, replace the coefficients in the fifth paragraph of Test 5 with the following:
–3 –1
– for copper:  α = 3,96 x 10 K ;
–3 –1
– for aluminium: α = 4,07 x 10 K .
4.2 Equipment
Add the following tolerance for the polished metal cylinder:
– polished metal cylinder, 25 mm ± 1 mm in diameter…

60851-5 Amend. 2  IEC:2004 – 5 –
Add the following new text:
– metal mandrel, 50 mm ± 2 mm in diameter;
– metal mandrel, 25 mm ± 1 mm in diameter;

Page 13
4.4.1 Test at room temperature
Replace the text of Subclause 4.4.1 by the following:
A straight piece of wire, approximately 400 mm in length, with the insulation removed at both
ends, shall be twisted back on itself for a distance of (125 ± 5) mm on the twisting device as
shown in Figure 2. The ends of the wire shall be joined, and the load applied with the number
of twists, as given in Table 3. The loop at the end of the twisted section shall be cut at two
places to provide a maximum spacing between the cut ends. Any bending to ensure adequate
separation between the two wire ends shall avoid sharp bends or damage to the coating.
The test voltage shall be applied according to 4.1 between the conductors of the wires.
Five specimens shall be tested. The five single values shall be reported.

Page 15
Replace the title of Table 3 by the following new title:
Table 3 – Loads applied to the wire and number of twists
4.5.1 Test at room temperature
Replace the first, second and third paragraphs of Subclause 4.5.1 with the following:
A straight piece of wire of sufficient length, with the insulation removed at one end, shall be
bent around a mandrel as shown in Figure 3.
The diameter of the mandrel shall be 50 mm ± 2 mm.
The specimen shall be placed in the container and shall be surrounded by at least 5 mm of
shot. The ends of the specimen shall be sufficiently long to avoid flashover.

60851-5 Amend. 2  IEC:2004 – 7 –
4.5.2 Test at elevated temperature
Replace the text of Subclause 4.5.2 with the following:
A specimen prepared according to 4.5.1 shall be placed in the oven preheated to the
specified test temperature ±3 °C. The shot and container shall be preheated within the oven
at the test temperature and kept there during the loading of the test specimen. The loading
operation of the test specimen shall be performed very gently in order to avoid damage to the
specimen.
The test voltage shall be applied according to 4.1 between the conductor and the shot in not
less than 15 min after placing the specimen in the oven. The test shall be completed within
30 min.
The temperature shall be kept within ±3 °C.
Five specimens shall be tested. The five single values shall be reported.

Page 17
4.6 Rectangular wire
Replace the title and the text of Subclause 4.6 by the following:
4.6 Fibre wound round wire
4.6.1 Test at room temperature
A straight piece of wire of sufficient length with the insulation removed at one end shall be
bent 10 turns around a mandrel as shown in Figure 3a. The diameter of the mandrel shall be
– 25 mm ± 1 mm for nominal diameter up to and including 2,500 mm;
– 50 mm ± 2 mm for nominal diameter over 2,500 mm.
The specimen shall be placed in the container as shown in Figure 3a and shall be surrounded
by at least 5 mm of shot. The ends of the specimen shall be sufficiently long to avoid
flashover.
The shot shall be poured gently into the container until the specimen is covered by at least
5 mm of shot. The metal shot shall not be more than 2 mm in diameter; balls of stainless
steel, nickel or nickel-plated iron have been found suitable. The shot shall be cleaned once
per year.
The test voltage shall be applied according to 4.1 between the conductor of the wire and the
shot.
NOTE By agreement between the purchaser and the supplier, the test may be carried out with the specimen
under oil.
Five specimens shall be tested. The five single values shall be reported.

60851-5 Amend. 2  IEC:2004 – 9 –

Test voltage electrodes
Bent wire specimen
~
Filling of metal shot not
more than 2 mm
diameter
≥5 ≥5
Space between one turn
and the the other turn
2,5 mm min.
IEC  730/04
Figure 3a – Specimen for the breakdown voltage test

∅25
or
∅50
≥5
60851-5 Amend. 2  IEC:2004 – 11 –
4.6.2 Test at elevated temperature
A specimen prepared according to 4.6.1 shall be placed in the oven preheated to the
specified test temperature ±3 °C. The shot and container shall be preheated within the oven
at the test temperature and kept there during the loading of the test specimen. The loading
operation of the test specimen shall be performed very gently in order to avoid damage to the
specimen. The test voltage shall be applied according to 4.1 between the conductor and the
shot in not less than 15 min after placing the specimen in the oven. The test shall be
completed within 30 min.
The temperature shall be kept within ±3 °C.
Five specimens shall be tested. The five single values shall be reported.

Add the following new Subclause 4.7:
4.7 Rectangular wire
4.7.1 Test at room temperature
A straight piece of wire approximately 350 mm in length with the insulation removed at one
end shall be bent on the flat around a mandrel as shown in Figure 3. The diameter of the
mandrel shall be
– 25 mm ± 1 mm for nominal thicknesses up to and including 2,500 mm;
– 50 mm ± 2 mm for nominal thicknesses over 2,500 mm.
The specimen shall be placed in the container and shall be surrounded by at least 5 mm of
shot. The ends of the specimen shall be sufficiently long to avoid flashover.
The shot shall be poured gently into the container until the specimen is covered by at least
5 mm of shot. The metal shot shall not be more than 2 mm in diameter; balls of stainless
steel, nickel or nickel-plated iron have been found suitable. The shot shall be cleaned
periodically.
The test voltage shall be applied according to 4.1 between the conductor of the wire and the
shot.
NOTE By agreement between purchaser and supplier, the test may be carried out with the specimen under oil.
Five specimens shall be tested. The five single values shall be reported.
4.7.2 Test at elevated temperature
A specimen prepared according to 4.7.1 shall be placed in the oven preheated to the
specified test temperature ±3 °C. The shot and container shall be preheated within the oven
at the test temperature and kept there during the loading of the test specimen. The loading
operation of the test specimen shall be performed very gently in order to avoid damage to the
specimen. The test voltage shall be applied according to 4.1 between the conductor and the
shot in not less than 15 min after placing the specimen in the oven. The test shall be
completed within 30 min.
The temperature shall be kept within ±3 °C.
Five specimens shall be tested. The five single values shall be reported.

60851-5 Amend. 2  IEC:2004 – 13 –
5.1 Low-voltage continuity (nominal conductor diameter up to and including 0,050 mm)
Replace the text of Subclause 5.1 by the following:
A wire sample of 30 ± 1 m shall be pulled with a speed of (275 ± 25) mm/s between two felt
pads, which shall be immersed in an electrolytic solution of sodium sulphate in water (30 g/l)
with the conductor of the wire and the solution connected to an electrical circuit with an open-
circuit d.c. test voltage of (50 ± 3) V (see Figure 4). The force applied to the wire shall not
exceed 0,03 N. Faults shall be detected by means of a suitable relay along with a counter.
The counter shall operate when the wire coating has a resistance of less than 10 kΩ for a
period of at least 0,04 s. The counter shall not operate when the resistance is 15 kΩ or more.
The fault detection circuit shall operate with a speed response of (5 ± 1) m/s and with a fault
counter repeating at a rate of (500 ± 25) counts per minute when a bare wire is tested.
One test shall be made. The number of faults per 30 m of wire length shall be reported.

Page 19
5.2.2 Equipment
Replace the first dash of Subclause 5.2.2 with the following:
– high-voltage power supply providing a smooth filtered d.c. voltage with a ripple content
less than 5 %, with an open-circuit test voltage adjustable from 350 V to 2 000 V with a
short-circuit current of (25 ± 5) μA at any test voltage and with not more than 75 % drop in
voltage in case of a 50 MΩ fault resistance;

Page 21
5.2.3 Procedure
Replace the text in Subclause 5.2.3 above Table 5 with the following:
A wire sample of 30 m ± 1 m shall be pulled with a speed of (275 ± 25) mm/s over the high-
voltage electrode pulley with the conductor of the wire and the electrode connected to the
electrical circuit, with the open-circuit d.c. test voltage adjusted according to Table 5 with a
tolerance of ±5 % and with a positive polarity with respect to the earthed conductor of the
wire.
6.2 Equipment
Replace the text in Subclause 6.2 with the following:
The following equipment shall be used:
– impedance meter, which shall operate at the frequency specified in the relevant standard
and which shall provide a precision of ±1 % based on capacitance through the capacitance
range required by the specimen at this frequency;
– frequency generator, which shall have a sinusoidal voltage output with a frequency
specified in the relevant standard;

60851-5 Amend. 2  IEC:2004 – 15 –
– test method A:
me
...