Rotating electrical machines - Part 18: Functional evaluation of insulation systems - Section 21: Test procedures for wire-wound windings - Thermal evaluation and classification

EN following parallel vote

Drehende elektrische Maschinen - Teil 18: Funktionelle Bewertung von Isoliersystemen - Hauptabschnitt 21: Prüfverfahren für Runddraht-Wicklungen - Thermische Bewertung und Klassifizierung

Machines électriques tournantes - Partie 18: Evaluation fonctionnelle des systèmes d'isolation - Section 21: Procédures d'essai pour enroulements à fils - Evaluation thermique et classification

Rotating electrical machines - Part 18: Functional evaluation of insulation systems - Section 21: Test procedures for wire-wound windings - Thermal evaluation and classification (IEC 60034-18-21:1992/A2:1996)

General Information

Status
Withdrawn
Publication Date
12-Dec-1996
Withdrawal Date
31-Aug-1997
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
9960 - Withdrawal effective - Withdrawal
Start Date
24-Oct-2015
Completion Date
24-Oct-2015

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EN 60034-18-21:1999/A2:1999
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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60034-18-21:1999/A2:1999
01-april-1999
Rotating electrical machines - Part 18: Functional evaluation of insulation systems
- Section 21: Test procedures for wire-wound windings - Thermal evaluation and
classification (IEC 60034-18-21:1992/A2:1996)
Rotating electrical machines -- Part 18: Functional evaluation of insulation systems --
Section 21: Test procedures for wire-wound windings - Thermal evaluation and
classification
Drehende elektrische Maschinen -- Teil 18: Funktionelle Bewertung von Isoliersystemen
-- Hauptabschnitt 21: Prüfverfahren für Runddraht-Wicklungen - Thermische Bewertung
und Klassifizierung
Machines électriques tournantes -- Partie 18: Evaluation fonctionnelle des systèmes
d'isolation -- Section 21: Procédures d'essai pour enroulements à fils - Evaluation
thermique et classification
Ta slovenski standard je istoveten z: EN 60034-18-21:1994/A2:1996
ICS:
29.080.30 Izolacijski sistemi Insulation systems
29.160.01 Rotacijski stroji na splošno Rotating machinery in
general
SIST EN 60034-18-21:1999/A2:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60034-18-21:1999/A2:1999

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SIST EN 60034-18-21:1999/A2:1999

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SIST EN 60034-18-21:1999/A2:1999

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SIST EN 60034-18-21:1999/A2:1999
NORME
CEI
INTERNATIONALE
IEC
34-18-21
INTERNATIONAL
1992
STANDARD
AMENDEMENT 2
AMENDMENT 2
1996-11
Amendement 2
Machines électriques tournantes –
Partie 18:
Evaluation fonctionnelle des systèmes d'isolation –
Section 21: Procédures d'essai pour enroulements
à fils – Evaluation thermique et classification
Amendment 2
Rotating electrical machines –
Part 18:
Functional evaluation of insulation systems –
Section 21: Test procedures for wire-wound
windings – Thermal evaluation and classification
 CEI 1996  Droits de reproduction réservés  Copyright - all rights reserved
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 60034-18-21:1999/A2:1999
34-18-21 Amend. 2  IEC:1996 – 3 –
FOREWORD
This amendment has been prepared by subcommittee 2J: Classification of insulation systems
for rotating machinery, of IEC technical committee 2: Rotating machinery.
The text of this amendment is based on the following documents:
FDIS Report on voting
2J/51/FDIS 2J/58/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.
___________
Page 13
3.4.1  Construction of test objects
Replace the text of the note by the following:
NOTE – It is recognized that markedly different values of test life can be obtained for the same insulating
materials, depending on insulation thicknesses and creepage distances.
Page 15
3.7  Ageing temperature and subcycle lengths
Replace the fourth paragraph by the following:
Ageing temperatures and lengths of ageing subcycles should be selected from table 2 of
Section 1.
Replace, on page 17, the seventh paragraph by the following:
In addition, at least two higher ageing temperatures should be selected, separated by intervals
of 20 K or more. Intervals of 10 K may be used when tests are made at more than three ageing
temperatures.
Page 17
4.1.1  Procedure 1
Replace the existing text by the following:
This procedure, using "motorette" type models as test objects, shall be referred to as IEC 34-18-21,
Procedure 1.

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SIST EN 60034-18-21:1999/A2:1999
34-18-21 Amend. 2  IEC:1996 – 5 –
Page 23
5.1.1  Procedure 2
Replace the existing text by the following:
This procedure, using actual motors as test objects, shall be referred to as IEC 34-18-21,
Procedure 2.
5.1.2  General features
Replace the fourth paragraph by the following:
Even though actual motors are tested, the results may not be used to determine endurance
time in actual service in an absolute sense. The tests may be used as a means of classification
only by comparing insulation systems.
Page 25
5.3.2  Means of heating
Replace the first paragraph by the following:
The mode of heat generation is dictated by the type of motor being used in the test and the
laboratory equipment available. Higher than normal winding temperatures can be obtained by
increasing motor losses by such means as enlarging the air gap, starting and reversing each
motor, superimposition of direct current on the normal alternating current, or by increasing the
temperature of the air surrounding the motor. For temperature re
...

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