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EN 61325:1995

(Main)

Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria

Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria

Is applicable to string insulator units of ceramic material or glass for use on d.c. overhead power lines with a nominal voltage greater than 1 000 V. This standard specifies: -the characteristics of insulators; -the conditions under which the specified values of these characteristics shall be verified; -acceptance criteria

Isolatoren für Freileitungen mit einer Nennspannung über 1 kV - Keramik- oder Glasisolatoren für Gleichspannungssysteme - Begriffe, Prüfverfahren und Annahmekriterien

Isolateurs pour lignes aériennes de tension nominale supérieure à 1 kV - Eléments d'isolateurs en céramique ou en verre pour systèmes à courant continu - Définitions, méthodes d'essai et critères d'acceptation

Est applicable aux chaînes d'isolateurs en matière céramique ou en verre destinés aux lignes aériennes de transport d'énergie fonctionnant en cournat continu à une tension nominale supérieure à 1 000 V. La présente norme spécifie: - les caractéristiques des isolateurs; - les conditions dans lesquelles les valeurs spécifiées de ces caractéristiques doivent être vérifiées; - les conditions d'acceptation.

Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria (IEC 1325:1995)

General Information

Status
Published
Publication Date
06-Jun-1995
Withdrawal Date
14-Feb-1996
ICS
29.080.10 - Insulators
Technical Committee
CLC/SR 36 - Insulators for substations
Drafting Committee
IEC/TC 36 - IEC_TC_36
Parallel Committee
IEC/SC 36B - IEC_SC_36B
Current Stage
6060 - Document made available - Publishing
Start Date
07-Jun-1995
Completion Date
07-Jun-1995
Ref Project
SIST EN 61325:1997 - Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria

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SLOVENSKI STANDARD
SIST EN 61325:1997
01-november-1997
Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or
glass insulator units for d.c. systems - Definitions, test methods and acceptance
criteria (IEC 1325:1995)
Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic or glass
insulator units for d.c. systems - Definitions, test methods and acceptance criteria
Isolatoren für Freileitungen mit einer Nennspannung über 1 kV - Keramik- oder
Glasisolatoren für Gleichspannungssysteme - Begriffe, Prüfverfahren und
Annahmekriterien
Isolateurs pour lignes aériennes de tension nominale supérieure à 1 kV - Eléments
d'isolateurs en céramique ou en verre pour systèmes à courant continu - Définitions,
méthodes d'essai et critères d'acceptation
Ta slovenski standard je istoveten z: EN 61325:1995
ICS:
29.080.10 Izolatorji Insulators
29.240.20 Daljnovodi Power transmission and
distribution lines
SIST EN 61325:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61325:1997

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SIST EN 61325:1997

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SIST EN 61325:1997

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SIST EN 61325:1997

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SIST EN 61325:1997

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SIST EN 61325:1997
NORME CEI
INTERNATIONALE IEC
1325
INTERNATIONAL
Première édition
STANDARD
First edition
1995-03
Isolateurs pour lignes aériennes
de tension nominale supérieure à 1 000 V —
Eléments d'isolateurs en céramique ou en verre
pour systèmes à courant continu —
Définitions, méthodes d'essai et critères
d'acceptation
Insulators for overhead lines with a nominal
voltage above 1 000 V —
Ceramic or glass insulator units
for d.c. systems —
Definitions, test methods and acceptance
criteria
© CEI 1995 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 pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission PRICE CODE
E MewayHapoaHan 3neKrporexHH4ectsafa HOMHCCHI
catalogue en vigueur
Pour prix, voir •
For price, see current catalogue

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SIST EN 61325:1997
1325 © IEC:1995 – 3 –
CONTENTS
Page
FOREWORD 9
SECTION 1: GENERAL
Clause
11
1 Scope
13
2 Normative references
15
3 Definitions
SECTION 2: INSULATORS
23
4 Insulator classes and type
23
5 Insulating materials
23 6 Specified characteristics and features of a d.c. insulator unit
25
7 Identification of insulators
SECTION 3: CLASSIFICATION OF TESTS, SAMPLING RULES AND PROCEDURES
27
8 Classification of tests.
27 8.1 Type tests
27
8.2 Sample tests
27
8.3 Routine tests
9 Quality assurance 29
29 10 Procedures for type and sample tests
29
10.1 Insulator selection for type tests
29 10.2 Sampling rules and procedures for sample tests
31 10.3 Re-test procedure for the sample tests
SECTION 4: TEST PROCEDURES FOR ELECTRICAL TESTS
33
11 General requirements for high-voltage tests.
33
12 Standard atmospheric conditions and correction factors for electrical tests
33 12.1 Standard reference atmosphere
33 12.2 Correction factors for atmospheric conditions
35 13 Mounting arrangements for electrical tests
35
14 Lightning impulse voltage tests
35
14.1 Test procedure
37 14.2 Acceptance criteria
37
15 Dry d.c. voltage tests
37
15.1 Test procedure
37
15.2 Acceptance criteria
37
16 SF6 puncture withstand test
37
16.1 Test method
16.2 Acceptance criteria 39
17 Impulse overvoltage puncture withstand test 39

---------------------- Page: 8 ----------------------

SIST EN 61325:1997
1325 © I EC:1995 - 5 -
Page
Clause
18 Ion migration test 39
39 18.1 Reference conditions used to calculate the expected charge
18.2 Test validity 39
41
18.3 Test procedure
45
18.4 Acceptance criteria
45
19 Electrical body resistance test
45
19.1 Test procedure
45
19.2 Acceptance criteria
45
20 Thermal runaway test
45
20.1 Duration
45
20.2 Procedure
47
20.3 Acceptance criteria
47
21 Routine electrical test
SECTION 5: TEST PROCEDURES FOR MECHANICAL AND OTHER TESTS
49
22 Verification of the dimensions
23 Electromechanical failing load test 49
23.1 Test procedure 49
51
23.2 Acceptance criteria
...

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