AS/NZS 2947.4:1999
Insulators - Porcelain and glass for overhead power lines - Voltages greater than 1000 V a.c. - Test methods - Insulator strings and insulator sets
Specifies procedures for electrical and mechanical tests on insulators of ceramic material or glass for use on a.c. overhead power and traction lines with a nominal voltage greater than 100 Hz. This Standard applies to insulator strings and sets. This Standard is identical with and has been reproduced from IEC 60383-2:1993.
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AS/NZS 2947.4:1999 INSULATORS—PORCELAIN AND GLASS FOR OVERHEAD POWER LINES-VOLTAGES GREATER THAN 1000 V a.c. - TEST METHODS...
PREFACE
CONTENTS
Section 1:General
1 Scope
2 Normative references
3 Definitions
3.1 Insulator string
3.2 Insulator set
3.2.1 Suspension insulator set
3.2.2 Tension insulator set
3.3 Flash-over
3.4 Dry lightning impulse withstand voltage
3.5 50% dry lightning impulse flash-over voltage
3.6 Wet power-frequency withstand voltage
3.7 Wet power-frequency flash-over voltage
3.8 Wet switching impulse withstand voltage
3.9 50% wet switching impulse flash-over voltage
4 Electrical values which characterize an insulator string or an insulator set
Section 2:Test procedures for electrical tests
5 General requirements for high voltage tests
6 Standard atmospheric conditions and correction factors for electrical tests
6.1 Standard reference atmosphere
6.2 Correction factors for atmospheric conditions
7 Artificial rain parameters for wet tests
8 Mounting arrangements for electrical tests
9 Lightning impulse voltage tests
10 Wet power-frequency voltage tests
11 Wet switching impulse voltage tests
12 Methods of mounting
12.1 Standard mounting arrangement of an insulator string or insulator set when switching impulse tests are not required
12.2 Standard mounting arrangement of an insulator string or insulator set when switching impulse tests are required
12.3 Mounting arrangement reproducing service conditions
ANNEX A - LIST OF NORMATIVE DOCUMENTS GIVEN FOR INFORMATION
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AS/NZS 2947.4:1999 INSULATORS—PORCELAIN AND GLASS FOR OVERHEAD POWER LINES-VOLTAGES GREATER THAN 1000 V a.c. - TEST METHODS...
PREFACE
CONTENTS
Section 1:General
1 Scope
2 Normative references
3 Definitions
3.1 Insulator string
3.2 Insulator set
3.2.1 Suspension insulator set
3.2.2 Tension insulator set
3.3 Flash-over
3.4 Dry lightning impulse withstand voltage
3.5 50% dry lightning impulse flash-over voltage
3.6 Wet power-frequency withstand voltage
3.7 Wet power-frequency flash-over voltage
3.8 Wet switching impulse withstand voltage
3.9 50% wet switching impulse flash-over voltage
4 Electrical values which characterize an insulator string or an insulator set
Section 2:Test procedures for electrical tests
5 General requirements for high voltage tests
6 Standard atmospheric conditions and correction factors for electrical tests
6.1 Standard reference atmosphere
6.2 Correction factors for atmospheric conditions
7 Artificial rain parameters for wet tests
8 Mounting arrangements for electrical tests
9 Lightning impulse voltage tests
10 Wet power-frequency voltage tests
11 Wet switching impulse voltage tests
12 Methods of mounting
12.1 Standard mounting arrangement of an insulator string or insulator set when switching impulse tests are not required
12.2 Standard mounting arrangement of an insulator string or insulator set when switching impulse tests are required
12.3 Mounting arrangement reproducing service conditions
ANNEX A - LIST OF NORMATIVE DOCUMENTS GIVEN FOR INFORMATION
AS/NZS 2947.4:1999
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Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.