AS/NZS 1767.2.1:2024
Insulating liquids, Part 2.1: Determination of the breakdown voltage at power frequency – Test method
Standard identically adopts IEC 60156:2018, which specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency.
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AS/NZS 1767.2.1:2024 Insulating liquids Determination of the breakdown voltage at power frequency - Test method (IEC 60156:2018, IDT)
Preface
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Electrical apparatus
4.1 General
4.2 Voltage regulator
4.3 Step-up transformer
4.4 Switching system
4.5 Current-limiting resistors
4.6 Measuring system
5 Test assembly
5.1 General
5.2 Test cell
5.3 Electrodes
5.4 Stirring device
6 Preparation of electrodes
7 Test assembly preparation
8 Sampling
9 Test procedure
9.1 Sample preparation
9.2 Filling of the cell
10 Application of the voltage
11 Report
12 Test data dispersion and reproducibility
12.1 Test data dispersion
12.2 Reproducibility
Annex A (informative) Improved test method
Annex B (informative) Special test methods for low volume samples
Annex C (informative) Representative material for a performance test
Bibliography
Figure 1 — Examples of test cells with spherical electrodes 12,5 mm to 13,0 mm diameter
Figure 2 — Examples of test cells with partially spherical electrodes with 25 mm radius and diameter of 36 mm
Figure 3 — Graphical representation of coefficient of variation versus mean breakdown voltage
Figure A.1 — Example of a sequence of breakdown shots for determination of the breakdown voltage
Figure B.1 — Example of low volume test cell, fixed electrode distance of 2 mm with 2 ml active volume under dielectric stress
Figure B.2 — Example of low volume test cell, fixed electrode distance of 2,5 mm (150 ml to 200 ml)
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AS/NZS 1767.2.1:2024 Insulating liquids Determination of the breakdown voltage at power frequency - Test method (IEC 60156:2018, IDT)
Preface
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Electrical apparatus
4.1 General
4.2 Voltage regulator
4.3 Step-up transformer
4.4 Switching system
4.5 Current-limiting resistors
4.6 Measuring system
5 Test assembly
5.1 General
5.2 Test cell
5.3 Electrodes
5.4 Stirring device
6 Preparation of electrodes
7 Test assembly preparation
8 Sampling
9 Test procedure
9.1 Sample preparation
9.2 Filling of the cell
10 Application of the voltage
11 Report
12 Test data dispersion and reproducibility
12.1 Test data dispersion
12.2 Reproducibility
Annex A (informative) Improved test method
Annex B (informative) Special test methods for low volume samples
Annex C (informative) Representative material for a performance test
Bibliography
Figure 1 — Examples of test cells with spherical electrodes 12,5 mm to 13,0 mm diameter
Figure 2 — Examples of test cells with partially spherical electrodes with 25 mm radius and diameter of 36 mm
Figure 3 — Graphical representation of coefficient of variation versus mean breakdown voltage
Figure A.1 — Example of a sequence of breakdown shots for determination of the breakdown voltage
Figure B.1 — Example of low volume test cell, fixed electrode distance of 2 mm with 2 ml active volume under dielectric stress
Figure B.2 — Example of low volume test cell, fixed electrode distance of 2,5 mm (150 ml to 200 ml)
AS/NZS 1767.2.1:2024
Online Library subscription information
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.