In this TB, a harmonised test method for measuring methane content in XLPE power cable insulation systems is presented. The WG has performed round robin testing and found that the method is reliable and that it can be adapted to some extent to fit available lab resources if care is taken to avoid certain pitfalls.

Table of content

1. Introduction

1.1. Background and Context to Scope
1.2. Terms of Reference - Scope
1.3. Appreciation of Contributors

2. Harmonised test for determination of methane concentration in XLPE

2.1. Test overview
2.2. Preparation of the cable sample in the flask
2.3. GC equipment, calibration and preparations
2.4. Measurement

3. Round-robin test

3.1. Test execution
3.2. Test results

4. Specific method description for each lab

4.1. Lab 1 method
4.2. Lab 2 method
4.3. Lab 3 method
4.4. Lab 4 method
4.5. Lab 5 method
4.6. Lab 6 method
4.7. Lab 7 method

5. Conclusions and recommendations for future work
Appendix A Definitions, abbreviations and symbols

A.1. General terms
A.2. Specific terms

Appendix B Links and references
Appendix C Supporting information

C.1. Checklist and Experience to date
C.2. Methane Degassing End-effects
C.3. Methane concentration safety calculation
C.4. Influence of bottle temperature during gas sampling
C.5. Calibration robustness

Additional informations

Publication type Technical Brochures
Reference 850
Publication year
Publisher CIGRE
ISBN 978-2-85873-555-6
Study committees
Working groups JWG D1/B1.49
File size 4 MB
Pages number 48
Price for non member 100 €
Price for member Free

Authors

M. JARVID, Convenor (NO), D. NILSSON, Secretary (SE)

S. CREE ( CH), J. KJELLQVIST (FI), J.H. NAM (KR), O. PARRA (MX), A. ROLLA (IT)

Corresponding Members
K.M. BENGTSSON (NO), W. BOONE (NL), T. SAKURAI (JP)

Keywords

materials, emerging test techniques, insulated cables

Harmonised test for the measurement of residual methane in insulating materials