Electrical Power Cable Engineering, 3rd Edition

19	Treeing William A. Thue

CONTENTS

19.1    Introduction

19.2    Background

19.3    Water Trees

19.3.1    Mechanisms of Water Treeing

19.3.1.1    Treeing mechanisms

19.3.1.2    Treeing Propagation

19.3.1.3    Examples of water Trees

19.3.1.4    Methods to Minimize Water Treeing

19.3.2    Introduction to Accelerated Testing

19.4    Electrical Trees

19.5    Combinations of Electrical and Water Trees

19.6    Laboratory Testing

19.7    Technical Discussion of Treeing

19.8    Methylene Blue Dying Technique

19.9    Observation in Silicone Oil

References

19.1  INTRODUCTION

Treeing in extruded dielectric cable insulation is the term that has been given to a type of electrical prebreakdown deterioration that has the general appearance of a tree-like ...