BS EN 60422:2013

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Properties and deterioration/degradation of oil
5 Oil tests and their significance
6 Sampling of oil from equipment
7 Categories of equipment
8 Evaluation of mineral insulating oil in new equipment
9 Evaluation of oil in service
10 Handling and storage
11 Treatment
12 Replacement of oil in electrical equipment
13 Passivation
Annex A (informative) - Evaluating water in oil and
        insulation
Annex B (informative) - Particles
Annex C (informative) - Test method for determination
        of sediment and sludge
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Provides guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment.

This International Standard gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment.

This standard is applicable to mineral insulating oils, originally supplied conforming to IEC 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment specifications apply.

This standard is also intended to assist the power equipment operator to evaluate the condition of the oil and maintain it in a serviceable condition. It also provides a common basis for the preparation of more specific and complete local codes of practice.

The standard includes recommendations on tests and evaluation procedures and outlines methods for reconditioning and reclaiming oil and the decontamination of oil contaminated with PCBs.

NOTE The condition monitoring of electrical equipment, for example by analysis of dissolved gases, furanic compounds or other means, is outside the scope of this standard.