BS EN 60137:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Ratings
5 Operating conditions
6 Ordering information and markings
7 Test requirements
8 Type tests
9 Routine tests
10 Requirements and tests for non-capacitance
   graded voltages for equipment up to and
   including 52 Kv
11 Recommendations for transport, storage, erection,
  operation and maintenance
12 Safety
13 Environmental aspects
Annex A (informative) - Determination of the hottest spot
        in bushings with conductors embedded in the insulation
        material
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their corresponding
         European publications

Defines the characteristics and tests for insulated bushings.

This International Standard specifies the characteristics and tests for insulated bushings. This standard is applicable to bushings, as defined in Clause3, intended for use in electrical apparatus, machinery, transformers, switchgear and installations for three-phase alternating current systems, having highest voltage for equipment above 1000V and power frequencies of 15Hz up to and including 60Hz. Subject to special agreement between purchaser and supplier, this standard may be applied, in part or as a whole, to the following: bushings used in other than three-phase systems; bushings for high-voltage direct current systems; bushings for testing transformers; bushings for capacitors. Special requirements and tests for transformer bushings in this standard apply also to reactor bushings. This standard is applicable to bushings made and sold separately. Bushings which are a part of an apparatus and which cannot be tested according to this standard should be tested with the apparatus of which they form part.