EN 125500:1996

Foreword
1 Scope
2 General
2.1 Related documents
2.2 Classification
3 Quality assessment procedures
4 Additional information
5 Blank Detail Specification
5.1 Identification of the harmonized Detail
      Specification
5.2 Identification of the core
5.3 Limiting conditions
5.4 Marking of components and package
5.4.1 Component
5.4.2 Package
5.5 Characteristics
5.5.1 Visual inspection
5.5.2 Dimensions
5.5.3 Effective parameters
5.5.4 Electrical properties
5.6 Certified test records
5.7 Additional information
5.8 Ordering information
5.9 Format of the Detail Specification CECC 25 501
Annexes
A Breakdown voltage test of insulated ferrite ring
      cores - Measurement principle
B European standard series of ring cores

This Sectional Specification prescribes the characteristics, ratings and inspection requirements of assessed quality for ring cores made of soft magnetic oxides and iron powders. Such cores are intended for chokes for interference suppression and also for low level signam transformers for professional and industrial applications (see note below). In order to increase winding ease and to improve voltage breakdown, the cores are often provded with protective coatings.In annex A methods for testing voltage breakdown are given; in annex B a standard series of ring cores is listed.NOTE: Ring cores used for power application are covered by CECC 25 300. Ring cores used for other applications (e.g. pulse, memory storage) are not considered here.It selects from the Generic Specification CECC 25 000, the appropriate methods of test to be used in Detail Specifications derived from this specification, and contans the test schedules to be used in the preparation of such specifications. Each test schedule, referenced by a CECC number, when taken with the appropriate information in clause 5 of this specification, forms a Blank Detail Specification.