IEC 62689-1:2016

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, abbreviations and symbols
4 Choice of FPI requirements according to network
   and fault type
5 Overview of applications
6 Application with regard to network configuration
   and operation
7 FPI's/DSU's main elements
8 FPI/DSU classification and usage classes (data model
   and profile definition, testing)
9 Service conditions
10 Ratings
11 Design and construction
12 Tests
Annex A (informative) - Example of guide for the selection
        of equipment according to use - information to be
        provided with inquiries, tenders, and orders
Annex B (informative) - Examples of possible FPI/DSU
        architectures
Annex C (informative) - Examples of FPI/DSU regarding
        communication capabilities
Bibliography

IEC 62689-1:2016 defines the minimum requirements (therefore performances) and consequent classification and tests (with the exception of functional and communication ones) for fault passage indicators (FPIs) and distribution substation units (DSUs) (including their current and/or voltage sensors), which are, respectively, a device or a device/combination of devices and/or functions able to detect faults and provide indications about their localization.