IEC 60255-12:1980
Current
The latest, up-to-date edition.
Electrical relays - Part 12: Directional relays and power relays with two input energizing quantities
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English - French
01-01-1980
FOREWORD
PREFACE
SECTION ONE - SCOPE AND DEFINITIONS
Clause
l. Scope
2. Definitions
SECTION TWO - REQUIREMENTS
3. Standard values
4. Operation and accuracy
5. Methods of presenting relay characteristic and
performance
6. Thermal requirements
7. Mechanical requirements
8. Values of the limits of the operative range of the
auxiliary energizing quantities
9. Contact performance
10. Rated burden
11. Insulation
12. Marking and data
13. High frequency disturbance test
SECTION THREE - TEST METHODS
14. Tests related to accuracy and operating characteristics
15. Tests for thermal requirements
16. Tests for mechanical requirements
FIGURES
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