CEI EN 50578 : 2014
Current
The latest, up-to-date edition.
RAILWAYS APPLICATIONS - DIRECT CURRENT SIGNALLING RELAYS
Hardcopy , PDF
English
01-01-2014
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Essential requirements of
the relays and their construction
Bibliography
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