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IEC 60255-3:1971 ed1.0

Заменен
Electrical relays - Part 3: Single input energizing quantity measuring relays with non-specified time or with independent specified time — 91 стр.
Definitions. Standard values relating to energizing quantities influencing quantities. Fundamental characteristics relating to temperature rises and behaviour in service. Accuracy requirements relating to the characteristic quantity and specified times. Mechanical and electrical requirements. Markings and data. Methods of measurement.
ICS
29.120.70 Relays / Реле