Objavljen
This part includes two types of vibration tests: the vibration response test and the vibration endurance test, and is generally based upon IEC 68-2-6. The requirements are applicable only to measuring relays and protection equipment in a new condition. The tests specified are type tests.
OBJAVLJEN
IEC 60255-21-1:1988 ED1
60.60
Standard objavljen
30. 9. 1988.
Električni releji - Deo 21: Ispitivanja vibracija, ispitivanja na potres, udar i seizmička ispitivanja na mernim relejima i zaštitnoj opremi - Odeljak 1: Ispitivanja vibracija (sinusoidnih)
90.93 Odluka o potvrđivanju standarda