IEVref:447-02-07ID:
Language:enStatus: Standard
Term: cycle, <for a measuring relay or protection equipment> verb
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Definition: to operate and then to reset or vice-versa

initial condition characteristic quantity for under relay operate value operate value characteristic quantity for over relay operate signal operate time operate operate condition disengage value disengage value disengage disengage condition disengage hysteresis disengage hysteresis disengage time

Figure 1 – Explanatory diagram for operate condition

characteristic quantity under relay characteristic quantity over relay reset reset condition reset value reset value reset timeoutput signals

a) Output circuits are fully reset before all internal status are reset

characteristic quantity (for under... relay) characteristic quantity (for over... relay) reset value reset value reset reset condition reset timeoutput signals

b) Output circuits are fully reset after all internal status are reset

Figure 2 – Explanatory diagram for reset condition


Publication date:2020-05
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