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IEVref:447-05-05ID:
Language:enStatus: Standard
Term: operate time, <of a measuring relay or protection equipment>
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Definition: duration between the instant a specified change is made in the value(s) of the input energizing quantity(ies) that will cause the measuring relay or protection equipment in initial condition to operate and the instant it operates

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


Publication date:2020-05
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