9.4
SEL-400 Series Relays Instruction Manual Date Code 20171006
Reporting
Data Processing
The relay samples the control inputs at a rate of 2 kHz. The raw input digital sta-
tus is available in high-resolution (COMTRADE) data files. Contact bounce may
be visible when the raw data are viewed.
The relay filters both types of control inputs with settable debounce timers, and
updates the resulting Relay Word bits every processing interval. Event reports
can include the filtered control input Relay Word bits.
Control input state changes will appear to occur faster in COMTRADE oscillog-
raphy files than in event reports (EVE command) or Sequential Events Recorder
reports (SER command) because of the control input debounce time delays.
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