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Effective analog low pass filter for suppressing harmonics when measuring frequency, df/dt
and vector surge.
Digital filtering of the measured values by using discrete Fourier analysis to suppress
higher harmonics and d.c. components induced by faults or system operations.
Integrated functions for voltage, frequency, df/dt and vector surge in one device.
Voltage supervision each with two step under-/and overvoltage detection.
Frequency supervision with three step under-/or over frequency (user setting).
Completely independent time settings for voltage and frequency supervision.
User configurable vector surge measurement 1-of-3 or 3-of-3.
Adjustable voltage threshold value for the blocking of frequency-, df/dt or vector surge
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