Frequency Protection - ABB REG316 4 Series Operating Instructions Manual

REG 316*4 1MRB520049-Uen / Rev. F
3.5.18. Frequency protection (Frequency)
A. Application
Under and overfrequency
·
Load-shedding.
·
B. Features
measurement of one voltage
·
frequency calculation based on the complex voltage vector
·
insensitive to DC component
·
insensitive to harmonics
·
undervoltage blocking.
·
C. Inputs and outputs
I. C.t./v.t. inputs:
·
II. Binary inputs:
·
III. Binary outputs:
·
·
·
IV. Measurements:
·
·
voltage
blocking
undervoltage blocking
start
trip
frequency
voltage.
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