Definite Time Over And Undercurrent - ABB REG316 4 Series Operating Instructions Manual

REG 316*4 1MRB520049-Uen / Rev. F
3.5.3. Definite time over and undercurrent (Current-DT)
A. Application
General purpose current function (over and under) for
phase fault protection
·
back-up protection
·
or for monitoring a current minimum.
B. Features
insensitive to DC component
·
insensitive to harmonics
·
single or three-phase measurement
·
maximum respectively minimum value detection in the three-
·
phase mode
detection of inrush currents.
·
C. Inputs and outputs
I. C.t./v.t. inputs:
· Current
II. Binary inputs:
· Blocking
III. Binary outputs:
· pick-up
· tripping
IV. Measurements:
· current amplitude.
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