Voltage-Controlled Overcurrent - ABB REG316 4 Series Operating Instructions Manual

REG 316*4 1MRB520049-Uen / Rev. F
3.5.5. Voltage-controlled overcurrent (Imax-Umin)
A. Application
Phase fault protection of generators with rapidly decaying fault
current such that a normal time overcurrent function could reset
before its delay had expired.
B. Features
stores the maximum current value after pick-up
·
· resets either after recovery of the system voltage or after
tripping
processes the positive-sequence component of the voltage
·
insensitive to DC component and harmonics
·
· single or three-phase measurement with detection of the
highest phase value in the three-phase mode.
C. Inputs and outputs
I. Analogue inputs:
·
·
II. Binary inputs:
·
III. Binary outputs:
·
·
IV. Measurements:
·
·
current
voltage
blocking
pick-up
tripping
current amplitude
positive-sequence voltage.
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