REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-139
3.5.12. Peak value overvoltage (Voltage-Inst)
A. Application
· General voltage monitoring with instantaneous response
(over and undervoltage)
· Voltage monitoring where insensitive to frequency is required
(over and undervoltage).
B. Features
· processes instantaneous values and is therefore fast and
largely independent of frequency
· stores the peak value following pick-up
· no suppression of DC component
· no suppression of harmonics
· single and three-phase measurement
· maximum value detection in the three-phase mode
· adjustable lower frequency limit f
min
.
C. Inputs and outputs
I. C.t./v.t. inputs
· voltage
II. Binary inputs
· blocking
III. Binary outputs
· pick-up
· tripping
IV. Measurements
· voltage amplitude (only available if function trips).