ABB REG316 4 Series - Page 159

REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-121
· MIN (1ph): Pick-up when the lowest phase voltage falls
below the setting.
· MIN (3ph): Pick-up when the highest phase voltage also
falls below the setting. This setting is not per-
mitted, if the function is set to single-phase
measurement.
HEST 905 055 C
U
N
0
t
U
Delay Delay
Stage 1
Stage 2
V-Setting
V-Setting
Fig. 3.5.11.1 Operating characteristic of the definite time over-
voltage function
U
N
= rated voltage of the protection
Typical settings:
Stage 1
V-Setting 1.15 U
N
Delay 2 s
MaxMin MAX (1ph)
Stage 2
V-Setting 1.4 U
N
Delay 0.1 s
MaxMin MAX (1ph)