ABB REG316 4 Series Operating Instructions Manual page 159

REG 316*4 1MRB520049-Uen / Rev. F
·
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.
U
V-Setting
V-Setting
U
N
Delay
0
Fig. 3.5.11.1 Operating characteristic of the definite time over-
voltage function
U
N
Typical settings:
Stage 1
V-Setting
Delay
MaxMin
Stage 2
V-Setting
Delay
MaxMin
Stage 2
Delay
= rated voltage of the protection
1.15 U
N
2 s
MAX (1ph)
1.4 U
N
0.1 s
MAX (1ph)
ABB Switzerland Ltd
Stage 1
t
HEST 905 055 C
3-121