-3V
0
=V
ref
3I
0
RCA = 0
°
3I
0
cos
Operate area
ROA
en06000650_ansi.vsd
ANSI06000650-2-
vsd
V
ref
=-
3V
o
ANSI06000650 V2 EN
Figure 108:
Characteristic with ROADir restriction
The function indicates forward/reverse direction to the fault. Reverse direction is defined
as 3I
0
·cos (φ + 180°) ≥ the set value.
It is also possible to tilt the characteristic to compensate for current transformer angle error
with a setting
RCAComp
as shown in the figure
1MRK 506 335-UUS A
Section 7
Current protection
239
Technical manual
Содержание REL650 series
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