ABB Relion 670 Series Applications Manual page 139
Bay control
Hide thumbs
Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
Table of Contents
Advertisement
1MRK 511 401-UEN Rev. K
IEC09000636 V2 EN-US
Figure 60: Directional function characteristic
1.
RCA = Relay characteristic angle
2.
ROA = Relay operating angle
3.
Reverse
4.
Forward
8.2.3.1
Settings for each step
DirModex : The directional mode of step x . Possible settings are Off / Non-directional / Forward /
Reverse .
Characteristx : Selection of time characteristic for step x . Definite time delay and different
types of inverse time characteristics are available according to Table 19.
Table 19:
Curve name
ANSI Extremely Inverse
ANSI Very Inverse
ANSI Normal Inverse
ANSI Moderately Inverse
Table continues on next page
Bay control REC670
Application manual
3
2
x means step 1, 2, 3 and 4.
Inverse time characteristics
© Copyright 2017 Hitachi Power Grids. All rights reserved
U
1
2
4
I
dir
IEC09000636_2_vsd
Section 8
Current protection
ref
M12982-19 v10
133
Advertisement
Table of Contents
