ABB REB670 - Settings for each Step

GUID-F7AA2194-4D1C-4475-8853-C7D064912614 v4
When inverse time overcurrent characteristic is selected, the trip time
of the stage will be the sum of the inverse time delay and the set
definite time delay. Thus, if only the inverse time delay is required, it is
important to set the definite time delay for that stage to zero.
7.4.3.1 Settings for each step
GUID-CFB327EF-C5C4-44B5-AB4B-9C2916355FC5 v5
x means step 1, 2, 3 and 4.
DirModeSelx: The directional mode of step x. Possible settings are off/nondirectional/
forward/reverse.
Characteristx
: Selection of time characteristic for step x. Definite time delay and
different types of inverse time characteristics are available.
Table 31: Inverse time characteristics
Curve name
ANSI Extremely Inverse
ANSI Very Inverse
ANSI Normal Inverse
ANSI Moderately Inverse
ANSI/IEEE Definite time
ANSI Long Time Extremely Inverse
ANSI Long Time Very Inverse
ANSI Long Time Inverse
IEC Normal Inverse
IEC Very Inverse
IEC Inverse
IEC Extremely Inverse
IEC Short Time Inverse
IEC Long Time Inverse
IEC Definite Time
User Programmable
ASEA RI
RXIDG (logarithmic)
1MRK 505 370-UUS A Section 7
Current protection
Busbar protection REB670 2.2 ANSI 207
Application manual