ABB RELION REX640 Technical Manual page 330

Protection functions
4.1.1.7 Timer characteristics
PHxPTOC supports both DT and IDMT characteristics. The user can select the timer
characteristics with the
When the DT characteristic is selected, it is only affected by the
and
The protection relay provides 16 IDMT characteristics curves, of which seven comply
with the IEEE C37.112 and six with the IEC 60255-3 standard. Two curves follow the
special characteristics of ABB praxis and are referred to as RI and RD. One curve is
for rectifier bridge protection. In addition to this, a user programmable curve can
be used if none of the standard curves are applicable. The DT characteristics can be
chosen by selecting the
Time". The functionality is identical in both cases.
The timer characteristics supported by different stages comply with the list in
the IEC 61850-7-4 specification, indicate the characteristics supported by different
stages:
Table 364: Timer characteristics supported by different stages
Operating curve type
(1) ANSI Extremely Inverse
(2) ANSI Very Inverse
(3) ANSI Normal Inverse
(4) ANSI Moderately Inverse
(5) ANSI Definite Time
(6) Long Time Extremely Inverse
(7) Long Time Very Inverse
(8) Long Time Inverse
(9) IEC Normal Inverse
(10) IEC Very Inverse
(11) IEC Inverse
(12) IEC Extremely Inverse
(13) IEC Short Time Inverse
(14) IEC Long Time Inverse
(15) IEC Definite Time
(17) User programmable
(18) RI type
(19) RD type
(20) UK rectifier
2
Available only in REG615 standard configurations C and D
330
For a detailed description of the measurement modes, see
Measurement modes
Operating curve type and Type of reset curve settings.
Reset delay time settings.
Operating curve type values "ANSI Def. Time" or "IEC Def.
in this manual.
PHLPTOC
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1MRS759142 F
Chapter 11.6
Operate delay time
PHHPTOC
x
x
x
x
x
x
x
x
REX640
Technical Manual