Timer Characteristics - ABB RELION 611 Series Technical Manual

1MRS757454 D
4.1.1.6
611 series
Technical Manual
Table 66: Measurement modes supported by PHxPTOC stages
Measurement mode
RMS
DFT
Peak-to-Peak
P-to-P + backup
For a detailed description of the measurement modes, see the
Measurement modes

Timer characteristics

PHxPTOC supports both DT and IDMT characteristics. The user can select the timer
characteristics with the Operating curve type and Type of reset curve settings. When
the DT characteristic is selected, it is only affected by the Operate delay time and Reset
delay time settings.
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. 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 Operating curve
type values "ANSI Def. Time" or "IEC Def. 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 67: 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
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PHLPTOC PHHPTOC
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PHLPTOC
Section 4
Protection functions
PHIPTOC
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PHHPTOC
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