Table 265: Measurement modes supported by EFxPTOC stages
Measurement
mode
Supported measurement modes
EFLPTOC EFHPTOC EFIPTOC
RMS x x
DFT x x
Peak-to-Peak x x x
For a detailed description of the measurement modes, see the
Measurement modes section in this manual.
4.2.1.6 Timer characteristics
EFxPTOC 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 IED 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 user can choose the DT characteristic by selecting the Operating
curve type values "ANSI Def. Time" or "IEC Def. Time". The functionality is
identical in both cases.
The following characteristics, which comply with the list in the IEC 61850-7-4
specification, indicate the characteristics supported by different stages:
Table 266: Timer characteristics supported by different stages
Operating curve type
Supported by
EFLPTOC EFHPTOC
(1) ANSI Extremely Inverse x x
(2) ANSI Very Inverse x
(3) ANSI Normal Inverse x x
(4) ANSI Moderately Inverse x
(5) ANSI Definite Time x x
(6) Long Time Extremely
Inverse
x
(7) Long Time Very Inverse x
(8) Long Time Inverse x
(9) IEC Normal Inverse x x
(10) IEC Very Inverse x x
(11) IEC Inverse x
Table continues on next page
Section 4 1YHT530004D05 D
Protection functions
266 615 series
Technical Manual
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