Timer Characteristics - ABB RED615 Technical Manual

1YHT530004D05 D
4.1.2.5
615 series
Technical Manual
The timer calculates the start duration value START_DUR, which indicates the
percentage ratio of the start situation and the set operation time. The value is
available in the monitored data view.
Blocking logic
There are three operation modes in the blocking functionality. The operation modes
are controlled by the BLOCK input and the global setting "Configuration/System/
Blocking mode", which selects the blocking mode. The BLOCK input can be
controlled by a binary input, a horizontal communication input or an internal signal
of the IED program. The influence of the BLOCK signal activation is preselected
with the global setting Blocking mode.
The Blocking mode setting has three blocking methods. In the "Freeze timers"
mode, the operation timer is frozen to the prevailing value. In the "Block all"
mode, the whole function is blocked and the timers are reset. In the "Block
OPERATE output" mode, the function operates normally but the OPERATE,
OPR_A, OPR_B and OPR_C outputs are not activated.

Timer characteristics

PH3xPTOC supports both DT and IDMT characteristics. The timer characteristics
can be selected 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,
a programmable curve can be used if none of the standard curves are applicable.
The DT characteristic 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 following characteristics, which comply with the list in the IEC 61850-7-4
specification, indicate the characteristics supported by different stages:
Table 173: IDMT curves supported by different stages
Operating curve type
(1) ANSI Extremely Inverse
(2) ANSI Very Inverse
(3) ANSI Normal Inverse
(4) ANSI Moderately Inverse
(6) Long Time Extremely
Inverse
(7) Long Time Very Inverse
(8) Long Time Inverse
(9) IEC Normal Inverse
Table continues on next page
Protection functions
Supported by
PH3LPTOC
x
x
x
x
x
x
x
x
Section 4
PH3HPTOC
x
x
x
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