CHAPTER 5: SETTINGS GROUPED ELEMENTST60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 5-2535The phase instantaneous overcurrent element can be used as an instantaneous element with no intentional delay or as adefinite time element. The input current is the fundamental phasor magnitude. For timing curves, see the publicationInstantaneous Overcurrent (IOC) Element Response to Saturated Waveforms in UR Series Relays (GET-8400A).FUNCTION — This setting enables and disables the phase instantaneous overcurrent protection element.SOURCE — Selects the signal source for the phase instantaneous overcurrent protection element.PICKUP — Specifies the phase instantaneous overcurrent pickup level in per-unit values.DELAY —Delays the assertion of the PHASE IOC OP operands. It is used to achieve timing coordination with other elementsand relays.RESET DELAY — Specifies a delay for the reset of the phase instantaneous overcurrent element between the operate outputstate and the return to logic 0 after the input passes outside the defined pickup range. This setting is used to ensure thatthe relay output contacts are closed long enough to ensure reception by downstream equipment.BLOCK A — Assertion of the operand assigned to this setting block’s phase A of the phase instantaneous overcurrentelement.EVENTS — Enables and disables the logging of phase instantaneous overcurrent events in the sequence of events recorder.Figure 5-141: Phase instantaneous overcurrent 1 logic5.7.7.5 Phase directional overcurrent (ANSI 67P, IEC PVCB/PTOC)SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) PHASE CURRENT PHASE DIRECTIONAL 1(3) PHASE DIRECTIONAL 1 PHASE DIR 1FUNCTION: DisabledRange: Disabled, Enabled PHASE DIR 1 SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6 PHASE DIR 1 BLOCK:OffRange: FlexLogic operand PHASE DIR 1ECA: 30°Range: 0 to 359° in steps of 1 PHASE DIR POL V1THRESHOLD: 0.700 puRange: 0.004 to 3.000 pu in steps of 0.001 PHASE DIR 1 BLOCKWHEN V MEM EXP: NoRange: No, Yes PHASE DIR 1TARGET: Self-resetRange: Self-reset, Latched, Disabled
