GE G30 Instruction Manual page 431

CHAPTER 5: SETTINGS
The phase instantaneous overcurrent element can be used as an instantaneous element with no intentional delay or as a
definite time element. The input current is the fundamental phasor magnitude. For timing curves, see the publication
Instantaneous Overcurrent (IOC) Element Response to Saturated Waveforms in UR Series Relays (GET-8400A).
— This setting enables and disables the phase instantaneous overcurrent protection element.
FUNCTION
— Selects the signal source for the phase instantaneous overcurrent protection element.
SOURCE
— Specifies the phase instantaneous overcurrent pickup level in per-unit values.
PICKUP
—Delays the assertion of the
DELAY
and relays.
— Specifies a delay for the reset of the phase instantaneous overcurrent element between the operate output
RESET DELAY
state and the return to logic 0 after the input passes outside the defined pickup range. This setting is used to ensure that
the relay output contacts are closed long enough to ensure reception by downstream equipment.
— Assertion of the operand assigned to this setting block's phase A of the phase instantaneous overcurrent
BLOCK A
element.
— Enables and disables the logging of phase instantaneous overcurrent events in the sequence of events recorder.
EVENTS
5.7.4.5 Phase directional overcurrent (ANSI 67P, IEC PDOC/PTOC)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  PHASE CURRENT  PHASE DIRECTIONAL 1
 PHASE
 DIRECTIONAL 1
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
operands. It is used to achieve timing coordination with other elements
PHASE IOC OP
Figure 5-109: Phase instantaneous overcurrent 1 logic
PHASE DIR 1

FUNCTION: Disabled
PHASE DIR 1 SIGNAL

SOURCE: SRC 1
PHASE DIR 1 BLOCK:

Off
PHASE DIR 1

ECA: 30°
PHASE DIR POL V1

THRESHOLD: 0.700 pu
PHASE DIR 1 BLOCK

WHEN V MEM EXP: No
PHASE DIR 1

TARGET: Self-reset
GROUPED ELEMENTS
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: FlexLogic operand
Range: 0 to 359° in steps of 1
Range: 0.004 to 3.000 pu in steps of 0.001
Range: No, Yes
Range: Self-reset, Latched, Disabled
5
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