CHAPTER 5: SETTINGS GROUPED ELEMENTS
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 5-245
5
GROUND TOC1 RESET — The “Instantaneous” reset method is intended for applications with other relays, such as most static
relays, which set the energy capacity directly to zero when the current falls below the reset threshold. The “Timed” reset
method can be used where the relay must coordinate with electromechanical relays.
GROUND TOC1 BLOCK — Assertion of the operand assigned to this setting blocks operation of the ground time overcurrent
element.
GROUND TOC1 EVENTS — This setting enables and disables the logging of ground time overcurrent events in the sequence
of events recorder.
Figure 5-135: Ground TOC1 logic
5.7.10.3 Ground instantaneous overcurrent (ANSI 50G, IEC PIOC)
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) GROUND CURRENT GROUND IOC1(2)
These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion
range of a standard channel is from 0.02 to 46 times the CT rating.
This channel can be also equipped with a sensitive input. The conversion range of a sensitive channel is from 0.002
to 4.6 times the CT rating.
GROUND IOC1
GROUND IOC1
FUNCTION: Disabled
Range: Disabled, Enabled
GROUND IOC1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2
GROUND IOC1
PICKUP: 1.000 pu
Range: 0.020 to 30.000 pu in steps of 0.001
GROUND IOC1 PICKUP
DELAY: 0.00 s
Range: 0.00 to 600.00 s in steps of 0.01
GROUND IOC1 RESET
DELAY: 0.00 s
Range: 0.00 to 600.00 s in steps of 0.01
GROUND IOC1 BLOCK:
Off
Range: FlexLogic operand
GROUND IOC1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
GROUND IOC1
EVENTS: Disabled
Range: Disabled, Enabled
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