GE D60 Instruction Manual page 517

CHAPTER 5: SETTINGS CONTROL ELEMENTS
Figure 5-195: Illustration of the incipient fault detector algorithm
5
The following settings are available for each incipient cable fault detector.
— This setting enables and disables operation of the incipient fault detection element.
INCIPIENT FAULT 1 FUNCTION
— Blocks operation of the incipient cable fault detector element. Assertion of the FlexLogic operand
INCIPNT FLT 1 BLOCK
assigned to this setting blocks operation.
— Selects a current source for the incipient cable fault detector element. This source must be
INCIPIENT FAULT 1 SOURCE
assigned a valid CT bank.
— Specifies the pickup level of the overcurrent detector in per-unit values of the CT nominal
INCIPIENT FAULT 1 PICKUP
current.
— There are two modes of operation available for the incipient cable fault detector element. In the
INCIPNT FLT 1 MODE
"Number of counts" mode, a trip is initiated only after the selected number of faults is detected. In the "Counts per window"
mode, a trip is initiated only after the selected number of faults is detected within the time specified by the
INCIPNT FLT 1
setting.
DETECT WINDOW
— Selects the number of faults required to initiate a trip.
INCIPIENT FLT 1 TRIP COUNTS NUMBER
— Specifies a time window for "Counts per window" mode of operation.
INCIPNT FLT 1 DETECT WINDOW
— Specifies a reset time for the output after the trip is initiated.
INCIPIENT FAULT 1 RESET DELAY
D60 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 5-339