CONTROL ELEMENTS
5.8.12 Pilot schemes
5.8.12.1 Menu
SETTINGS CONTROL ELEMENTS PILOT SCHEMES
PILOT SCHEMES
This menu is for selection and configuration of protection signaling schemes. All schemes are available for single-pole
5
tripping applications and can be used with one, two, or four-bit communications channels. Choices of communications
channel include Remote Inputs/Outputs and telecommunications interfaces.
For more information, see the Application of Settings chapter.
5.8.12.2 Direct under-reaching transfer trip (DUTT)
SETTINGS CONTROL ELEMENTS PILOT SCHEMES DUTT SCHEME
DUTT SCHEME
5-376
DUTT SCHEME
PUTT SCHEME
POTT SCHEME
POTT1 SCHEME
HYBRID POTT SCHEME
BLOCKING SCHEME
BLOCKING1 SCHEME
DCUB SCHEME
DUTT SCHEME
FUNCTION: Disabled
DUTT SCHEME BLOCK:
Off
DUTT SEAL-IN
DELAY: 0.010 s
DUTT NO OF COMM
BITS: 1
DUTT RX1:
Off
DUTT RX2:
Off
DUTT RX3:
Off
DUTT RX4:
Off
DUTT SCHEME TARGET:
Self-Reset
DUTT SCHEME EVENT:
Disabled
See below
See page 5-378
See page 5-380
See page 5-383
See page 5-384
See page 5-388
See page 5-392
See page 5-393
Range: Disabled, Enabled
Range: FlexLogic operand
Range: 0.000 to 65.535 s in steps of 0.001
Range: 1, 2, or 4
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: Self-Reset, Latched, Disabled
Range: Disabled, Enabled
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS