Pilot Schemes - GE L90 Instruction Manual

CHAPTER 5: SETTINGS

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
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

L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
 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 5-357
See page 5-359
See page 5-362
See page 5-363
See page 5-367
See page 5-371
See page 5-373
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
CONTROL ELEMENTS
5
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