GE UR Series L90 Instruction Manual page 418

5.7 CONTROL ELEMENTS
elements, breaker failure, and close and trip commands. A six-cycle time delay applies after the selected FlexLogic
operand resets.
• BRK FLSHOVR PKP DELAY: This setting specifies the time delay to operate after a pickup condition is detected.
SETTING
BREAKER FLASHOVER
FUNCTION:
Enable=1
AND
Block: OFF=0
SETTINGS
BRK 1 FLSHOVR SIDE 1
SRC:
SRC 1, SRC 2, ... , SRC 6
VA
VB
VC
IA
IB
IC
5
SETTINGS
BRK 1 FLSHOVR SIDE 2
SRC:
SRC 1 SRC 2 SRC 6
, , ... , , none
Va
Δ VA =
Vb
Vc
5-280
SETTINGS
BRK 1 FLSHOVR SUPV A:
0
FlexLogic operand: Off=0
Phase B
BRK 1 FLSHOVR SUPV B:
logic
FlexLogic operand: Off=0
Phase C
BRK 1 FLSHOVR SUPV C:
logic
FlexLogic operand: Off=0
SETTING
BRK 1 FLSHOVR V PKP:
RUN
VA > PKP
0
OR
Va > PKP
SETTINGS
5 cycle
BRK 1 STATUS CLSD A:
RUN
FlexLogic operand: On=1
BRK 1 STATUS CLSD B:
Phase B
logic
RUN
FlexLogic operand: On=1
BRK 1 STATUS CLSD C:
Phase C
logic
RUN
FlexLogic operand: On=1
SETTING
BRK 1 FLSHOVR AMP PKP:
RUN
IA > PKP
SETTING
BRK 1 FLSHOVR DIFF V
PKP:
RUN
ΔVA > PKP
| VA - Va |
Figure 5–149: BREAKER FLASHOVER SCHEME LOGIC
L90 Line Current Differential System
6 cycle
AND
SET
5 cycle
dominant
Phase B logic
RESET
0 OR
SET
dominant
RESET
OR
AND
5 SETTINGS
FLEXLOGIC OPERANDS
BRK 1 FLSHOVR PKP A FLEXLOGIC OPERANDS
BRK 1 FLSHOVR PKP B OR BRK 1 FLSHOVR PKP
BRK 1 FLSHOVR PKP C BRK 1 FLSHOVR DPO
FLEXLOGIC OPERANDS
BRK 1 FLSHOVR DPO A
BRK 1 FLSHOVR DPO B
BRK 1 FLSHOVR DPO C
Phase C logic
SETTING
BRK 1 FLSHOVR PKP
DELAY:
FLEXLOGIC OPERANDS
t
PKP
0 BRK 1 FLSHOVR OP A
FLEXLOGIC OPERAND
Phase B logic BRK 1 FLSHOVR OP B OR BRK 1 FLSHOVR OP
Phase C logic BRK 1 FLSHOVR OP C
GE Multilin
842018A2.CDR