GE T60 Instruction Manual page 419

5 SETTINGS
• BRK 1 FLSHOVR SPV A to BRK 1 FLSHOVR SPV C: These settings specify FlexLogic operands (per breaker pole)
that supervise the operation of the element per phase. Supervision can be provided by operation of other protection
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
SETTINGS
BRK 1 FLSHOVR SIDE 2
SRC:
SRC 1 SRC 2 SRC 6
, , ... , , none
Va
Δ VA = | VA - Va |
Vb
Vc
GE Multilin
SETTINGS
BRK 1 FLSHOVR SUPV A:
0
FlexLogic operand: Off=0
6 cycle
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
5 cycle
Va > PKP
SETTINGS
5 cycle
BRK 1 STATUS CLSD A:
0
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
Figure 5–149: BREAKER FLASHOVER SCHEME LOGIC
T60 Transformer Protection System
FLEXLOGIC OPERANDS
BRK 1 FLSHOVR PKP A
BRK 1 FLSHOVR PKP B
BRK 1 FLSHOVR PKP C
FLEXLOGIC OPERANDS
BRK 1 FLSHOVR DPO A
BRK 1 FLSHOVR DPO B
AND
BRK 1 FLSHOVR DPO C
SET
dominant
Phase C logic
Phase B logic
RESET
OR
SET SETTING
dominant
BRK 1 FLSHOVR PKP
DELAY:
t
PKP
Phase B logic
RESET
OR Phase C logic
AND
5.7 CONTROL ELEMENTS
FLEXLOGIC OPERANDS
OR BRK 1 FLSHOVR PKP
BRK 1 FLSHOVR DPO
FLEXLOGIC OPERANDS
0 BRK 1 FLSHOVR OP A
FLEXLOGIC OPERAND
BRK 1 FLSHOVR OP B OR BRK 1 FLSHOVR OP
BRK 1 FLSHOVR OP C
842018A2.CDR
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