GE B30 UR Series Instruction Manual page 294

5.7 CONTROL ELEMENTS
• 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
5
IA
IB
IC
SETTINGS
BRK 1 FLSHOVR SIDE 2
SRC:
SRC 1 SRC 2 SRC 6
, , ... , , none
Va
Δ VA =
Vb
Vc
c) CT TROUBLE ZONE

PATH: SETTINGS CONTROL ELEMENTS
 CT TROUBLE ZONE 1

This element uses the differential current calculated in accordance with the bus configuration programmed under Bus Zone
1. Operation of this element is therefore completely dependent on the dynamic bus replica, which must be defined first. The
bus differential zones are defined using the path
CT problems in any of the circuits actually connected to the differential zone defined as Bus Zone 1.
The
CT TROUBLE ZONE 1 PICKUP
ferential current in a given phase remains above this level for the time interval defined by the
setting, CT Trouble is declared for the given phase by setting the appropriate FlexLogic output operand.
5-172
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 5–76: BREAKER FLASHOVER SCHEME LOGIC

MONITORING ELEMENTS
CT TROUBLE ZONE 1
FUNCTION: Disabled
CT TROUBLE ZONE 1
MESSAGE
PICKUP: 0.100 pu
CT TROUBLE ZONE 1
MESSAGE
DELAY: 10.0 s
CT TROUBLE ZONE 1
MESSAGE
TARGET: Self-reset
CT TROUBLE ZONE 1
MESSAGE
EVENTS: Disabled
SETTINGS
setting specifies the differential current level that defines an abnormal bus state. If the dif-
B30 Bus Differential System
6 cycle
AND
SET
5 cycle
dominant
Phase B logic
RESET
0 OR
SET
dominant
RESET
OR
AND

CT TROUBLE ZONE 1(2)
Range: Disabled, Enabled, Alarm
Range: 0.020 to 2.000 pu in steps of 0.001
Range: 1.0 to 60.0 s in steps of 0.1
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
 
SYSTEM SETUP BUS
5 SETTINGS
FLEXLOGIC OPERANDS
FLEXLOGIC OPERANDS
BRK 1 FLSHOVR PKP A
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
. The CT Trouble element 1 detects
CT TROUBLE ZONE 1 DELAY
GE Multilin
842018A2.CDR