CHAPTER 5: SETTINGS FLEXLOGIC
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-143
5
ELEMENT:
Instantaneous
overcurrent
IOC 1 PKP
IOC 1 DPO
IOC 1 OP
Instantaneous overcurrent 1 element has picked up
Instantaneous overcurrent 1 element has dropped out
Instantaneous overcurrent 1 element has operated
IOC 2 to 24 Same set of operands as shown for IOC 1
ELEMENT:
Isolator monitoring
ISOLATOR 1 POSITION
ISOLATOR 1 ALARM
ISOLATOR 1 BLOCK
Position of isolator 1 (ON = closed; OFF = open)
Contact discrepancy detected for isolator 1
Blocking signal for substation switching operations set due to contact
discrepancy of isolator 1 (acknowledgeable)
ISOLATOR 2 to 48 Same set of operands as shown for ISOLATOR 1
ELEMENT:
Non-volatile latches
LATCH 1 ON
LATCH 1 OFF
Non-volatile latch 1 is ON (Logic = 1)
Non-volatile latch 1 is OFF (Logic = 0)
LATCH 2 to 16 Same set of operands as shown for LATCH 1
ELEMENT:
Setting group
SETTING GROUP ACT 1
SETTING GROUP ACT 2
SETTING GROUP ACT 3
SETTING GROUP ACT 4
SETTING GROUP ACT 5
SETTING GROUP ACT 6
Setting group 1 is active
Setting group 2 is active
Setting group 3 is active
Setting group 4 is active
Setting group 5 is active
Setting group 6 is active
ELEMENT:
Time overcurrent
TOC 1 PKP
TOC 1 DPO
TOC 1 OP
The time overcurrent 1 element has picked up
The time overcurrent 1 element has dropped out
The time overcurrent 1 element has operated
TOC 2 to 24 Same set of operands as shown for TOC 1
ELEMENT:
Trip bus
TRIP BUS 1 PKP
TRIP BUS 1 OP
Asserted when the trip bus 1 element picks up
Asserted when the trip bus 1 element operates
TRIP BUS 2 to 6 Same set of operands as shown for TRIP BUS 1
ELEMENT:
Undervoltage
UNDERVOLTAGE 1 PKP
UNDERVOLTAGE 1 DPO
UNDERVOLTAGE 1 OP
The undervoltage 1 element has picked up
The undervoltage 1 element has dropped out
The undervoltage 1 element has operated
UNDERVOLTAGE 2 to 12 Same set of operands as shown for UNDERVOLTAGE 1
FIXED OPERANDS Off Logic = 0. Does nothing and can be used as a delimiter in an equation list;
used as ‘Disable’ by other features.
On Logic = 1. Can be used as a test setting.
INPUTS/OUTPUTS:
Contact inputs
Cont Ip 1 On
Cont Ip 2 On
↓
Cont Ip 1 Off
Cont Ip 2 Off
↓
Cont Ip 120 On
Cont Ip 120 Off
(does not appear unless ordered)
(does not appear unless ordered)
↓
(does not appear unless ordered)
(does not appear unless ordered)
↓
(does not appear unless ordered)
(does not appear unless ordered)
INPUTS/OUTPUTS:
Contact outputs,
current
(from detector on
form-A output only)
Cont Op 1 IOn
Cont Op 2 IOn
↓
Cont Op 72 IOn
(does not appear unless ordered)
(does not appear unless ordered)
↓
(does not appear unless ordered)
INPUTS/OUTPUTS:
Contact outputs,
voltage
(from detector on
form-A output only)
Cont Op 1 VOn
Cont Op 2 VOn
↓
Cont Op 72 VOn
(does not appear unless ordered)
(does not appear unless ordered)
↓
(does not appear unless ordered)
Cont Op 1 VOff
Cont Op 2 VOff
↓
Cont Op 72 VOff
(does not appear unless ordered)
(does not appear unless ordered)
↓
(does not appear unless ordered)
INPUTS/OUTPUTS:
Direct inputs
DIRECT INPUT 1 On
↓
DIRECT INPUT 256 On
Flag is set, logic=1
↓
Flag is set, logic=1
Operand type Operand syntax Operand description
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