CHAPTER 4: ACTUAL VALUES
A4 TARGET MESSAGES
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
4–37
Examples of how the messages appear on the display:
Example 1
:
Phase IOC1 Settings:
•
PH IOC1 FUNCTION = Trip
•
PH IOC1 PICKUP = 1.00 x CT
•
PH IOC1 DELAY = 0.20 s
When current greater than the IOC1 pickup level is applied, the 345 display shows the
following target message:
A4 TARGET MESSAGES
Ph IOC1 Trip
STATE: PKP
After the 200 ms time delay expires, the display shows the following message only:
A4 TARGET MESSAGES
Ph IOC1 Trip
STATE: OP
Example 2
:
Phase IOC1 Settings:
•
PH IOC1 FUNCTION = Latched Alarm
•
PH IOC1 PICKUP = 1.00 x CT
•
PH IOC1 DELAY = 0.20 s
When current greater than the IOC1 pickup level is applied, the 345 display shows the
following target message:
A4 TARGET MESSAGES
Ph IOC1 Alarm
STATE: PKP
After the 200 ms time delay expires, the display shows the following message only:
A4 TARGET MESSAGES
Ph IOC1 Alarm
STATE: OP
Example 3
:
Phase IOC1 Settings:
•
PH IOC1 FUNCTION = Alarm
•
PH IOC1 PICKUP = 1.00 x CT
•
PH IOC1 DELAY = 0.20 s
When current greater than the IOC1 pickup level is applied, the 345 display shows the
following target message:
A4 TARGET MESSAGES
Ph IOC1 Alarm
STATE: PKP
After the 200 ms time delay expires, the display shows the following message only:
A4 TARGET MESSAGES
Ph IOC1 Alarm
STATE: OP
NOTE
NOTE:
Once the condition clears, the target message will disappear.
