4–22 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
A4 TARGET MESSAGES CHAPTER 4: ACTUAL VALUES
Phase Short Circuit Settings:
• SHORT CIRCUIT FUNCTION = Latched Alarm
• SHORT CIRCUIT PICKUP = 1.00 x CT
• SHORT CIRCUIT DELAY = 0.20 s
When current greater than the Short Circuit pickup level is applied, the 339 display shows
the following target message:
A4 TARGET MESSAGES
Ph Short Circuit Alarm
STATE: PKP
After the 200 ms time delay expires, the display shows the following message only:
A4 TARGET MESSAGES
Ph Short Circuit Alarm
STATE: OP
Example 3:
Phase Short Circuit Settings:
•SHORT CIRCUIT FUNCTION = Alarm
• SHORT CIRCUIT PICKUP = 1.00 x CT
• SHORT CIRCUIT DELAY = 0.20 s
When current greater than the Short Circuit pickup level is applied, the 339 display shows
the following target message:
A4 TARGET MESSAGES
Ph Short Circuit Alarm
STATE: PKP
After the 200 ms time delay expires, the display shows the following message only:
A4 TARGET MESSAGES
Ph Short Circuit Alarm
STATE: OP
NOTE:
Once the condition clears, the target message will disappear.