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CHAPTER 6: SETPOINTS
S3 Protection
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
339 protection functions include:
•
Thermal Protection
•
Short Circuit
•
Ground Fault
•
Mechanical Jam
•
Undercurrent
•
Current Unbalance
•
Load Increase
•
Neutral IOC
•
RTD Protection
•
Phase Undervoltage
•
Phase Overvoltage
•
Overfrequency
•
Underfrequency
•
Underpower
•
Voltage Phase Reversal
•
VT Fuse Fail
•
Negative Sequence Overvoltage
S3 PROTECTION
6–55
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