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CHAPTER 1: INTRODUCTION
Specifications
NOTE:
NOTE
Password security
Protection
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Specifications are subject to change without notice.
PASSWORD SECURITY
Master Reset Password: ..................................8 to 10 alpha-numeric characters
Settings Password:.............................................3 to 10 alpha-numeric characters for local and remote
Control Password:...............................................3 to 10 alpha-numeric characters for local and remote
NEUTRAL INSTANTANEOUS OVERCURRENT
Pickup Level:..........................................................0.05 to 20 x CT in steps of 0.01 x CT
Dropout Level: ......................................................96 to 99% of Pickup @ I > 1 x CT
Time Delay: ............................................................0.00 to 300.00 sec in steps of 0.01
Operate Time:.......................................................<30 ms @ 60Hz (I > 2.0 x PKP), 0 ms time delay
Timer Accuracy:...................................................0 to 1 cycle
Level Accuracy:....................................................per CT input
Elements: ................................................................Trip or Alarm
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality:........................................................Co-existing forward and reverse
Polarizing: ...............................................................Voltage, Current, Dual
Polarizing Voltage:..............................................-V
Polarizing Current: ..............................................I
MTA:...........................................................................From 0
Angle Accuracy:...................................................±2
Operation Delay: .................................................20 to 30 ms
UNDERCURRENT
Pickup Level:..........................................................0.1 to 0.95 x FLA in steps of 0.01 x FLA
Dropout Level: ......................................................101 to 104% of Pickup
Time Delay: ............................................................1.00 to 60.00 s in steps of 0.01 s
Block from Start:..................................................0 to 600 s in steps of 1 s
Pickup Accuracy:.................................................as per phase current inputs
Timing Accuracy: ................................................±0.5 s or ± 0.5% of total time
Elements: ................................................................Trip and Alarm
access
access
Pickup - 0.02 x CT @ I <1 x CT
<35 ms @ 50Hz (I > 2.0 x PKP), 0 ms time delay
Voltage can be:
- Calculated from VT phases (VTs must be connected in
"Wye")
- Measured by Vaux input (3V
delta connection)
0
G
o
o
o
to 359
in steps of 1
o
SPECIFICATIONS
provided by an external open
0
1–7
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