GE 339

1–14 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
CLOCK
Setup: .......................................................................Date and time
Daylight Saving Time
IRIG-B: ......................................................................Auto-detect (DC shift or Amplitude Modulated)
Amplitude modulated: 1 to 10 V pk-pk
DC shift: 1 to 10 V DC
Input impedance: 40 kOhm ± 10%
Accuracy with IRIG-B:....................................... ± 1 ms
Accuracy without IRIG-B:................................± 1 min / month
Control
LOGIC ELEMENTS
Number of logic elements:.............................16
Trigger source inputs per element:............2 to 8
Block inputs per element: ...............................2 to 4
Supported operations: .....................................AND, OR, NOR, NAND, XOR, XNOR, Pickup / Dropout timers
Pickup timer: .........................................................0 to 60000 ms in steps of 1 ms
Dropout timer:...................................................... 0 to 60000 ms in steps of 1 ms
BREAKER CONTROL
Operation: .............................................................. Asserted Contact Input, Logic Element, Virtual Input, Manual
Command, Remote Input
Function:................................................................. Opens/closes the motor breaker
START INHIBIT
Thermal Start Inhibit: ........................................ Thermal Inhibit Margin: 0 to 25 % in steps of 1%
Starts per Hour Inhibit:.....................................Maximum: 1 to 5 starts in steps of 1
Time Between Starts Inhibit: .........................Time Between Starts: 1 to 3600 s in steps of 1 s
Restart Inhibit:......................................................Restart Inhibit Delay: 1 to 50000 s in steps of 1 s
BREAKER FAILURE/WELDED CONTACTOR (50BF)
Current Supervision:..........................................Phase Current
Current Supervision Pickup:...........................0.05 to 20.00 x CT in steps of 0.01 x CT
Time Delay 1:........................................................0.03 to 1.00 s in steps of 0.01 s
Time Delay 2:........................................................0.00 to 1.00 s in steps of 0.01 s
Current Supervision Dropout: ....................... 97 to 98% of pickup
Current Supervision Accuracy: .................... per CT input
Timing Accuracy:................................................0 to 1 cycle (Timer 1, Timer 2)
Reset Time:............................................................<14 ms typical at 2 x pickup at 60 Hz
<16 ms typical at 2 x pickup at 50 Hz
CT FAILURE
Inputs: ......................................................................Neutral Current IN,
Neutral Current VN (from three-phase VTs)
Ground Current Ig
Time Delay: ...........................................................0.00 to 60.00 s in steps of 0.01 s
3IO level accuracy: ............................................ per CT inputs
3VO level accuracy:...........................................per VT inputs
GND current level accuracy:......................... see the specifications for phase and ground current inputs
Operate Time: ...................................................... 30 ms at 60 Hz
35 ms at 50 Hz
BREAKER TRIP COUNTER
Trip Counter Limit (Pickup):.............................1 to 10000 in steps of 1
EMERGENCY RESTART
Function:................................................................. Defeats all motor start inhibit features, resets all trips and
alarms, and discharges the thermal capacity to zero so that
a hot motor can be restarted in the event of an emergency
Operation: .............................................................. Contact Input 1 to 10, Virtual Input 1 to 32, Logic Element 1
to 16, Remote Input 1 to 32