GE 869 Instruction Manual page 22

SPECIFICATIONS
1–12
CURRENT UNBALANCE (46)
Unbalance: ............................................................ Unbal = (I
Trip/Alarm Pickup Level:.................................. 4.0 to 50.0% in steps of 0.1%
Trip Operating Curves: ..................................... Definite Time: T=TDM sec
Trip Pickup Delay:............................................... 0.00 to 180.00 s in steps of 0.01 s when Trip Curve = Definite
Trip Time Dial Multiplier (TDM):..................... 0.00 to 180.00 in steps of 0.01 when Trip Curve = Inverse
Trip Maximum Time: ......................................... 0.00 to 1000.00 s in steps of 0.01 s
Trip Minimum Time:........................................... 0.00 to 1000.00 s in steps of 0.01 s
Trip Reset Time:................................................... 0.00 to 1000.00 s in steps of 0.01 s
Alarm Time Delay:.............................................. 0.00 to 180.00 s in steps of 0.01 s
Single Phasing Pickup Level: ......................... unbalance level > 40% or when I
Single Phasing Time Delay: ........................... 2 seconds
Pickup Accuracy: ................................................ ±2%
Operate Time: ...................................................... <2 cycles at 1.10 x pickup (NOTE 1)
Timing Accuracy:................................................ ±3% of delay setting time or ± 20 ms, whichever is greater
Element: .................................................................. Trip and Alarm
Single Phasing Element: .................................. Trip
DIRECTIONAL POWER (32)
Measured Power:................................................ 3-phase
Number of Stages: ............................................. 2
Characteristic Angle:......................................... 0º to 359º in steps of 1°
Calibration Angle: ............................................... 0.00º to 0.95º in steps of 0.05°
Power Pickup Range: ........................................ –1.200 to 1.200 x Rated Power in steps of 0.001
Pickup Level Accuracy: .................................... ± 1% or ± 0.001 x Rated Power, whichever is greater
Hysteresis: ............................................................. 2% or 0.001 x Rated Power, whichever is greater
Pickup Time Delay: ............................................ 0.000 to 6000.000 s in steps of 0.001 s
Operate Time: ...................................................... < 55 ms at 1.1 x pickup at 60 Hz
Timer Accuracy:.................................................. ± 3% of delay setting or ± ¼ cycle (whichever is greater)
FLEXELEMENTS
Number of elements: ........................................ 8
Operating signal: ................................................ Any analog actual value, or two values in a differential mode
Operating signal mode: ................................... Signed, or Absolute value
Operating mode:................................................. Level, Delta
Comparison direction:...................................... Over, Under
Pickup Level: ......................................................... -30.000 to 30.000 pu in steps of 0.001 pu
Hysteresis: ............................................................. 0.1 to 50.0% in steps of 0.1%
Delta dt:................................................................... 40 msec to 45 days
Pickup and dropout delays:........................... 0.000 to 6000.000 s in steps of 0.001 s
/ I ) x A x 100%
2 1 factor
A = (I / FLA) if l < FLA
factor avg avg
A = 1 if l >= FLA
factor avg
Inverse Time: T= (TDM/[Unbal]
Time
Curve
in any phase is less than the cutoff current
< 65 ms at 1.1 x pickup at 50 Hz (NOTE 1)
from pickup to operate
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
2
) sec
>=25%FLA and current
avg