GE 869 Instruction Manual page 32

SPECIFICATIONS
1–22
ESA (ELECTRICAL SIGNATURE ANALYSIS)
ESA (Bearing & Mechanical (Foundation looseness, Eccentricity and Mis-alignment)) Fault
Computing Parameter: .................................... Ia or Ib or Ic
Indicating Parameter:....................................... Peak Magnitude (dB), Energy (dB), Change in dB
Operating Parameter: ...................................... Change in Peak and Energy magnitude (dB) or Peak and
Pickup level 1 & 2:............................................... Change in Peak and Energy magnitude > 'X' dB w.r.t base line
Pickup delay 1 & 2: ............................................ 5 to 60 min (multiples of 5 min) (Configurable in setup
FAULT REPORTS
Number of Reports: ........................................... 15
Captured Data: .................................................... Pre-fault and fault phasors for all CT and VT banks, pre-fault
HARMONIC DETECTION
Operating Parameter: ...................................... Current 2
Timer Accuracy:.................................................. Harmonics: ±3% of delay setting or ±1/4 cycle (whichever is
POWER FACTOR (55)
Switch-In Level:.................................................... 0.01 Lead to 1 to 0.01 Lag in steps of 0.01
Dropout Level:...................................................... 0.01 Lead to 1 to 0.01 Lag in steps of 0.01
Delay: ....................................................................... 0.000 to 6000.000 s in steps of 0.001 s
Minimum Operating Voltage:........................ 0.00 to 1.25 x VT in steps of 0.01 x VT
Level Accuracy: ................................................... ± 0.02
Timer Accuracy:.................................................. ± 3% of delay setting or ± 1¼ cycle (whichever is greater)
SPEED PROTECTION
Configuration: ...................................................... Assign to any contact input
Operating Range: ............................................... 50 to 120% of Rated RPM
Minimum Pulse Width: ..................................... >8% of a revolution
Level Accuracy: ................................................... ±1% of rated speed
Timer Accuracy:.................................................. ±3% of delay setting or ±2 power cycles (whichever is
Element: .................................................................. Trip and Alarm
STATOR TURN FAULT
Operating Parameter: ...................................... I_2, V_1, V_2
Pickup Level Stage1/Stage2: ......................... 0.001 to 10.000 in steps of 0.001
Level Accuracy: ................................................... For 1.0 to 2.0 x CT: ±0.5% of reading or ±0.4% of rated,
Dropout Level:...................................................... 97 to 98% of Pickup
Pickup Delay Stage1/Stage2:........................ 0.01 to 600.00 in steps of 0.01
Operate Time: ...................................................... <16 ms at 3 x pickup at 60 Hz
Timer Accuracy:.................................................. ±3% of operate time or ± 1/4 cycle (whichever is greater)
TRIP CIRCUIT MONITOR (TCM)
Applicable Voltage: ............................................ 20 to 250 VDC
Trickle Current:.....................................................1 to 2.5 mA
Timing Accuracy:................................................ ± 3 % or ± 4 ms, whichever is greater
Energy magnitude (dB)
dB (configurable in setup SW) or Peak and Energy magnitude
> 'X' dB w.r.t base line dB (configurable in setup SW)
software)
and fault trigger operands, user-programmable analog
channels 1 to 32
nd rd th th
, 3 , 4 , 5 harmonic or THD per phase
greater) from pickup to operate
THD: ±3% of delay setting or ±3 cycles (whichever is greater)
from pickup to operate
from pickup to operate
greater) from pickup to operate
whichever is greater For > 2.0 x CT: ±1.5% of reading
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION