GE L90 Instruction Manual page 50

SPECIFICATIONS
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
WATTMETRIC ZERO-SEQUENCE DIRECTIONAL
2
Measured power:
Number of elements:
Characteristic angle:
Minimum power:
Pickup level accuracy:
Hysteresis:
Pickup delay:
Inverse time multiplier:
Curve timing accuracy:
Operate time:
SENSITIVE DIRECTIONAL POWER
Measured power:
Number of stages:
Characteristic angle:
Calibration angle:
Minimum power:
Pickup level accuracy:
Hysteresis:
Pickup delay:
Timer accuracy:
Operate time:
PHASE UNDERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Curve timing accuracy at <0.90 x pickup:
Operate time:
AUXILIARY UNDERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Curve timing accuracy at <0.90 x pickup:
Operate time:
PHASE OVERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
2-36
40 to 90° in steps of 1, independent for forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.015 to 30.000 pu in steps of 0.01
97 to 98%
<16 ms at 3 × pickup at 60 Hz
zero-sequence
2
0 to 360° in steps of 1
0.001 to 1.200 pu in steps of 0.001
±1% or ±0.0025 pu, whichever is greater
3% or 0.001 pu, whichever is greater
definite time (0 to 600.00 s in steps of 0.01), inverse time, or FlexCurve
0.01 to 2.00 s in steps of 0.01
±3.5% of operate time or ±1 cycle (whichever is greater) from pickup to operate
<30 ms at 60 Hz
3-phase, true RMS
2
0 to 359° in steps of 1
0.00 to 0.95° in steps of 0.05
–1.200 to 1.200 pu in steps of 0.001
±1% or ±0.001 pu, whichever is greater
2% or 0.001 pu, whichever is greater
0 to 600.00 s in steps of 0.01
±3% of operate time or ±1/4 cycle (whichever is greater)
<50 ms
Phasor only
0.004 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse;
Definite Time (0.1s base curve)
Time dial = 0.00 to 600.00 in steps of 0.01
±3.5% of operate time or ±1/2 cycle (whichever is greater) from pickup to operate
<30 ms at 0.9 pickup at 60 Hz for Definite Time mode
0.004 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse, Definite Time
Time Dial = 0 to 600.00 in steps of 0.01
±3.5% of operate time or ±1/2 cycle (whichever is greater) from pickup to operate
<30 ms at 0.9 pickup at 60 Hz for Definite Time mode
Phasor only
0.004 to 3.000 pu in steps of 0.001
97 to 98% of pickup
±0.5% of reading from 10 to 208 V
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION