GE G60 Instruction Manual page 36

SPECIFICATIONS
Operating current:
Level sensing:
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
2
Dropout level:
Operation time:
NEGATIVE SEQUENCE DIRECTIONAL OC
Directionality:
Polarizing:
Polarizing voltage:
Operating current:
Level sensing:
Zero-sequence:
Negative-sequence:
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
GENERATOR UNBALANCE
Gen. nominal current:
Stages:
Pickup level:
Dropout level:
Level accuracy:
0.1 to 2 x CT rating:
> 2.0 x CT rating:
Time dial (K-value):
Pickup delay:
Reset delay:
Timer accuracy:
Operate time:
SPLIT PHASE PROTECTION
Operating quantity:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Timer accuracy:
Operate time:
SENSITIVE DIRECTIONAL POWER
Measured power:
Number of stages:
Characteristic angle:
Calibration angle:
Minimum power:
2-22
I_0
3 × (|I_0| – K × |I_1|), IG
0.000 to 0.500 in steps of 0.001
–90 to 90° in steps of 1
40 to 90° in steps of 1, independent for forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.002 to 30.000 pu in steps of 0.01
97 to 98%
<16 ms at 3 × pickup at 60 Hz
Co-existing forward and reverse
Voltage
V_2
I_2
|I_0| – K × |I_1|
|I_2| – K × |I_1|
0.000 to 0.500 in steps of 0.001
0 to 90° in steps of 1
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
0.000 to 1.250 pu in steps of 0.001
2
2 (I t with linear reset and definite time)
0.00 to 100.00% in steps of 0.01
97 to 98% of pickup
±0.5% of reading or 1% of rated (whichever is greater)
±1.5% of reading
0.00 to 100.00 in steps of 0.01
0.0 to 1000.0 s in steps of 0.1
0.0 to 1000.0 s in steps of 0.1
±3% of operate time or ±20 ms, whichever is greater
<50 ms at 60 Hz
split phase CT current biased by generator load current
0.020 to 1.500 pu in steps of 0.001
97 to 98% of pickup
±0.5% of reading or ±1% of rated
0.000 to 65.535 s in steps of 0.001
±3% of operate time or ±5 cycles, whichever is greater
<5 cycles at 1.10 × pickup 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
CHAPTER 2: PRODUCT DESCRIPTION
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL