2-16
G60 Generator Protection System
GE Multilin
2.2 SPECIFICATIONS
2 PRODUCT DESCRIPTION
2
PHASE/NEUTRAL/GROUND IOC
Pickup level:
0.000 to 30.000 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2.0
×
CT rating: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
> 2.0
×
CT rating
±1.5% of reading
Overreach:
<2%
Pickup delay:
0.00 to 600.00 s in steps of 0.01
Reset delay:
0.00 to 600.00 s in steps of 0.01
Operate time:
<16 ms at 3
×
pickup at 60 Hz
(Phase/Ground IOC)
<20 ms at 3
×
pickup at 60 Hz
(Neutral IOC)
Timer accuracy:
±3% of operate time or ±1/4 cycle
(whichever is greater)
PHASE DIRECTIONAL OVERCURRENT
Relay connection:
90
°
(quadrature)
Quadrature voltage:
ABC phase seq.: phase A (V
BC
), phase
B (V
CA
), phase C (V
AB
); ACB phase
seq.: phase A (V
CB
), phase B (V
AC
),
phase C (V
BA
)
Polarizing voltage threshold: 0.000 to 3.000 pu in steps of 0.001
Current sensitivity threshold: 0.05 pu
Characteristic angle:
0 to 359
°
in steps of 1
Angle accuracy:
±2°
Operation time (FlexLogic operands):
Tripping (reverse load, forward fault):
<
12 ms, typically
Blocking (forward load, reverse fault):
<
8 ms, typically
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality:
Co-existing forward and reverse
Polarizing:
Voltage, Current, Dual, Dual-V, Dual-I
Polarizing voltage:
V_0 or VX
Polarizing current:
IG
Operating current:
I_0
Level sensing:
3
×
(|I_0| –
K
×
|I_1|), IG
Restraint,
K
:
0.000 to 0.500 in steps of 0.001
Characteristic angle:
–90 to 90° in steps of 1
Limit angle:
40 to 90° in steps of 1, independent for
forward and reverse
Angle accuracy:
±2°
Offset impedance:
0.00 to 250.00
Ω
in steps of 0.01
Pickup level:
0.002 to 30.000 pu in steps of 0.01
Dropout level:
97 to 98%
Operation time:
<16 ms at 3
×
pickup at 60 Hz
NEGATIVE SEQUENCE DIRECTIONAL OC
Directionality:
Co-existing forward and reverse
Polarizing:
Voltage
Polarizing voltage:
V_2
Operating current:
I_2
Level sensing:
Zero-sequence:|I_0| –
K
×
|I_1|
Negative-sequence:|I_2| –
K
×
|I_1|
Restraint,
K
:
0.000 to 0.500 in steps of 0.001
Characteristic angle:
0 to 90° in steps of 1
Limit angle:
40 to 90° in steps of 1, independent for
forward and reverse
Angle accuracy:
±2°
Offset impedance:
0.00 to 250.00
Ω
in steps of 0.01
Pickup level:
0.015 to 30.000 pu in steps of 0.01
Dropout level:
97 to 98%
Operation time:
<16 ms at 3
×
pickup at 60 Hz
GENERATOR UNBALANCE
Gen. nominal current:
0.000 to 1.250 pu in steps of 0.001
Stages:
2 (I
2
t with linear reset and definite time)
Pickup level:
0.00 to 100.00% in steps of 0.01
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2 x CT rating:
±0.5% of reading or 1% of rated
(whichever is greater)
> 2.0 x CT rating:
±1.5% of reading
Time dial (K-value):
0.00 to 100.00 in steps of 0.01
Pickup delay:
0.0 to 1000.0 s in steps of 0.1
Reset delay:
0.0 to 1000.0 s in steps of 0.1
Timer accuracy:
±3% of operate time or ±20 ms, which-
ever is greater
Operate time:
<50 ms at 60 Hz
SPLIT PHASE PROTECTION
Operating quantity:
split phase CT current biased by genera-
tor load current
Pickup level:
0.020 to 1.500 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
±0.5% of reading or ±1% of rated
Pickup delay:
0.000 to 65.535 s in steps of 0.001
Timer accuracy:
±3% of operate time or ±5 cycles, which-
ever is greater
Operate time:
<5 cycles at 1.10
×
pickup at 60 Hz
SENSITIVE DIRECTIONAL POWER
Measured power:
3-phase, true RMS
Number of stages:
2
Characteristic angle:
0 to 359° in steps of 1
Calibration angle:
0.00 to 0.95° in steps of 0.05
Minimum power:
–1.200 to 1.200 pu in steps of 0.001
Pickup level accuracy:
±1% or ±0.001 pu, whichever is greater
Hysteresis:
2% or 0.001 pu, whichever is greater
Pickup delay:
0 to 600.00 s in steps of 0.01
Timer accuracy:
±3% of operate time or ±1/4 cycle
(whichever is greater)
Operate time:
<50 ms
Summary of Contents for Multilin g60
Page 10: ...x G60 Generator Protection System GE Multilin TABLE OF CONTENTS INDEX ...
Page 32: ...1 22 G60 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 160: ...4 30 G60 Generator Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 486: ...5 326 G60 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 518: ...6 32 G60 Generator Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 532: ...7 14 G60 Generator Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 748: ...D 10 G60 Generator Protection System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 760: ...E 12 G60 Generator Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...