GE Multilin g60

2-12 G60 Generator Protection System GE Multilin
2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
THIRD HARMONIC NEUTRAL UNDERVOLTAGE
Operating quantity: 3rd harmonic of auxiliary undervoltage
Undervoltage:
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 102 to 103% of pickup
Accuracy: ±2% of reading from 1 to 120 V
Power:
Pickup level: 0.000 to 1.200 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Accuracy: ±5% or ±0.01 pu, whichever is greater
Undervoltage Inhibit
Level: 0.000 to 3.000 pu in steps of 0.001 pu
Accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0 to 600.00 s in steps of 0.01
Time accuracy: ±3% or ±20 ms, whichever is greater
Operate time: < 30 ms at 1.10  pickup at 60 Hz
PHASE OVERVOLTAGE
Voltage: Phasor only
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0.00 to 600.00 in steps of 0.01 s
Operate time: 30 ms at 1.10  pickup at 60 Hz
Timing accuracy: ±3% or ±4 ms (whichever is greater)
NEUTRAL OVERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0.00 to 600.00 s in steps of 0.01 (definite
time) or user-defined curve
Reset delay: 0.00 to 600.00 s in steps of 0.01
Timing accuracy: ±3% or ±20 ms (whichever is greater)
Operate time: 30 ms at 1.10  pickup at 60 Hz
AUXILIARY OVERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0 to 600.00 s in steps of 0.01
Reset delay: 0 to 600.00 s in steps of 0.01
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
Operate time:  30 ms at 1.10  pickup at 60 Hz
Operate time when 20 Hz injection is performed: 8 power system
cycles
NEGATIVE SEQUENCE OVERVOLTAGE
Pickup level: 0.000 to 1.250 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Pickup delay: 0 to 600.00 s in steps of 0.01
Reset delay: 0 to 600.00 s in steps of 0.01
Time accuracy: ±3% or ±20 ms, whichever is greater
Operate time: < 30 ms at 1.10  pickup at 60 Hz
VOLTS PER HERTZ
Voltage: Phasor only
Pickup level: 0.80 to 4.00 in steps of 0.01 pu V/Hz
Dropout level: 97 to 98% of pickup
Level accuracy: ±0.02 pu
Timing curves: Definite Time; Inverse A, B, and C,
FlexCurves™ A, B, C, and D
TD Multiplier: 0.05 to 600.00 s in steps of 0.01
Reset delay: 0.0 to 1000.0 s in steps of 0.1
Timing accuracy: ±3% or ±15 cycles (whichever is greater)
for values greater than 1.1 × pickup
100% STATOR GROUND
Operating quantity:
Pickup level: 0.000 to 0.900 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy: ±2% of reading from 1 to 120 V
Pickup delay: 0 to 600.00 s in steps of 0.01
3rd harmonic supervision level: 0.0010 to 0.1000 pu in steps of
0.0001
Time accuracy: ±3% or ±20 ms, whichever is greater
Operate time: < 30 ms at 1.10  pickup at 60 Hz
SUB-HARMONIC STATOR GROUND
Stator ground resistance pickup accuracy: ±5% of reading from 1
to 10 kΩ, ±10% of reading from 10 to 20
kΩ
Total stator capacitance to ground: 200 nF to 2 μF
Sub-harmonic voltage metering accuracy: ±2% of reading or 0.2 V
from 0.5 to 25 V AC
Sub-harmonic current metering accuracy: ±2% of reading or 5 mA
from 5 to 200 mA
Sub-harmonic element operating time: 0.6 to 1.2 s
Sub-harmonic element dropout level accuracy: 102 to 103% of
pickup
Time delay accuracy: ±3% of time delay setting or ± 4 ms,
whichever is greater
FIELD GROUND
Measured field ground resistance: 1 kΩ to 20 MΩ
Ground resistance accuracy:±5% of reading ±250 Ω from 1 to 500
kΩ
Field winding capacitance: 1 to 10 μF
Maximum field voltage: 600 V DC rated field voltage / 1000 V
ripple peak for single box option; 800
V DC rated field voltage / 2000 V ripple
peak for external resistor box option
Field voltage measurement range: 15 to 800 V
Field voltage measurement accuracy: ±1 V or ±3% of reading (for
GPM-F-L); ±1 V or ±5% of reading (for
GPM-F-H)
Field ground RMS current accuracy: ±5% of reading
Fault location accuracy: ±5% of reading
Field ground resistance typical operating time: 1.1 s + (1 / injection
frequency)
Field ground element dropout level accuracy: 102 to 103% of
pickup
Time delay accuracy: ±3% of time delay setting or ±4ms,
whichever is greater
V_neutral_3rd
V_neutral_3rd V_zero_3rd+
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