GEK-113285A G650 Generator Protection & Control System 2-13
2 PRODUCT DESCRIPTION 2.4 TECHNICAL SPECIFICATIONS
2
2.4.1.13 GENERATOR THERMAL MODEL (49S)
2.4.1.14 RESTRICTED GROUND FAULT (87G)
2.4.1.15 PHASE OVERVOLTAGE (59P)
Current Input Fundamental Phasor (without harmonics)
Rated current For connection to 1 or 5 A CTs.
Pickup level 0.05 to 160.0 A in steps of 0.01 A
Dropout level 97% to 98% of the pickup level
Level Accuracy
Values at nominal frequency:
±0.5% of the reading ± 10 mA from 0.05 to 10 A
±1.5% of the reading for higher values
Timing accuracy ±3.5% of operate time or 50 ms. (whichever is greater)
Heating constant 3.0 to 600.0 minutes in steps of 0.1 minute
Cooling constant 1.00 to 6.00 times the heating constant in steps of 0.01
K1 constant 0.0 to 8.0 in steps of 0.1 (Negative sequence influence)
Snapshot Events Selectable by setting
Pickup level
0.02 to 20.00 in units of Phase CT Primary in steps of
0.01
Dropout level 97% to 98 % of the pickup level
Slope 0.00 to 100.00 % in steps of 0.01%
Trip delay
0.00 to 600.00 s in steps of 0.01 s
Operate time <50 ms at 50 Hz, typically
Timing accuracy ±3% of operate time or 50 ms. (whichever is greater)
Snapshot Events Selectable by setting
Voltage Input Fundamental Phasor (without harmonics) of phase-to-
phase voltages
Pickup level 3 to 500 in steps of 1 V
Dropout level 97% to 98% of the pickup level
Level Accuracy
±1% reading ±0.1% Full Scale from 10 to 500 V at
nominal frequency
Trip delay 0.00 to 900.00 s. in steps of 0.01 s.
Reset delay 0.00 to 900.00 s. in steps of 0.01 s.
Timing accuracy ±3.5% of operate time or 50 ms. (whichever is greater)
Logic Any/Two/All phases logic selectable by setting
Snapshot Events Selectable by setting
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