GE G30 Instruction Manual page 37

Generator protection system 7.6x
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CHAPTER 2: PRODUCT DESCRIPTION
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Curve timing accuracy at <0.90 x pickup:
Operate time:
THIRD HARMONIC NEUTRAL UNDERVOLTAGE
Operating quantity:
Undervoltage:
Pickup level:
Dropout level:
Accuracy:
Power:
Pickup level:
Dropout level:
Accuracy:
Undervoltage Inhibit
Level:
Accuracy:
Pickup delay:
Timer accuracy:
Operate time:
PHASE OVERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Operate time:
Timer accuracy:
NEUTRAL OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Curve timing accuracy at >1.1 pickup: ±3.5% of operate time or ±1 cycle (whichever is greater) from pickup to operate
Operate time:
AUXILIARY OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timer accuracy:
Operate time:
NEGATIVE SEQUENCE OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
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
3rd harmonic of auxiliary undervoltage
0.0010 to 3.0000 pu in steps of 0.0001
102 to 103% of pickup
±2% of reading from 1 to 120 V
0.000 to 1.250 pu in steps of 0.001
97 to 98% of pickup
±5% or ±0.01 pu, whichever is greater
0.000 to 1.250 pu in steps of 0.001 pu
±0.5% of reading from 10 to 208 V
0 to 600.00 s in steps of 0.01
±3% of operate time or ±20 ms, whichever is greater
<30 ms at 0.9 × pickup at 60 Hz
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
0.00 to 600.00 in steps of 0.01 s
<30 ms at 1.10 × pickup at 60 Hz
±3% of operate time or ±1/4 cycle (whichever is greater)
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
0.00 to 600.00 s in steps of 0.01 (definite time) or user-defined curve
0.00 to 600.00 s in steps of 0.01
<30 ms at 1.10 pickup at 60 Hz
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
0 to 600.00 s in steps of 0.01
0 to 600.00 s in steps of 0.01
±3% of operate time or ±1/4 cycle (whichever is greater)
<30 ms at 1.10 × pickup at 60 Hz
0.004 to 1.250 pu in steps of 0.001
97 to 98% of pickup
±0.5% of reading from 10 to 208 V
0 to 600.00 s in steps of 0.01
SPECIFICATIONS
2
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