GE T60 Instruction Manual page 44

SPECIFICATIONS
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timer accuracy:
Operate time:
2 NEGATIVE SEQUENCE OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timer accuracy:
Operate time:
VOLTS PER HERTZ
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Timing curves:
TD Multiplier:
Reset delay:
Timer accuracy:
TRANSFORMER HOTTEST-SPOT TEMPERATURE
Operating quantity:
Pickup level:
Dropout level:
Pickup delay:
TRANSFORMER AGING FACTOR
Operating quantity:
Pickup level:
Pickup delay:
TRANSFORMER LOSS OF LIFE
Operating quantity:
Pickup level:
UNDERFREQUENCY
Minimum signal:
Pickup level:
Dropout level:
Level accuracy:
Time delay:
Timer accuracy:
Operate time:
Typical times are average operate times including variables, such as frequency change instance, and test method, and can vary by ±0.5
cycles.
OVERFREQUENCY
Pickup level:
Dropout level:
2-30
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
0 to 600.00 s in steps of 0.01
±3% of operate time or ±20 ms, whichever is greater
<30 ms at 1.10 × pickup at 60 Hz
Phasor only
0.80 to 4.00 in steps of 0.01 pu V/Hz
97 to 98% of pickup
±0.02 pu
0 to 600.00 s in steps of 0.01
Definite Time; Inverse A, B, and C, FlexCurves™ A, B, C, and D
0.05 to 600.00 s in steps of 0.01
0.0 to 1000.0 s in steps of 0.1
±3% of operate time or ±3 cycles (whichever is greater) for values greater than 1.1 × pickup
computed temperature in °C
50 to 300°C in steps of 1
1°C below pickup
0 to 30000 min. in steps of 1
computed aging acceleration factor (pu)
1 to 10 pu in steps of 0.1
0 to 30000 min. in steps of 1
computed accumulated transformer loss of life, in hours
0 to 500000 hours in steps of 1
0.10 to 1.25 pu in steps of 0.01
20.00 to 65.00 Hz in steps of 0.01
pickup + 0.03 Hz
±0.001 Hz
0 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle (whichever is greater)
typically 4 cycles at 0.1 Hz/s change
typically 3.5 cycles at 0.3 Hz/s change
typically 3 cycles at 0.5 Hz/s change
20.00 to 65.00 Hz in steps of 0.01
pickup – 0.03 Hz
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION