GE D60 Instruction Manual page 41

CHAPTER 2: PRODUCT DESCRIPTION
Operate time:
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, test method, and so on, and can vary by
±0.5 cycles.
OVERFREQUENCY
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, test method, and so on, and can vary by
±0.5 cycles.
RATE OF CHANGE OF FREQUENCY
df/dt trend:
df/dt pickup level:
df/dt dropout level:
df/dt level accuracy:
Overvoltage supv.:
Overcurrent supv.:
Pickup delay:
Reset delay:
Timer accuracy:
95% settling time for df/dt:
Operate time:
Typical times are average operate times including variables such as frequency change instance, test method, and so on, and can vary by
±0.5 cycles.
BREAKER FAILURE
Mode:
Current supervision:
Current supv. pickup:
Current supv. dropout:
Current supv. accuracy:
0.1 to 2.0 × CT rating:
above 2 × CT rating:
BREAKER ARCING CURRENT
Principle:
Initiation:
Compensation for auxiliary relays:
D60 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
<30 ms at 1.10 × pickup at 60 Hz
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
±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
increasing, decreasing, bi-directional
0.10 to 15.00 Hz/s in steps of 0.01
96% of pickup
80 mHz/s or 3.5%, whichever is greater
0.100 to 3.000 pu in steps of 0.001
0.020 to 30.000 pu in steps of 0.001
0 to 65.535 s in steps of 0.001
0 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle (whichever is greater)
<24 cycles
typically 9.5 cycles at 2 × pickup
typically 8.5 cycles at 3 × pickup
typically 6.5 cycles at 5 × pickup
1-pole, 3-pole
phase, neutral current
0.020 to 30.000 pu in steps of 0.001
97 to 98% of pickup
±0.75% of reading or ±2% of rated (whichever is greater)
±2.5% of reading
2
accumulates breaker duty (I t) and measures fault duration
programmable per phase from any FlexLogic operand
0 to 65.535 s in steps of 0.001
SPECIFICATIONS
2
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