GE N60 Instruction Manual page 29

CHAPTER 2: PRODUCT DESCRIPTION
Level sensing:
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
SENSITIVE DIRECTIONAL POWER
Measured power:
Number of stages:
Characteristic angle:
Calibration angle:
Minimum power:
Pickup level accuracy:
Hysteresis:
Pickup delay:
Timer accuracy:
Operate time:
PHASE UNDERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Curve timing accuracy at <0.90 x pickup:
Operate time:
PHASE OVERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Operate time:
Timer accuracy:
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:
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
3 × (|I_0| – K × |I_1|), IG
Independent for forward and reverse
0.000 to 0.500 in steps of 0.001
–90 to 90° in steps of 1
40 to 90° in steps of 1, independent for forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.002 to 30.000 pu in steps of 0.01
97 to 98%
<16 ms at 3 × pickup at 60 Hz
3-phase, true RMS
2
0 to 359° in steps of 1
0.00 to 0.95° in steps of 0.05
–1.200 to 1.200 pu in steps of 0.001
±1% or ±0.001 pu, whichever is greater
2% or 0.001 pu, whichever is greater
0 to 600.00 s in steps of 0.01
±3% of operate time or ±1/4 cycle (whichever is greater)
<50 ms
0.004 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse;
Definite Time (0.1s base curve)
Time dial = 0.00 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
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)
0.10 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
SPECIFICATIONS
2
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