User-Programmable Elements - GE N60 Instruction Manual

2.3 SPECIFICATIONS
RATE OF CHANGE OF FREQUENCY
df/dt trend:
df/dt pickup level:
df/dt dropout level:
df/dt level accuracy:
Overvoltage supv.:
Overcurrent supv.:
2
Pickup delay:
Reset delay:
Timer accuracy:
95% settling time for df/dt: <24 cycles
Operate time:
Typical times are average operate times including variables such
as frequency change instance, test method, etc., and may vary by
±0.5 cycles.
SYNCHROCHECK
Max voltage difference: 0 to 400000 V in steps of 1
Max angle difference:
Max freq. difference:
Hysteresis for max. freq. diff.: 0.00 to 0.10 Hz in steps of 0.01
Dead source function:
FLEXLOGIC
Programming language: Reverse Polish Notation with graphical
Lines of code:
Internal variables:
Supported operations:
2-14
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
0.000 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)
typically 6.5 cycles at 2  pickup
typically 5.5 cycles at 3  pickup
typically 4.5 cycles at 5  pickup
°
0 to 100 in steps of 1
0.00 to 2.00 Hz in steps of 0.01
None, LV1 & DV2, DV1 & LV2, DV1 or
DV2, DV1 xor DV2, DV1 & DV2
(L = Live, D = Dead)
visualization (keypad programmable)
512
64
NOT, XOR, OR (2 to 16 inputs), AND (2
to 16 inputs), NOR (2 to 16 inputs),
NAND (2 to 16 inputs), latch (reset-domi-
nant), edge detectors, timers
N60 Network Stability and Synchrophasor Measurement System
2 PRODUCT DESCRIPTION
POWER SWING DETECT
Functions: Power swing block, Out-of-step trip
Characteristic: Mho or Quad
Measured impedance: Positive-sequence
Blocking / tripping modes: 2-step or 3-step
Tripping mode: Early or Delayed
Current supervision:
Pickup level: 0.050 to 30.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Fwd / reverse reach (sec. ): 0.10 to 500.00  in steps of 0.01
Left and right blinders (sec. ): 0.10 to 500.00  in steps of 0.01
Impedance accuracy: ±5%
Fwd / reverse angle impedances: 40 to 90° in steps of 1
Angle accuracy: ±2°
Characteristic limit angles: 40 to 140° in steps of 1
Timers: 0.000 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±1/4 cycle
(whichever is greater)
OPEN POLE DETECTOR
Functionality: Detects an open pole condition, monitor-
ing breaker auxiliary contacts, the cur-
rent in each phase and optional voltages
on the line
Current pickup level: 0.000 to 30.000 pu in steps of 0.001
Line capacitive reactances (X , X
C1
steps of 0.1
Remote current pickup level: 0.000 to 30.000 pu in steps of 0.001
Current dropout level: pickup + 3%, not less than 0.05 pu
THERMAL OVERLOAD PROTECTION
Thermal overload curves: IEC 255-8 curve
Base current: 0.20 to 3.00 pu in steps of 0.01
Overload (k) factor: 1.00 to 1.20 pu in steps of 0.05
Trip time constant: 0 to 1000 min. in steps of 1
Reset time constant: 0 to 1000 min. in steps of 1
Minimum reset time: 0 to 1000 min. in steps of 1
Timer accuracy (cold curve): ±100 ms or 2%, whichever is greater
Timer accuracy (hot curve): ±500 ms or 2%, whichever is greater
for I < 0.9 × k × I
p
TRIP BUS (TRIP WITHOUT FLEXLOGIC)
Number of elements: 6
Number of inputs: 16
Operate time: <2 ms at 60 Hz
Timer accuracy: ±3% or 10 ms, whichever is greater

2.3.2 USER-PROGRAMMABLE ELEMENTS

Inputs: any logical variable, contact, or virtual
input
Number of timers: 32
Pickup delay: 0 to 60000 (ms, sec., min.) in steps of 1
Dropout delay: 0 to 60000 (ms, sec., min.) in steps of 1
): 300.0 to 9999.9 sec.  in
C0
and I / (k × I ) > 1.1
b b
GE Multilin