User-Programmable Elements - GE L60 Instruction Manual

2 PRODUCT DESCRIPTION
AUTORECLOSURE
Two breakers applications
Single- and three-pole tripping schemes
Up to 4 reclose attempts before lockout
Selectable reclosing mode and breaker sequence
PILOT-AIDED SCHEMES
Permissive Overreaching Transfer Trip (POTT)
TRIP OUTPUT
Collects trip and reclose input requests and issues outputs to con-
trol tripping and reclosing.
Communications timer delay: 0 to 65535 s in steps of 0.001
Evolving fault timer: 0.000 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±1/4 cycle
(whichever is greater)
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. Ω): 0.10 to 500.00 Ω in steps of 0.01
Left and right blinders (sec. Ω): 0.10 to 500.00 Ω 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)
FLEXLOGIC
Programming language: Reverse Polish Notation with graphical
visualization (keypad programmable)
Lines of code: 512
Internal variables: 64
Supported operations: 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
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
GE Multilin
LOAD ENCROACHMENT
Responds to:
Minimum voltage:
Reach (sec. Ω):
Impedance accuracy:
Angle:
Angle accuracy:
Pickup delay:
Reset delay:
Timer accuracy:
Operate time:
OPEN POLE DETECTOR
Functionality:
Current pickup level:
Line capacitive reactances (X
Remote current pickup level: 0.000 to 30.000 pu in steps of 0.001
Current dropout level:
THERMAL OVERLOAD PROTECTION
Thermal overload curves: IEC 255-8 curve
Base current:
Overload (k) factor:
Trip time constant:
Reset time constant:
Minimum reset time:
Timer accuracy (cold curve): ±100 ms or 2%, whichever is greater
Timer accuracy (hot curve): ±500 ms or 2%, whichever is greater
TRIP BUS (TRIP WITHOUT FLEXLOGIC)
Number of elements:
Number of inputs:
Operate time:
Timer accuracy:
FLEXCURVES™
Number:
Reset points:
Operate points:
Time delay:
FLEX STATES
Number:
Programmability:
L60 Line Phase Comparison System
2.2 SPECIFICATIONS
Positive-sequence quantities
0.000 to 3.000 pu in steps of 0.001
0.02 to 250.00 Ω in steps of 0.01
±5%
5 to 50° in steps of 1
±2°
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)
<30 ms at 60 Hz
Detects an open pole condition, monitor-
ing breaker auxiliary contacts, the cur-
rent in each phase and optional voltages
on the line
0.000 to 30.000 pu in steps of 0.001
): 300.0 to 9999.9 sec. Ω in
, X
C1 C0
steps of 0.1
pickup + 3%, not less than 0.05 pu
0.20 to 3.00 pu in steps of 0.01
1.00 to 1.20 pu in steps of 0.05
0 to 1000 min. in steps of 1
0 to 1000 min. in steps of 1
0 to 1000 min. in steps of 1
for I < 0.9 × k × I and I / (k × I
p b
6
16
<2 ms at 60 Hz
±3% or 10 ms, whichever is greater

2.2.2 USER-PROGRAMMABLE ELEMENTS

4 (A through D)
40 (0 through 1 of pickup)
80 (1 through 20 of pickup)
0 to 65535 ms in steps of 1
up to 256 logical variables grouped
under 16 Modbus addresses
any logical variable, contact, or virtual
input
2
) > 1.1
b
2-13