GE L60 Instruction Manual page 37

CHAPTER 2: PRODUCT DESCRIPTION
V2 ANGLE SHIFT:
AUTORECLOSURE
Two breakers applications
Single- and three-pole tripping schemes
Up to four 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 control tripping and reclosing.
Communications timer delay:
Evolving fault timer:
Timer accuracy:
POWER SWING DETECT
Functions:
Characteristic:
Measured impedance:
Blocking / tripping modes:
Tripping mode:
Current supervision:
Pickup level:
Dropout level:
Fwd / reverse reach (sec. Ω):
Left and right blinders (sec. Ω):
Impedance accuracy:
Fwd / reverse angle impedances:
Angle accuracy:
Characteristic limit angles:
Timers:
Timer accuracy:
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 , X
C1
Remote current pickup level:
Current dropout level:
THERMAL OVERLOAD PROTECTION
Thermal overload curves:
Base current:
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
° °
-180 to +180 in steps of 1
0 to 65535 s in steps of 0.001
0.000 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle (whichever is greater)
Power swing block, out-of-step trip
Mho or Quad
Positive-sequence
2-step or 3-step
Early or Delayed
0.050 to 30.000 pu in steps of 0.001
97 to 98% of pickup
0.10 to 500.00 Ω in steps of 0.01
0.10 to 500.00 Ω in steps of 0.01
±5%
40 to 90° in steps of 1
±2°
40 to 140° in steps of 1
0.000 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle (whichever is greater)
Positive-sequence quantities
0.004 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, monitoring breaker auxiliary contacts, the current in each
phase, and optional voltages on the line
0.020 to 30.000 pu in steps of 0.001
): 300.0 to 9999.9 sec. Ω in steps of 0.1
C0
0.000 to 30.000 pu in steps of 0.001
pickup + 3%, not less than 0.05 pu
IEC 255-8 curve
0.20 to 3.00 pu in steps of 0.01
°
SPECIFICATIONS
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