CHAPTER 2: PRODUCT DESCRIPTION
SPECIFICATIONS
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
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2
LINE PICKUP
Phase instantaneous overcurrent:
0.020 to 30.000 pu
Undervoltage pickup:
0.004 to 3.000 pu
Overvoltage delay:
0.000 to 65.535 s
PHASE/NEUTRAL/GROUND TOC
Current:
Phasor or RMS
Pickup level:
0.020 to 30.000 pu in steps of 0.001
Dropout level:
97% to 98% of pickup
Level accuracy:
0.1 to 2.0
×
CT:
±0.5% of reading or ±0.4% of rated (whichever is greater)
> 2.0
×
CT:
±1.5% of reading > 2.0
×
CT rating
Curve shapes:
IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse,
Short/Very/ Extremely Inverse; I
2
t; FlexCurves™ (programmable); Definite Time (0.01 s base
curve)
Curve multiplier:
Time Dial = 0.00 to 600.00 in steps of 0.01
Reset type:
Instantaneous/Timed (per IEEE)
Curve timing accuracy at 1.03 to 20 x pickup:
±3.5% of operate time or ±½ cycle (whichever is greater) from pickup to operate
Voltage restraint:
Modifies pickup current for voltage in the range of 0.1 < V < 0.9 VT Nominal in a fixed linear rela-
tionship
PHASE/NEUTRAL/GROUND IOC
Pickup level:
0.020 to 30.000 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2.0
×
CT rating:
±0.5% of reading or ±0.4% of rated (whichever is greater)
> 2.0
×
CT rating:
±1.5% of reading
Overreach:
<2%
Pickup delay:
0.00 to 600.00 s in steps of 0.01
Reset delay:
0.00 to 600.00 s in steps of 0.01
Operate time:
<16 ms at 3
×
pickup at 60 Hz (Phase/Ground IOC)
<20 ms at 3
×
pickup at 60 Hz (Neutral IOC)
Timer accuracy:
±3% of operate time or ±1/4 cycle (whichever is greater)
NEGATIVE SEQUENCE TOC
Current:
Phasor
Pickup level:
0.020 to 30.000 pu in steps of 0.001
Dropout level:
97% to 98% of pickup
Level accuracy:
±0.5% of reading or ±0.4% of rated (whichever is greater)
from 0.1 to 2.0 x CT rating
±1.5% of reading > 2.0 x CT rating
Curve shapes:
IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse,
Short/Very/ Extremely Inverse; I
2
t; FlexCurves™ (programmable); Definite Time (0.01 s base
curve)
Curve multiplier (Time dial):
0.00 to 600.00 in steps of 0.01
Reset type:
Instantaneous/Timed (per IEEE) and Linear
Curve timing accuracy
at 1.03 to 20 x pickup:
±3.5% of operate time or ±½ cycle (whichever is greater) from pickup to operate
NEGATIVE SEQUENCE IOC
Current:
Phasor
Pickup level:
0.020 to 30.000 pu in steps of 0.001
Dropout level:
97 to 98% of pickup
Level accuracy:
0.1 to 2.0
×
CT rating: ±0.5% of reading or ±0.4% of rated (whichever is greater); >2.0
×
CT rating:
±1.5% of reading
Overreach:
<2%