Metering; Inputs - GE L60 Instruction Manual

2 PRODUCT DESCRIPTION
FAULT LOCATOR
Method: single-ended
Voltage source: wye-connected VTs, delta-connected
VTs and neutral voltage, delta-connected
VTs and zero-sequence current (approxi-
mation)
Maximum accuracy if: fault resistance is zero or fault currents
from all line terminals are in phase
Relay accuracy: ±1.5% (V > 10 V, I > 0.1 pu)
Worst-case accuracy:
VT + user data
%error
CT + user data
%error
Z + user data
Line%error
METHOD + see chapter 8
%error
RELAY ACCURACY + (1.5%)
%error
RMS CURRENT: PHASE, NEUTRAL, AND GROUND
Accuracy at
0.1 to 2.0 × CT rating: ±0.25% of reading or ±0.1% of rated
(whichever is greater)
> 2.0 × CT rating:
±1.0% of reading
RMS VOLTAGE
Accuracy: ±0.5% of reading from 10 to 208 V
REAL POWER (WATTS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
±1.0% of reading at –1.0 ≤ PF< –0.8 and
1.2 x VT rating:
0.8 < PF ≤ 10
REACTIVE POWER (VARS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
±1.0% of reading at –0.2 ≤ PF ≤ 0.2
1.2 x VT rating:
APPARENT POWER (VA)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating: ±1.0% of reading
AC CURRENT
CT rated primary: 1 to 50000 A
CT rated secondary: 1 A or 5 A by connection
Relay burden: < 0.2 VA at rated secondary
Conversion range:
0.02 to 46 × CT rating RMS symmetrical
Standard CT:
Sensitive Ground CT module:
0.002 to 4.6 × CT rating RMS symmetrical
Current withstand: 20 ms at 250 times rated
1 sec. at 100 times rated
continuous 4xInom
Short circuit rating:150000 RMS sym-
metrical amperes, 250 V maximum (pri-
mary current to external CT)
GE Multilin
WATT-HOURS (POSITIVE AND NEGATIVE)
Accuracy:
Range:
Parameters:
Update rate:
VAR-HOURS (POSITIVE AND NEGATIVE)
Accuracy:
Range:
Parameters:
Update rate:
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu:
I = 0.1 to 0.25 pu:
I > 0.25 pu:
AC VOLTAGE
VT rated secondary:
VT ratio:
Conversion range:
Voltage withstand:
L60 Line Phase Comparison System
2.2 SPECIFICATIONS

2.2.4 METERING

±2.0% of reading
6
±0 to 1 × 10
MWh
three-phase only
50 ms
±2.0% of reading
6
±0 to 1 × 10 Mvarh
three-phase only
50 ms
±0.01 Hz (when voltage signal is used
for frequency measurement)
±0.05 Hz
±0.02 Hz (when current signal is used for
frequency measurement)

2.2.5 INPUTS

50.0 to 240.0 V
1.00 to 24000.00Relay burden:< 0.25 VA
at 120 V
1 to 275 V
continuous at 260 V to neutral
1 min./hr at 420 V to neutral
2
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