GE UR Series L90, Instruction Manual, Page: 61 / 846

GE Multilin L90 Line Current Differential System 2-27
2 PRODUCT DESCRIPTION 2.4 SPECIFICATIONS
2
PHASOR MEASUREMENT UNIT
Output format: per IEEE C37.118 or IEC 61850-90-5
standard
Number of channels: 14 synchrophasors, 8 analogs, 16 digi-
tals
TVE (total vector error) <1%
Triggering:
frequency, voltage, current, power, rate
of change of frequency, user-defined
Reporting rate: 1, 2, 5, 10, 12, 15, 20, 25, 30, 50, or 60
times per second for P and M class, and
100 or 120 times per second for P class
only
Number of clients: One over TCP/IP port and one over
UDP/IP per aggregator
AC ranges: As indicated in appropriate specifications
sections
Network reporting format: 16-bit integer (for C37.118) or 32-bit
IEEE floating point numbers
Network reporting style: rectangular (real and imaginary for
C37.188) or polar (magnitude and angle)
coordinates
Post-filtering: none, 3-point, 5-point, 7-point
Calibration: ±5° (angle) and ±5% (magnitude)
2.4.4 METERING
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
1.2 x VT rating:
±1.0% of reading at –1.0

PF< –0.8 and
0.8 < PF

10
REACTIVE POWER (VARS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating:
±1.0% of reading at –0.2

PF

0.2
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
WATT-HOURS (POSITIVE AND NEGATIVE)
Accuracy: ±2.0% of reading
Range: ±0 to 1

10
6
MWh
Parameters: three-phase only
Update rate: 50 ms
VAR-HOURS (POSITIVE AND NEGATIVE)
Accuracy: ±2.0% of reading
Range: ±0 to 1

10
6
Mvarh
Parameters: three-phase only
Update rate: 50 ms
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu: ±0.001 Hz (when voltage signal is used
for frequency measurement)
I = 0.1 to 0.25 pu: ±0.05 Hz
I > 0.25 pu: ±0.001 Hz (when current signal is used
for frequency measurement)
DEMAND
Measurements: Phases A, B, and C present and maxi-
mum measured currents
3-Phase Power (P, Q, and S) present
and maximum measured currents
Accuracy: ±2.0%