GE L90 User Manual

CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONS
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-43
2
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 specification sections
Network reporting format: 16-bit integer (for IEEE C37.118) or 32-bit IEEE floating point numbers
Network reporting style: rectangular (real and imaginary for IEEE C37.188) or polar (magnitude and angle) coordinates
Post-filtering: none, 3-point, 5-point, 7-point
Calibration: ±5° (angle) and ±5% (magnitude)
2.6.4 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
CURRENT HARMONICS
Harmonics: 2nd to 25th harmonic: per phase, displayed as a % of f
1
(fundamental frequency phasor)
THD: per phase, displayed as a % of f
1
Accuracy:
HARMONICS: 1. f
1
> 0.4pu: (0.20% + 0.035% / harmonic) of reading or 0.15% of 100%, whichever is greater
2. f
1
< 0.4pu: as above plus %error of f
1
THD: 1. f
1
> 0.4pu: (0.25% + 0.035% / harmonic) of reading or 0.20% of 100%, whichever is greater
2. f
1
< 0.4pu: as above plus %error of f
1
VOLTAGE HARMONICS
Harmonics: 2nd to 25th harmonic: per phase, displayed as a % of f
1
(fundamental frequency phasor)
THD: per phase, displayed as a % of f
1
Accuracy:

GE L90 Specifications

General

Communication	Ethernet, Serial
Mounting	Panel Mount
Frequency	50/60 Hz
Inputs	Digital, Analog
Outputs	Relay
Control	Local, Remote
Communication Interface	IEC 61850, DNP3, Modbus
Protection Functions	Differential, Ground Fault
Standards Compliance	IEC, IEEE