GE G30 - Metering

2-24 G30 Generator Protection System GE Multilin
2.4 SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
DATA LOGGER
Number of channels: 1 to 16
Parameters: any available analog actual value
Sampling rate: 15 to 3600000 ms in steps of 1
Trigger: any FlexLogic operand
Mode: continuous or triggered
Storage capacity: (NN is dependent on memory)
1-second rate:
01 channel for NN days
16 channels for NN days
↓
60-minute rate:
01 channel for NN days
16 channels for NN days
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
CURRENT HARMONICS
Harmonics: 2nd to 25th harmonic: per phase, dis-
played as a % of f
1
(fundamental fre-
quency 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, dis-
played as a % of f
1
(fundamental fre-
quency 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
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: ±0.005 Hz
I > 0.25 pu: ±0.02 Hz (when current signal is used for
frequency measurement)