Metering Specifications - GE D90 Plus Instruction Manual
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (694 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (662 pages)
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SPECIFICATIONS
Metering specifications
38
CURRENT METERING
Type: ......................................................................... phase and ground RMS current
Accuracy at 0.1 to 2.0 × CT: ........................... ±0.25% of reading or ±0.1% of rated, whichever is greater
Accuracy at >2.0 × CT:...................................... ±1.0% of reading
DATA LOGGER
Channels:................................................................ 1 to 16
Parameters:........................................................... any FlexAnalog value
Statistics: ................................................................ maximum and time of maximum, minimum and time of
Alarms:..................................................................... high, high-high, low, low-low
ENERGY METERING
Type: ......................................................................... positive and negative watt-hours and var-hours
Accuracy:................................................................ ±2.0% of reading
Range:...................................................................... –2.0 × 10
Parameters:........................................................... three-phase only
Update rate:.......................................................... 50 ms
FREQUENCY METERING
Accuracy at V = 0.8 to 1.2 pu: ....................... ±0.001 Hz (when voltage signal is used for frequency
Accuracy at I = 0.1 to 0.25 pu: ...................... ±0.05 Hz (when current signal is used for frequency
Accuracy at I > 0.25 pu: ................................... ±0.001 Hz (when current signal is used for frequency
POWER METERING
Real power accuracy:....................................... ±1.0% of reading at –1.0 ≤ PF < 0.8 and 0.8 < PF ≤ 1.0
Reactive power accuracy:.............................. ±1.0% of reading at –0.2 ≤ PF ≤ 0.2
Apparent power accuracy: ............................ ±1.0% of reading
VOLTAGE METERING
Type: ......................................................................... RMS voltage
Accuracy:................................................................ ±0.5% of reading from 30 to 208 volts
minimum, average
9
to 2.0 × 10
measurement)
measurement)
measurement)
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
9
MWh/Mvarh
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