5 MEASUREMENTS AND RECORDING
5.1 GENERAL
General Measurement Accuracy
General measurement accuracy Typically +/- 1%, but +/- 0.5% between 0.2 - 2 In/Vn
Phase 0° to 360° +/- 5.0%
Current (0.05 to 3 In) +/- 1.0% of reading, or 4mA (1A input), or 20mA (5A input)
Voltage (0.05 to 2 Vn) +/- 1.0% of reading
Frequency (40 to 70 Hz) +/- 0.025 Hz
Power (W) (0.2 to 2 Vn and 0.05 to 3 In) +/- 5.0% of reading at unity power factor
Reactive power (Vars) (0.2 to 2 Vn and 0.05 to 3 In) +/- 5.0% of reading at zero power factor
Apparent power (VA) (0.2 to 2 Vn and 0.05 to 3 In) +/- 5.0% of reading
Energy (Wh) (0.2 to 2 Vn and 0.2 to 3 In) +/- 5.0% of reading at zero power factor
Energy (Varh) (0.2 to 2 Vn and 0.2 to 3) In +/- 5.0% of reading at zero power factor
5.2 DISTURBANCE RECORDS
Disturbance Records Measurement Accuracy
Minimum record duration 0.1 s
Maximum record duration 10.5 s
Minimum number of records at 10.5 seconds 8
Magnitude and relative phases accuracy ±5% of applied quantities
Duration accuracy ±2%
Trigger position accuracy ±2% (minimum Trigger 100 ms)
5.3 EVENT, FAULT AND MAINTENANCE RECORDS
Event, Fault & Maintenance Records
Record location Flash memory
Viewing method Front panel display or MiCOM S1 Agile
Extraction method Extracted via the USB port
Number of Event records Up to 512 time tagged event records
Number of Fault Records Up to 5
Number of Maintenance Records Up to 10
Event time stamp resolution 1 ms
5.4 FAULT LOCATOR
Accuracy
Fault Location
+/- 3.5% of line length up to SIR 30
Reference conditions: solid fault applied on line
MiCOM P747 Chapter 16 - Technical Specifications
P747-TM-EN-1 393
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