Measurements And Recording; General; Disturbance Records; Event, Fault And Maintenance Records - GE P4A Technical Manual

Chapter 22 - Technical Specifications
5

MEASUREMENTS AND RECORDING

5.1

GENERAL

General measurement accuracy
Phase
Current (0.05 to 3 In)
Voltage (0.05 to 2 Vn)
Frequency (45 to 65 Hz)
Power (W) (0.2 to 2 Vn and 0.05 to 3 In)
Reactive power (Vars) (0.2 to 2 Vn and 0.05 to 3 In)
Apparent power (VA) (0.2 to 2 Vn and 0.05 to 3 In)
Energy (Wh) (0.2 to 2 Vn and 0.2 to 3 In)
Energy (Varh) (0.2 to 2 Vn and 0.2 to 3In)
5.2

DISTURBANCE RECORDS

Minimum record duration
Maximum record duration
Minimum number of records at 10.5 seconds
Magnitude and relative phases accuracy
Duration accuracy
Trigger position accuracy
5.3

EVENT, FAULT AND MAINTENANCE RECORDS

Record location
Viewing method
Extraction method
Number of Event records
Number of Fault Records
Number of Maintenance Records
Event time stamp resolution
5.4

FAULT LOCATOR

Fault Location
518
General Measurement Accuracy
Typically +/- 1%, but +/- 0.5% between 0.2 - 2 In/Vn
0° to 360° +/- 0.5%
+/- 1.0% of reading, or 4mA (1A input), or 20mA (5A input)
+/- 1.0% of reading
+/- 0.025 Hz
+/- 5.0% of reading at unity power factor
+/- 5.0% of reading at zero power factor
+/- 5.0% of reading
+/- 5.0% of reading at unity power factor
+/- 5.0% of reading at zero power factor
Disturbance Records Measurement Accuracy
0.1 s
10.5 s
8
+/- 5% of applied quantities
+/- 2%
+/- 2% (minimum Trigger 100 ms)
Event, Fault & Maintenance Records
Battery-backed memory
Front panel display or Settings Application Software
Extracted via the front serial port
Up to 1024 time tagged event records (newest overwrites oldest)
Up to 15
Up to 10
1 ms
Accuracy
+/- 2% of line length
Reference conditions: solid fault applied on line
P54A/B/C/E
P54xMED-TM-EN-1