2.9.3
Deviations of Measured Data Acquisition
2.9.3.1
Definitions
Reference conditions
●
Sinusoidal signals at nominal frequency fnom, total harmonic distortion
≤
2%, ambient temperature 20°C (68°F), and nominal auxiliary voltage
V
A,nom
.
Deviation
●
Deviation relative to the setting under reference conditions.
2.9.3.2
Operating Data Measurement
●
Currents (measuring inputs): ± 1%
●
Voltages (measuring input): ± 0.5%
●
Currents (internally calculated): ± 2%
●
Voltages (internally calculated): ± 2%
●
Frequency: ± 10 mHz
2.9.3.3
Fault Data
Short-circuit current and voltage
●
Deviation: ± 3%
Short-circuit impedance, reactance, and fault location
●
Deviation: ± 5%
2.9.3.4
Internal Clock
With free running internal clock
●
Deviation: < 1 min/month
With external synchronization (with a synchronization interval
≤
1 min)
●
Deviation: < 10 ms
With synchronization via IRIG-B interface
●
± 1 ms
P631
2 Technical Data
2-20
P631/EN M/R-11-C // P631-310-650
Содержание P631
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