Micom P634 - Deviations of the Timer Stages; Deviations of Measured Data Acquisition

2.9.2 Deviations of the Timer Stages
2.9.2.1 Definitions
Reference conditions
●
Sinusoidal signals at nominal frequency f
nom
, 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.
2.9.2.2 Definite-time stages
●
Deviation: ± 1% + 20 ms to 40 ms
2.9.2.3 Inverse-time stages
●
Deviation when I ≥ 2 I
ref
: ± 5% + 10 to 25 ms
●
For “extremely inverse” IEC characteristics and for thermal overload
characteristics: ± 7.5% + 10 to 20 ms
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, differential and restraining currents
●
Deviation: ± 3%
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
P634
2 Technical Data
2-20 P634/EN M/R-42-A // P634‑311‑653