2.9
Deviations
2.9.1
Deviations of the Operate Values
2.9.1.1
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.
2.9.1.2
Differential Protection
Measuring system
●
at I
diff
< 0.2·I
ref
: ± 10%
●
at I
diff
>= 0.2·I
ref
: ± 5%
Inrush Stabilization (Harmonic restraint)
●
Deviation: ± 10%
2.9.1.3
Restricted Earth-Fault Protection
●
Measuring system at I
d
= 0.2·I
ref
: ± 5%
2.9.1.4
Overcurrent-Time Protection
Operate values
●
Deviation: ± 5%
2.9.1.5
Thermal Overload Protection
Operate value
Θ
●
Deviation: ± 5%
2.9.1.6
Frequency Protection
Operate values f<>
●
± 30 mHz (
f
nom
= 50 Hz)
●
± 40 mHz (
f
nom
= 60 Hz)
P631
2 Technical Data
2-18
P631/EN M/R-11-C // P631-310-650
Содержание P631
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