Micom P634 - Deviations; Deviations of the Operate Values

2.9 Deviations
2.9.1 Deviations of the Operate Values
2.9.1.1 Definitions
Reference Conditions
●
Quasi-stationary sinusoidal signals at nominal frequency f
nom
(frequency
protection excepted), 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 with default value 1 for the amplitude matching
factors (DIFF: Matching fact. kam,x = 1, x=a, b, c, d):
●
at I
diff
< 0.2·I
ref
: ± 10%
●
at I
diff
>= 0.2·I
ref
: ± 5%
P634 2 Technical Data
2-18 P634/EN M/R-42-A // P634‑311‑653