4.13 Overexcitation (Volt/Hertz) Protection (ANSI 24)
327
7UM61 Manual
C53000-G1176-C127-3
Influencing Variables
Figure 4-6 Resulting Tripping Characteristic from Thermal Replica and Stage Characteris-
tic of the Overexcitation Protection (Default Setting)
Auxiliary DC voltage in range
0.8 ≤ U
Aux
/U
AuxN
≤ 1.15
≤ 1 %
Temperature in Range
23°F or –5 °C ≤ Θ
amb
≤ 131°F or 55 °C
≤ 0.5 % / 10 K
Harmonics
– Up to 10 % 3rd harmonic
– Up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
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