Tolerances for Stage Type Inverse-Time Undervoltage Protection
Voltages 0.5 % of the setting value or 0.05 V
Currents 1 % of the setting value or 5 mA (I
rated
= 1 A) or 25 mA
(I
rated
= 5 A, f
rated
± 10 %), valid for protection-class
current transformers
1 % of the setting value or 0.1 mA (I
rated
= 1.6 A) or
0.5 mA (I
rated
= 8 A, f
rated
± 10 %), valid for instrument
transformers
Operate time for 0 < V/V
Thresh
< 0.9 5 % of the setting value or 30 ms
Reset time delay 1 % of the setting value or 10 ms
Technical Data
11.20 Undervoltage Protection with 3-Phase Voltage
SIPROTEC 5, High-Voltage Bay Controller, Manual 1157
C53000-G5040-C015-9, Edition 11.2017
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