Function Description
Logic
[lo_TOLP_UserCurve_stage, 1, en_US]
Figure 6-168
Logic Diagram of the Thermal Overload Protection, User-Defined Characteristic Curve Function
(1) The (_:101) Rated current parameter is from the protected object.
(2) The (_:104) Rated primary current parameter is from the used current transformer.
User-Defined Characteristic Curve
For specific equipment (for example, shunt reactors and transformers) or for special applications, the manu-
facturer specifies an overload characteristic curve. This curve cannot be described accurately with a single-
6.20.3
Protection and Automation Functions
6.20 Thermal Overload Protection, User-Defined Characteristic Curve
666 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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