Siemens 6MD86 - Instantaneous High-Current Tripping; Overview of Functions; Structure of the Function

Instantaneous High-Current Tripping
Overview of Functions
The Instantaneous high-current tripping function has the following tasks:
•
Instantaneous tripping when switching onto an existing fault, for example, if a grounding switch is
closed.
•
Instantaneous disconnection of high currents above the highest overcurrent-protection stage.
Structure of the Function
The Instantaneous high-current tripping function offers 2 different increment types:
•
Stage with standard release method
•
Stage with release method via protection interface (only applicable if the device is equipped with a
protection interface)
The function with the stage for the standard release procedure is factory-set.
[dwihcstr-230211-01.tif, 1, en_US]
Figure 7-133 Structure/Embedding of the Function
7.11
7.11.1
7.11.2
Protection and Automation Functions
7.11 Instantaneous High-Current Tripping
SIPROTEC 5, High-Voltage Bay Controller, Manual 767
C53000-G5040-C015-9, Edition 11.2017