[loocpgnd-030311-01.vsd, 2, en_US]
Figure 7-86
Principle of the Dynamic Settings in the Example of 1st Definite-Time Overcurrent Protection
Stage
If available in the device, the following functionalities can affect the overcurrent-protection stages:
Functionalities
Priority
Automatic reclosing (AREC)
Priority 1
Cold-load pickup detection
Priority 2
Binary input signal
Priority 3
These functionalities generate signals that change the settings of the dynamic settings of the overcurrent-
protection stage or block it, if required. In the latter case, the settings for the
Threshold
and the
Operate
delay
are of no relevance. Within the overcurrent-protection stage, each of these signals is provided with a
configuration parameter
Influence of function ...
and its own dynamic settings (
Operate delay
and
Threshold
). The configuration settings are used to set whether the signal shall be active or not, this
means whether the dynamic settings shall be activated or not. If one of these signals (for example, signal
function x) becomes active and is to take effect, these parameter settings become dynamic, that is, instantly
active. This means that the setting assigned to the signal replaces the standard setting. If the signal becomes
inactive, the standard settings apply again. The activation of the dynamic settings is reported.
Protection and Automation Functions
7.5 Overcurrent Protection, Ground
SIPROTEC 5, High-Voltage Bay Controller, Manual
663
C53000-G5040-C015-9, Edition 11.2017
Summary of Contents for 6MD85
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