Siemens 7KE85 - Trigger Functions 1-Phase; Voltage Trigger; Overview of Functions; Structure of the Function

Trigger Functions 1-Phase
Voltage Trigger
Overview of Functions
Voltage triggers start with exceeding or dropping below the set limiting values (level and gradient trigger) in
the fast-scan and slow-scan recorders. It is triggered by fundamental values, RMS values, or on symmetrical
components.
Structure of the Function
The Voltage trigger function can be configured in the Voltage/current 1-phase function group. The structure
of the Voltage trigger function is shown in the following figure:
[dw_voltage trigger 1-phase, 1, en_US]
Figure 7-53 Structure/Embedding of the Voltage/Current 1-Phase Function
A maximum of 3 function blocks of the same type can be entered or removed within the function. In order to
distinguish the function blocks, they automatically receive a sequential number in the name of the function
block, for example, Trig V fund. 1, Trig V fund. 2, and Trig V fund. 3.
Each function block contains the level triggers Max. trigger and Min. trigger, as well as the gradient
triggers dM/dt rise (/Filter time) and dM/dt drop active of the corresponding measurand.
Function Description
Logic
The following logic diagram shows the operating state of a voltage trigger.
7.4
7.4.1
7.4.1.1
7.4.1.2
7.4.1.3
Fault Recorder
7.4 Trigger Functions 1-Phase
SIPROTEC 5, Fault Recorder, Manual 271
C53000-G5040-C018-5, Edition 11.2017