Frequency Trigger; Overview Of Functions; Structure Of The Function; Function Description - Siemens SIPROTEC 5 Manual

No.
Trig. I fund 1
_:9751:54
_:9751:52
_:9751:53
_:9751:301
7.4.3

Frequency Trigger

7.4.3.1

Overview of Functions

Frequency 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 on the power frequency.
7.4.3.2

Structure of the Function

The Frequency trigger function can be configured in the Voltage/current 1-phase function group.
The structure of the function Frequency trigger is shown in the following figure:
[dw_frequency trigger 1-phase, 1, en_US]
Figure 7-57
A maximum of 3 function blocks of the same type can be entered or removed within the function. For unam-
biguous differentiation, the function blocks automatically receive a sequential number in the name of the
function block, for example, Frq. Trigger 1, Frq. Trigger 2, Frq. Trigger 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.
7.4.3.3

Function Description

Logic
The following logic diagram shows the operating state of the frequency trigger.
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
Information
Trig. I fund 1:Inactive
Trig. I fund 1:Behavior
Trig. I fund 1:Health
Trig. I fund 1:Trigger active
Structure/Embedding of the Function
Fault Recorder
7.4 Trigger Functions 1-Phase
Data Class Type
(Type)
SPS O
ENS O
ENS O
SPS O
285