NOTE
The Magnitude correction parameter has nothing to do with the internal adjustment of the input
circuit.
Note Regarding Routable Data
Indications for the current rotating field and the information pertaining to the sampling-frequency tracking
can be found in Information routing under Power system → General in DIGSI 5. The indication
Freq.out
of oper.range
means that the frequency operating range has been exceeded. Either the frequency is out
of range (10 Hz to 80 Hz) or the input signals are too small for a manual update. Should this condition occur,
the system switches the update frequency to a sampling rate that corresponds to the rated frequency.
Furthermore, there are 2 additional measured frequency values available. The measured value
f sys
displays
the current system frequency, and the measured value
f track
displays the sampling frequency currently
set. Siemens recommends routing both measured values as fault-recording channel.
Application and Setting Notes for Measuring Point Current 1-Phase (I-1ph)
If you insert a Measuring point I 1-ph in DIGSI 5, you must route a current to the measuring point under
Name of the device → Measuring-points routing → Current-measuring points.
You can only route the current Ix.
Parameter: Rated primary current
•
Default setting (_:2311:101) Rated primary current = 1000 A
With the Rated primary current parameter, the active primary rated current of the current transformer
is set.
Parameter: Rated secondary current
•
Default setting (_:2311:102) Rated secondary current = 1 A
With the Rated secondary current parameter, you set the current secondary rated current of the current
transformer.
Parameter: Current range
•
Default setting (_:2311:103) Current range = 50 x IR
The Current range parameter allows you to set the dynamic range for the current input. Please retain the
default setting for power-system protection applications.
Parameter: Tracking
•
Default setting (_:2311:105) Tracking = active
With the parameter Tracking, you specify whether you would like to work with the sampling-frequency
tracking function.
Parameter Value
Description
active
If the parameter Tracking = active has been set, the measuring point
will be included when determining the sampling frequency.
Note: If the parameter Tracking = active, the determined sampling
frequency applies to all functions in the device not using fixed sampling
rates.
inactive
If the channels of the measuring point are not to be considered for deter-
mining the sampling frequency, please select the setting value inactive.
6.1.5
Protection and Automation Functions
6.1 Power-System Data
306 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
To Next Page
Loading...
