Section 4 Analog inputs
4.1 Introduction
SEMOD55003-5 v11
Analog input channels must be configured and set properly in order to get correct
measurement results and correct protection operations.
For power measuring, all
directional and differential functions, the directions of the input currents must be
defined in order to reflect the way the current transformers are installed/connected
in the field ( primary and secondary connections ). Measuring and protection
algorithms in the IED use primary system quantities. Setting values are in primary
quantities as well and it is important to set the data about the connected current and
voltage transformers properly.
Under the Logical Node AISVBAS, the TRM channel for phase angle reference
PhaseAngleRef can be defined to facilitate service values reading. This TRM
channel's phase angle will always be forced to zero degrees and remaining analog
channel's phase angle information will be shown in relation to this channel. During
testing and commissioning of the IED, the reference channel can be changed to
facilitate testing and service values reading.
The IED has the ability to receive analog values from primary
equipment, that are sampled by Merging units (MU) connected to a
process bus, via the IEC 61850-9-2 LE protocol.
In RER670 7I+5U TRM is always used. However several variants
exist in order to cover 1A and/or 5A main CTs.
4.2
Setting guidelines
SEMOD55068-1 v1
SEMOD130348-4 v4
The available setting parameters related to analog inputs are
depending on the actual hardware (TRM) and the logic
configuration made in PCM600.
1MRK 506 375-UEN A Section 4
Analog inputs
Railway application RER670 2.2 IEC 43
Application manual
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