ABB module PCD231B 3HHE025541R0101 warehouse stock PLC module
Technical data of product parameters
The protection remains stable in the presence of power swings
and reversal of energy direction. Switching onto an existing fault PCD231B 3HHE025541R0101
results in instantaneous tripping of the circuit-breaker.
The distance function can also act as back-up protection for the
power transformer and neighbouring lines. Most of the logic
described in this Section (e.g. the transmission of signals) is not
used for these applications.indicates the c.t. input assigned to the neutral current (if fitted
and activated). This is used for the external acquisition of the
neutral current of the line. If the I0 input is not used, the
neutral current is derived from the phase currents.The user can determine in which subdirectory the distance
protection logic is located. The default name “DISTSTD” applies
when the standard distance protection logic located in the MMI
directory is usPCD231B 3HHE025541R0101ed. PCD231B 3HHE025541R0101
The input of a directory is only necessary when a special logic is
used instead of the standard one. The procedure in this case is
to be found in the description of the logic.Some of the signalling relay outputs remain excited until the entire distance protection function has reset (i.e. until ‘Start R+S+T’
resets) and others reset as soon as the particular condition disappears.
The parameter “EventRecFull” (event recorder full) enables a
choice to be made, whether all operation and reset events have
to be recorded in the event list (essential when the protection isThe first parameter in the sub-menu ‘General’ is ‘Ref length’
which is needed to indicate the distance to a fault in the event of
a trip, but otherwise bears no influence in the protection function.
The parameter gives the reactance of the reference length (in
secondary /ph per unit length) and may be defined in km,
miles, percent line length etcThe setting of the parameter ‘CT neutral’ depends on PCD231B 3HHE025541R0101
whether the star-point of the main c.t’s is on the line side or
the busbar side. There are thus two possible settings ‘Bus
side’ or ‘Line side’. The ‘Line side’ option is the one to
choose, providing the protection is connected according to
the wiring diagram in the appendix. This setting only
applies to the distance protection function. It does not
influence the power direction in all the other functions or
the displays of the A/D channels.
Product picture display
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