Switch controller (SCSWI)
The parameter CtlModel specifies the type of control model according to IEC 61850.
For normal control of circuit breakers, disconnectors and grounding switches the
control model is set to SBO Enh (Select-Before-Operate) with enhanced security.
When the operation shall be performed in one step, the model direct control with
normal security is used.
At control with enhanced security there is an additional supervision of the status value
by the control object, which means that each command sequence must be terminated
by a termination command.
The parameter PosDependent gives permission to operate depending on the position
indication, that is, at Always permitted it is always permitted to operate independent of
the value of the position. At Not perm at 00/11 it is not permitted to operate if the
position is in bad or intermediate state.
tSelect is the maximum time between the select and the execute command signal, that
is, the time the operator has to perform the command execution after the selection of
the object to operate. When the time has expired, the selected output signal is set to
false and a cause-code is given over IEC 61850.
The time parameter tResResponse is the allowed time from reservation request to the
feedback reservation granted from all bays involved in the reservation function. When
the time has expired, the control function is reset.
tSynchrocheck is the allowed time for the synchronism check function to fulfill the
close conditions. When the time has expired, the control function is reset.
The timer tSynchronizing supervises that the signal synchronizing in progress is
obtained in SCSWI after start of the synchronizing function. The start signal for the
synchronizing is obtained if the synchronism check conditions are not fulfilled. When
the time has expired, the control function is reset. If no synchronizing function is
included, the time is set to 0, which means no start of the synchronizing function.
tExecutionFB is the maximum time between the execute command signal and the
command termination. When the time has expired, the control function is reset.
tPoleDiscord is the allowed time to have discrepancy between the poles at control of
three single-phase breakers. At discrepancy an output signal is activated to be used for
trip or alarm.
Switch (SXCBR/SXSWI)
tStartMove is the supervision time for the apparatus to start moving after a command
execution. When the time has expired, the switch function is reset.
Section 3 1MRK504116-UUS C
IED application
612
Application manual
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