ABB Relion REG670, Technical Manual

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14.3.7.4 Settings
Table 413: SXCBR Non group settings (basic)
Name Values (Range) Unit Step Default Description
tStartMove 0.000 - 60.000 s 0.001 0.100 Supervision time for the apparatus to
move after a command
tIntermediate 0.000 - 60.000 s 0.001 0.150 Allowed time for intermediate position
AdaptivePulse Not adaptive
Adaptive
- - Not adaptive Output resets when a new correct end
position is reached
tOpenPulse 0.000 - 60.000 s 0.001 0.200 Output pulse length for open command
tClosePulse 0.000 - 60.000 s 0.001 0.200 Output pulse length for close command
InitialCount 0 - 20000 - 1 0 Initial number of operations (Initial count
value)
14.3.7.5 Operation principle
The Circuit breaker function (SXCBR) is used by other functions such as for example,
switch controller, protection functions, autorecloser function or an IEC 61850 client
residing in another IED or the operator place. This switch function executes
commands, evaluates block conditions and evaluates different time supervision
conditions. Only if all conditions indicate a switch operation to be allowed, the
function performs the execution command. In case of erroneous conditions, the
function indicates an appropriate "cause" value, see Table
397 .
SXCBR has an operation counter for closing and opening commands. The counter
value can be read remotely from the operator place. The value is reset from local HMI,
a binary input or remotely from the operator place by configuring a signal from the
Single Point Generic Control 8 signals (SPC8GAPC) for example. The health of the
external equipment, the switch, can be monitored according to IEC 61850-8-1. The
operation counter functionality and the external equipment health supervision are
independent sub-functions of the circuit breaker function.
Local/Remote switch
One binary input signal LR_SWI is included in SXCBR to indicate the local/remote
switch position from switchyard provided via the I/O board. If this signal is set to
TRUE it means that change of position is allowed only from switchyard level. If the
signal is set to FALSE it means that command from IED or higher level is permitted.
When the signal is set to TRUE all commands (for change of position) are rejected,
even trip commands from protection functions are rejected. The functionality of the
local/remote switch is described in Figure
341 .
1MRK502052-UEN B
Section 14
Control
725
Technical manual