• START input is used when it is required to enable SOTF control immediately
after protection function indicates a fault.
• START_DLYD input is used when time delayed SOTF control enabling is
needed. In this case, the delay can be set with a Operate delay time setting.
SOTF control
The SOTF control is activated when CB_CL_CMD circuit breaker closing
command input is activated. The module is kept active until the set SOTF reset
time is exceeded after the CB_CL_CMD is deactivated. The OPERATE output is
activated when a fault indication signal is received from the Trigger module while
the SOTF control is still active.
5.6.5 Application
The CB_CL_CMD input activates CBRSOF. In the standard configuration, the
breaker close command should be connected to this input. The SOTF reset time
setting parameter is used for keeping CBRSOF active for a certain time after the
CB close command is executed.
The overcurrent high and instantaneous signals, for example, the PHIPTOC
START signal is connected to the function START input. When the SOTF control
module is active and the START input is activated, the function operates
instantaneously without any delays.
The overcurrent low stage signals, for example, PHLPTOC START signal is
connected to the function START_DLYD input. The setting parameter Operate
delay time is used to delay the operation in case of inrush situation.
5.6.6 Signals
Table 487: CBRSOF Input signals
Name
Type Default Description
START BOOLEAN 0=False Start from function to be accelerated by SOTF
START_DLYD BOOLEAN 0=False Start from function to be accelerated with delay
by SOTF
CB_CL_CMD BOOLEAN 0=False External enabling of SOTF by CB close command
BLOCK BOOLEAN 0=False Block of function
Table 488: CBRSOF Output signals
Name
Type Description
OPERATE BOOLEAN Operate
1YHT530004D05 D Section 5
Protection related functions
615 series 565
Technical Manual
To Next Page
Loading...
Need help?
General
