CHAPTER 11: APPLICATION EXAMPLES 11.2 EXAMPLE 2: TOC PROTECTION & RECLOSING SETTINGS
GEK-106310-AF F650 DIGITAL BAY CONTROLLER 11-7
The holding time for reclosing conditions can be very low since the processor internal time to check them is
instantaneously if they are present at this moment. Depending in the application reclosing conditions might come later
especially when commands are sent from dispatching center. If does then this timing must be set properly.
The F650 trip contact over-travel is the time the contact remains closed for some definite time to assure the tripping action
of the breaker, specially in CB’s with large tripping times (bulk or other CB’s). This time delay has been set in group
SETPOINT CONTROL ELEMENTS INPUTS/OUTPUTS BOARD F
To test the reclosing scheme one current and two voltages signals equipment with phase and frequency shifting capability
must be used. The current source must be switched OFF and ON in the time ranges described in the scheme
Figure 11-1: F650 tripping and reclosing scheme
To Next Page
Loading...