ABB REC650 Commissioning Manual

Also see for REC650 ANSI: Technical manual Manual Applications manual Product guide Applications manual

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ABB REC650 Commissioning Manual Manual pdf 90 page image

6.7.2.4 Checking the reclosing conditionsWhen checking the influence of a releasing condition it is suggested to first run asequence with the condition fulfilled. When the condition signal is removed, and anew sequence is run, it indicates that the result was due to the changed condition.In case of a blocking signal the procedure should be similar. Start without theblocking or inhibit signal, and then run a sequence with the blocking or inhibitsignal added.Checking the influence of the INHIBIT signal1. Check that the autorecloser function SMBRREC is operative, for example, bymaking a reclosing shot without the INHIBIT signal.2. Apply a fault and thereby a START signal. At the same time, or during theopen time, apply a signal to the input INHIBIT.3. Check that the reclosing sequence is interrupted and no reclosing takes place.Check closing onto a fault1. Check that the autorecloser function SMBRREC is operative, for example bymaking a reclosing shot.Keep the CBREADY signal high.2. Set the breaker simulating relay BR in Open position.3. Close the BR relay and apply immediately a fault and thereby a START signal.4. Check that no reclosing takes place.Checking the influence of CB not ready for reclosing1. Check that the autorecloser function SMBRREC is operative, for example bymaking a reclosing shot.Keep the CB simulator BR closed. Remove the CBREADY signal by openingSRY.2. Apply a fault and thereby a START signal.3. Check that no reclosing takes place.Checking the influence of synchronizing check (at three-phasereclosing)1. Check that the autorecloser function SMBRREC is operative, for example, bymaking a three-phase reclosing shot with the synchronizing check condition.Remove the SMBRREC signal.2. Apply a fault causing three-phase trip and thereby a START signal.3. Wait for the tSync time out limit.Check that no reclosing is made.Section 6 1MRK 511 248-UEN -Testing functionality82Commissioning Manual