ABB REC650 Commissioning Manual

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ABB REC650 Commissioning Manual Manual pdf 89 page image

If that is not possible, other means of time measurement and recording shouldbe arranged.6.7.2.2 Switching the autorecloser function toOn andOff1. Set the Operation setting to Off and check the state.2. Set the Operation setting to On and check the state, including SETON andREADY.The CB should be closed and ready.3. If external control Off/On is connected, check that it works.Set Operation to ExternalCtrl and use that control to switch On and Off, andcheck the state of the function.6.7.2.3 Verifying the autorecloser function SMBRRECSelect the test cases to be run according to what is applicable to the particularapplication. It can be, for example, three-phase single-shot reclosing or two-shotreclosing. Below, a case with three-phase single-shot reclosing is described.1. Set Operation = On.2. If the autorecloser function SMBRREC is not to be operated, ensure that theSMBRREC input is activated. If SMBRREC is to be included, ensure that itis supplied with the appropriate AC quantities.3. Simulate CB closed position by closing switch SC to make the BR relay start.4. Simulate CBREADY by closing the switch SRY, and leave it closed.5. Inject AC quantities to give a trip to the BR and to the START input.Observe and preferably record the operation. The BR relay shall trip andreclose (start). After reclosing, the SRY switch can be opened for about 5sand then closed again.The autoreclosing open time and the sequence should be checked, forexample in the event recording. Check also the operation indications(disturbance report) and the operation counters on the local HMI under Mainmenu/Tests/Function status/SMBRREC(79,0->1)/1:SMBRRECShould the operation not be as expected, this should be investigated. It couldbe caused by an inappropriate setting or missing condition such asCBREADY (or SMBRREC at three-phase reclosing).6. Repeat the sequence by simulating a permanent fault.Shortly after the reclosing shot, a new fault is applied. If a single-shotreclosing program is selected, there shall be one reclosing operation and thenblocking of SMBRREC for the set Reclaim time.Before a new reclosing sequence can be run, the CBREADY and CBPOS(CB closed) must be set manually.1MRK 511 248-UEN - Section 6Testing functionality81Commissioning Manual