10.9.2 Autorecloser for 1/2/3-phase operation SMBRRECVerification of the Autorecloser for 1/2/3-phase operation function SMBRREC forsingle-phase, two-phase or three-phase reclosing attempts can be considered toconsist of two parts.• One part to verify the internal logic and timing of the function• One part to verify its interaction with the protection systemThis section deals with verification of SMBRREC itself. However, it is practical tostart SMBRREC by activating a protection function, for example, by secondaryinjection tests.Prepare the IED for verification of settings outlined in section "Preparing the IED toverify settings".The purpose of verification before commissioning is to check that entered selections,setting parameters and configuration render the intended result. The function isflexible with many options and facilities. At commissioning only the selections andsettings intended for use are verified. If one chooses to reduce some time settings inorder to speed up verification, be careful to set the parameters at intended operationalvalues at the end of the verification procedure. One such parameter is the tReclaimtime that must be timed out before a new test sequence can be performed.The verification test is performed together with protection and trip functions.Figure 25 illustrates a suggested testing arrangement, where the circuit-breaker (CB)is simulated by an external bi-stable relay (BR), for example a relay type RXMVB2or RXMD or Breaker Simulator of ABB. The following manual switches are used:• Switch or push-button to close (SC)• Switch or push-button to trip (ST)• Switch for CB ready condition (SRY)If no bi-stable relay or breaker simulator is available, replace it with two self-resetauxiliary relays and use a self-holding connection.Use a secondary injection IED test set to operate the protection function. The test setshall be switched off when a trip signal is given or when the BR comes to open positionto simulate real conditions.The CB simulation can be made more elaborate, including simulation of the operatinggear condition, CBREADY of either the type ready for a Close-Open (CO) cycle, orthe type ready for an Open-Close -Open (OCO) cycle.The CB condition CBREADY of a type, CO, shall be high (true) until a closingoperation is performed. It then goes low (false) for a recharging time of about 5 - 10s.After that it is high again.A CB condition CBREADY of a type, OCO shall be high (true) before and duringtripping (Start reclosing). During tripping it goes low for a recharging time, forSection 10 1MRK 511 360-UEN ATesting functionality by secondary injection150 Bay control REC670 2.1 IECCommissioning manual
