ABB RELION REC650 Commissioning Manual

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ABB RELION REC650 Commissioning Manual Manual pdf 62 page image

8.2 Activating the test mode M11412-2 v14Put the IED into the test mode before testing. The test mode blocks all protectionfunctions and some of the control functions in the IED, and the individual functionsto be tested can be unblocked to prevent unwanted operation caused by otherfunctions. In this way, it is possible to test slower back-up measuring functionswithout the interference from faster measuring functions. The test switch shouldthen be connected to the IED.Test mode is indicated when the yellow StartLEDflashes.It is important that the IED function to be tested is put into test mode, even if theMU is sending data marked as "test". The IED will interpret these data as valid if itis not in test mode.1. Browse to the TESTMODE menu and press E.The TESTMODE menu is found on the local HMI under Main menu/Test/IED test mode/TESTMODE2. Use the up and down arrows to choose On and press E.3. Press the left arrow to exit the menu.The dialog box Save changes appears.4. Choose Yes, press E and exit the menu.The yellow startLED above the LCD will start flashing when the IED is intest mode.8.3 Preparing the connection to the test equipment M11743-2 v8The IED can be equipped with a test switch of type RTXP8, RTXP18 or RTXP24.The test switch and its associated test plug handle (RTXH8, RTXH18 or RTXH24)are a part of the COMBITEST system, which provides secure and convenienttesting of the IED.When using the COMBITEST, preparations for testing are automatically carriedout in the proper sequence, that is, for example, blocking of tripping circuits, shortcircuiting of CTs, opening of voltage circuits, making IED terminals available forsecondary injection. Terminals 1 and 8, 1 and 18 as well as 1 and 12 of the testswitches RTXP8, RTXP18 and RTXP24 respectively are not disconnected as theysupply DC power to the protection IED.The RTXH test-plug handle leads may be connected to any type of test equipmentor instrument. When a number of protection IEDs of the same type are tested, thetest-plug handle only needs to be moved from the test switch of one protection IEDto the test switch of the other, without altering the previous connections.Use COMBITEST test system to prevent unwanted tripping when the handle iswithdrawn, since latches on the handle secure it in the half withdrawn position. Inthis position, all voltages and currents are restored and any re-energizing transientsSection 8 1MRK 511 425-UEN ATesting IED operation56 Bay control REC650 2.2 IECCommissioning manual