ABB REC650 Commissioning Manual

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Contents

ABB REC650 Commissioning Manual Manual pdf 69 page image

6. Check that the START signal resets.7. Instantaneously decrease the voltage in one phase to a value about 20% lowerthan the measured operate value.8. Measure the time delay for the TRIP signal, and compare it with the set value.Extended testing1. The test above can now be repeated for step 2.2. The tests above can be repeated for 2 out of 3 and for 3 out of 3 operation mode.3. The tests above can be repeated to check security, that is, the START andoperate signals, that are not supposed to appear, - do not.4. The tests above can be repeated to check the time to reset.5. The tests above can be repeated to test the inverse time characteristic.6.4.1.2 Completing the testContinue to test another function or end the testing by setting the parameterTestMode to Off under Main menu/Tests/IED test mode/1:TESTMODE. Ifanother function is tested, then set the parameter Blocked to No under Main menu/Tests/Function test modes/Voltage/UV2PTUV(27,2U<)/1:UV2PTUV for thefunction, or for each individual function in a chain, to be tested next. Remember toset the parameter Blocked to Yes, for each individual function that has been tested.6.4.2 Two step overvoltage protection OV2PTOVPrepare the IED for verification of settings as outlined in 5.1 "Preparing the IED toverify settings".Values of the logical signals for OV2PTOV are available on the local HMI underMain menu/Tests/Function status/Voltage/OV2PTOV(59,2U>)/1:OV2PTOV.The Signal Monitoring in PCM600 shows the same signals that are available on thelocal HMI.6.4.2.1 Verifying the settings1. Apply single-phase voltage below the set value U1>.2. Slowly increase the voltage until the ST1 signal appears.3. Note the operate value and compare it with the set value.4. Switch the applied voltage off.5. Set and apply about 20% higher voltage than the measured operate value forone phase.6. Measure the time delay for the TR1 signal and compare it with the set value.7. Repeat the test for step 2.1MRK 511 248-UEN - Section 6Testing functionality61Commissioning Manual