ABB REJ 525 Operator's Manual

ABB REJ 525 Operator's Manual Manual pdf 27 page image

1MRS 752137-MUM Combined Overcurrent and Earth-Fault RelayOperator’s ManualREJ 52527The table below shows the activation order and the corresponding digit flashingwhen a signal is being tested.5.2.2. Binary input testTo monitor the status of the binary input, navigate in the HMI menu as follows:1. Select “FUNCTION TEST/BI” under “CONFIGURATION” in the main menu.2. Select “BI STATUS” and the state of the binary input will be shown.It is also possible to read the state of the binary input via SPA parameter I5.5.2.3. LED testThe LED test is accessible via “FUNCTION TEST/BI” under“CONFIGURATION” in the HMI menu. All the LEDs not already lit can be lit inthe test mode.1. Enter the test mode by pressing the [E] button and the text “LED-TEST” will beflashed on the display.2. To activate the LEDs not already lit, press the [E] button. The LEDs will remainlit for as long as the [E] button remains pressed.3. To quit the test mode, press the [C] button.The LED test can also be performed using SPA parameter V166.5.3. Secondary injection testingWhen the auxiliary voltage is connected to the protection relay, it will perform aself-testing program. This, however, does not include the matching transformers andthe output contacts. The operational condition of the relay is tested by means ofordinary relay test equipment. Such a test also includes the matching transformers,output contacts and the accuracy of the operate values.According to the manufacturer’s recommendations, the relay should be submitted tosecondary testing at five years’ intervals to ensure proper operation. The testingshould include the entire protection chain from the measuring transformers andshould always be performed in accordance with national regulations andinstructions.Table 5.2.1-1 Function testNumber Function1 I>2 t>3 I>>4 t>>5 I 0 >6 t 0 >7 I 0 >>8 t 0 >>9 ∆I>10 t∆>0 IRF