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TESTBOY TV 450 Testing RCD Displayed results: x1 ........Step 1 trip-out time ( , IΔN, 0º), , IΔN, 180º), x1 ........Step 2 trip-out time ( x5 ........Step 3 trip-out time ( , 5×IΔN, 0º), x5 ........Step 4 trip-out time ( , 5×IΔN, 180º), , ½×IΔN, 0º), x½ .......Step 5 trip-out time ( x½ .......Step 6 trip-out time ( , ½×IΔN, 180º), I .........Step 7 trip-out current (0º), I .........Step 8 trip-out current (180º), Uc........Contact voltage for rated IΔN. Notes: The autotest sequence is immediately stopped if any incorrect condition is detected, e.g. excessive Uc or trip-out time out of bounds. Auto test is finished without x5 tests in case of testing the RCD type A with rated residual currents of IΔn = 300 mA, 500 mA, and 1000 mA. In this case auto test result passes if all other results pass, and indications for x5 are omitted. Tests for sensitivity (IΔ, steps 7 and 8) are omitted for selective type RCD. 42
