CHAPTER 6: COMMISSIONING 6.15 OVERVOLTAGE ELEMENTS (59P, 59X, 59NH, 59NL, 47)GEK-113000-AF F650 DIGITAL BAY CONTROLLER 6-196.15.3 59NH and 59NL elementsSet the relay as followsApply voltage as indicated on the table under the overvoltage setting level and verify that the relay does not trip.Verify that the relay trips for the set voltage (with an admissible error of 5%).This element can also be tested by applying only phase voltages. For this purpose, it is necessary to set Auxiliary Voltage =VX. In this condition, Vn voltage is calculated as a sum of the phase voltages.6.15.4 47 element - Neg Seq OVSet the relay as follows:Apply voltage as indicated on the table under the overvoltage setting level and verify that the relay does not trip.Verify that the relay trips for the set voltage (with an admissible error of 5%).GENERAL SETTINGSAuxiliary Voltage VNNEUTRAL OV HIGH/LOW (59NH/59NL)Function ENABLEDPickup Level 120 VTrip Delay 2.00Reset Delay 0.00Elements Input Pickup Level(volts)Trip Delay(seconds)Applied Voltage (V) Tripping time (s)EXPECTED Admissible59NH/59NL VX 120 2 114 NO TRIP NA132 2 [1.9–2.1 ]132 2 [1.9 – 2.1]NEG SEQ OV (47)Function ENABLEDPickup Level 50 VTrip Delay 2.00Reset Delay 0.00CHANNEL Applied Voltage (V) Angle Tripping time (s)EXPECTED AdmissibleVI 65 0º NO TRIP NAVII 65 120ºVIII 65 240ºVI 55 0º 2 [1.9–2.1]VII 55 240ºVIII 55 120ºVI 45 0º NO TRIP NAVII 45 240ºVIII 45 120º
