Cantonellis
January 24, 2019, 02:53 PM
25. Undervoltage protection for a UPS should:
A- Inhibit the ATS
B- Open the AC input breaker
C- Start the generator
D- Open the inverter input breaker
Does anyone know the answer to this question? I thought they might be referring to DC Undervoltage to open the inverter input breaker (D) since one of the electrical tests for a UPS is: "Test dc undervoltage trip level on inverter input breaker" (NETA-ATS 7.222.2.B.4). According to testguy, that was not the correct answer.
A- Inhibit the ATS
B- Open the AC input breaker
C- Start the generator
D- Open the inverter input breaker
Does anyone know the answer to this question? I thought they might be referring to DC Undervoltage to open the inverter input breaker (D) since one of the electrical tests for a UPS is: "Test dc undervoltage trip level on inverter input breaker" (NETA-ATS 7.222.2.B.4). According to testguy, that was not the correct answer.