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Question 43 - H12-425_V2.0 discussion

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The power system of a UPS2000-G-15K at a site is three-phase input and single-phase output. After installation, it is found that the mains and bypass inputs are three-phase, the output is single-phase, and the mains and bypass inputs share a power source. Which of the following statements are true about the UPS wiring mode?

A.
The wiring mode is incorrect, if the upstream mains input switch is turned on, the UPS will be short-circuited and damaged immediately.
Answers
A.
The wiring mode is incorrect, if the upstream mains input switch is turned on, the UPS will be short-circuited and damaged immediately.
B.
The wiring mode is correct. The UPS can start properly.
Answers
B.
The wiring mode is correct. The UPS can start properly.
C.
The wiring mode is incorrect. The UPS cannot work in battery mode, but can still work in bypass mode or inverter mode.
Answers
C.
The wiring mode is incorrect. The UPS cannot work in battery mode, but can still work in bypass mode or inverter mode.
D.
The wiring mode is incorrect. The correct wiring mode should be single-phase bypass input, three-phase mains input, and one power source.
Answers
D.
The wiring mode is incorrect. The correct wiring mode should be single-phase bypass input, three-phase mains input, and one power source.
Suggested answer: A
asked 18/09/2024
Gianni Masaracchia
43 questions
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