Huawei
H12-425_V2.0 · Question #448
The power system of a UPS2000-4G-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…
The correct answer is A. The wing modes incorrect if the upstream mains input switch is turned on the UPS will be short-circuited. See the full explanation below for the reasoning.
Question
The power system of a UPS2000-4G-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?
Options
- AThe wing modes incorrect if the upstream mains input switch is turned on the UPS will be short-circuited
- BThe wiring mode is correct. The UPS can start properly.
- CThe wing mode is incorrect. The UPS cannot wort in battery mode but can still work in bypass mode or
- DThe wing modes incorrect. The correct wing mode should be single-phase bypass input three-phase
How the community answered
(37 responses)- A78% (29)
- B8% (3)
- C3% (1)
- D11% (4)
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