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NEW QUESTION # 62
A UPS2000-G-15K at a certain location has a three-phase input and a single-phase output. After installation, it was found that the main bypass input was three-phase, the output was single- phase, and the main and bypass were from the same source. Which of the following descriptions of the wiring method of the UPS are correct? (Multiple choice)
- A. This wiring method is wrong, which will cause the UPS to not work in battery mode, but can still work in bypass mode and inverter mode
- B. The wiring method is wrong. If the front-end AC input switch is closed, the UPS will be damaged by short circuit immediately.
- C. The wiring method is correct and the UPS can start normally.
- D. This wiring method is wrong. The correct wiring method should be that the bypass input is single- phase, the main input is three-phase, and the main and bypass are of the same source.
Answer: C,D
NEW QUESTION # 63
In Huawei's dynamic environment monitoring system, it is at the data collection layer and can integrate the underlying components ____________ . The equipment through which information is transmitted to the monitoring software is ____________ .
Answer:
Explanation:
UPS,Air conditioner etc , ECC800
NEW QUESTION # 64
In an air conditioning system, which of the following uses water cooling or air cooling to cool the high- temperature and high-pressure gas discharged from the compressor and release the heat to the outside?
- A. Compressor
- B. Expansion valve
- C. Evaporator
- D. Condenser
Answer: D
NEW QUESTION # 65
What is the maximum capacity of the power module of UPS5000-E?
- A. 20kVA
- B. 50kVA
- C. 30kVA
- D. 40kVA
Answer: B
NEW QUESTION # 66
The main fire extinguishing agent used in the data center fire protection system is ____________ .
Answer:
Explanation:
heptafluoropropane
NEW QUESTION # 67
Regarding the overload capacity of UPS5000-E, which of the following statements is correct?
(Multiple choice)
- A. Bypass 135% overload long-term operation
- B. Bypass 135% overload for 120 minutes
- C. Inverter 110% overload for 60 minutes
- D. Inverter 110% overload for 120 minutes
Answer: A,C
NEW QUESTION # 68
In the data center room, the lower the relative humidity of the air, the better.
- A. False
- B. True
Answer: A
NEW QUESTION # 69
On the panel of the air conditioner unit, in the group control topology diagram, the difference between this unit and other units is that there is a green border
- A. True
- B. False
Answer: A
NEW QUESTION # 70
After the current of the leakage current protector exceeds the specified value for a period of time, the heat generated by itself causes the fuse to melt, thereby disconnecting the circuit.
- A. False
- B. True
Answer: A
NEW QUESTION # 71
In air-cooled precision air conditioners, the function of the solenoid valve is to prevent refrigerant migration, optimize control, and protect the compressor.
- A. True
- B. False
Answer: A
NEW QUESTION # 72
Which of the following devices can be used to store video recordings for a long time?
- A. Switch
- B. AC Actuator
- C. NVR
- D. UPS
Answer: C
NEW QUESTION # 73
() can work normally in the main circuit inverter state.
Answer:
Explanation:
-280V, 40-70HZ
NEW QUESTION # 74
FM800 has the function of automatic start-up when receiving a call for civil air conditioner
- A. True
- B. False
Answer: A
NEW QUESTION # 75
Which of the following is correct about the upward supply and downward return air supply method?
- A. None
- B. The air supply outlet is located at the upper part of the air-conditioned room, and the air return outlet is located at the lower part of the air-conditioned room.
Answer: B
NEW QUESTION # 76
A circuit has two isolating switches and a molded case circuit breaker combination to control the on and off of the circuit. Therefore, when power is supplied, first close the isolating switch on the power supply side, then close the isolating switch on the load side, and finally close the circuit breaker.
- A. True
- B. False
Answer: A
NEW QUESTION # 77
The automatic fire alarm control system should be linked with the gas fire extinguishing control system and video surveillance system.
- A. True
- B. False
Answer: A
NEW QUESTION # 78
The capacity of a UPS is 200KVA and its output power factor is 0.9, so it can drive a maximum of () loads.
Answer:
Explanation:
180KW
NEW QUESTION # 79
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Huawei H12-411_V2.0 certification exam is intended for IT professionals who have a strong foundation in data center facility design and operations. Candidates who pass the exam are awarded the HCIA-Data Center Facility V2.0 certification, which demonstrates their proficiency in managing and maintaining data center facilities.
Huawei H12-411_V2.0 (HCIA-Data Center Facility V2.0) Certification Exam is a valuable certification for IT professionals who work in the field of data center facility management. By passing H12-411_V2.0 exam, candidates will gain a deep understanding of the various aspects of data center facility management and will be able to apply this knowledge in real-world scenarios. With the help of study guides, practice exams, and training courses, candidates can prepare for H12-411_V2.0 exam and achieve certification.
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