Online Access Free H19-402_V1.0 Exam Questions

Water-cooled air conditioners and chilled water air conditioners are the same refrigeration system

• A.False
• B.True

Huawei 25KW half cabinet variable frequency air-cooled air conditioner, which of the following description is correct? (Multiple choice)

• A.The capacity calculation of a single air conditioner with UPS is 1.21.732 full load current 3800.8/0.9
• B.If a group of air conditioners is connected to a UPS system, then the capacity requirement of a single UPS system should be multiplied by the number of air conditioners running simultaneously. For example, if there is a 5+1 cold backup configuration, the capacity requirement of a single air conditioner UPS system should be
• C.The UPS capacity requirement for a single air conditioner is 15.8kVA. If UPS5000E is used, at least one 25kVA power module is required.
• D.The UPS capacity requirement for a single air conditioner is 79.0kVA. If UPS5000E is used, at least two 40kVA power modules are required.
• E.The capacity calculation of a single air conditioner with UPS is 1.251.732 full load current 380*0.8/0.9

Which of the following is the UPS used by FusionPower (prefabricated power module)?

• A.UPS5000-E
• B.PS5000-s
• C.UPS5000-A
• D.UPS5000-H

Regarding fluorine pump type energy-saving air conditioning products, which of the following statements is correct? (Multiple choice)

• A.Currently, the main users are operator pilot computer rooms and enterprise computer rooms with energy-saving innovation budgets. It has not yet formed large-scale applications and is still waiting for field testing.
• B.In autumn, winter and spring, the compressor is not turned on or turned on less frequently, and indirect natural cooling is used for energy-saving operation, but it does not necessarily reduce OPEX.
  Because the maintenance work and difficulty of maintenance are increasing simultaneously
• C.Fluorine pumps have a high reliability risk and are easily damaged by cavitation (gaseous refrigerant exists near the blades).
• D.There is no professional pump supplier for fluorine pumps. Most of them are provided by water pump manufacturers. The technology is immature and lacks professional technical support.
• E.In most areas of China, the TCO advantage is not obvious because the winter temperature is not low enough. It generally takes 5 to 8 years to recover the investment, which is not economical.

The domestic power supply standard is 380v/50Hz.

• A.False
• B.True