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NEW QUESTION # 32
During wizard startup, when you enter the screen for selecting commissioning items for the first time, all items are selected by default. Which item is mandatory. You can deselect other commissioning items that are not mandatory.
Answer: B
Explanation:
In Huawei precision cooling commissioning, the wizard groups functional commissioning items so technicians can validate key subsystems efficiently. Thecooling system commissioningis mandatory because it verifies the primary control and protection loop that directly determines whether the unit can safely provide cooling capacity. This includes confirming the refrigeration or chilled-water cooling path can start and stop correctly, sensors and control logic are valid, and protection conditions (such as abnormal pressures
/temperatures, flow conditions, or interlocks) behave as expected. Without completing cooling-system commissioning, the unit's core purpose-stable temperature control for IT loads-cannot be assured, and the controller cannot reliably judge normal versus fault states during operation.
Other items (indoor fans, condensate pump, humidifier) are important butscenario-dependent: some sites do not use humidification, some drainage designs do not require an internal condensate pump, and fan checks can be handled as part of broader functional tests or may vary by redundancy configuration. Therefore, the wizard allows non-mandatory items to be deselected, but the cooling system commissioning must remain selected to complete a valid baseline commissioning workflow.
NEW QUESTION # 33
If a component runtime overdue alarm is generated for an air conditioner, you can clear the device running time on the "Maint > Performance Maintenance" screen.
Answer: B
Explanation:
Huawei smart cooling/precision air-conditioning controllers manage preventive maintenance by trackingaccumulated runtimefor wear components such as indoor fans, compressors (where applicable), humidifiers, and pumps. When a component reaches its configured maintenance interval, the controller generates aruntime overdue alarmto remind O&M staff to inspect, service, or replace the component. After the required maintenance action is completed (for example, fan replacement, bearing inspection, cleaning, or pump servicing), the accumulated runtime record must becleared/resetso the next maintenance cycle can be measured correctly from zero. The controller provides this function under the maintenance feature set because it is part of lifecycle management and performance tracking rather than an alarm acknowledgement. The navigation pathMaint > Performance Maintenanceis used to access runtime statistics and to clear the corresponding device/component running time after maintenance. This avoids repeated overdue alarms for a component that has already been serviced and ensures future alarms accurately reflect the operating hours of the newly serviced or replaced parts, improving reliability and maintenance planning accuracy.
NEW QUESTION # 34
During wizard startup, when you enter the screen for selecting commissioning items for the first time, all items are selected by default. Which item is mandatory. You can deselect other commissioning items that are not mandatory.
Answer: B
Explanation:
In Huawei precision cooling commissioning, the wizard groups functional commissioning items so technicians can validate key subsystems efficiently. The cooling system commissioning is mandatory because it verifies the primary control and protection loop that directly determines whether the unit can safely provide cooling capacity. This includes confirming the refrigeration or chilled-water cooling path can start and stop correctly, sensors and control logic are valid, and protection conditions (such as abnormal pressures/temperatures, flow conditions, or interlocks) behave as expected. Without completing cooling-system commissioning, the unit's core purpose-- stable temperature control for IT loads--cannot be assured, and the controller cannot reliably judge normal versus fault states during operation.
NEW QUESTION # 35
The maintenance bypass switch cannot be turned on when the UPS5000-H works in normal mode.
Answer: B
Explanation:
In UPS5000-H operation,normal modemeans the load is supplied by theinverter, and the rectifier/charger maintains the DC link and batteries. Themaintenance bypass switch(maintenance bypass breaker) is a mechanical isolation path intended to keep the load powered while the UPS is taken out of service for inspection or repair. Because it changes the power path and can create unsafe or unintended parallel paths if operated incorrectly, it isnot permitted to simply close the maintenance bypass switch while the UPS is in normal mode. The correct O&M logic is to perform acontrolled transferfirst (typically transferring the load tostatic bypasswith proper synchronization and confirmation that bypass power is healthy), and only then close the maintenance bypass switch so the UPS can be safely isolated. This prevents disturbance to the load, avoids synchronization/transfer hazards, and protects personnel from incorrect switching operations.
Therefore, the statement is true in the sense of standard UPS5000-H operating procedure and safety interlock intent.
NEW QUESTION # 36
After the battery module is installed, the torque and insulation should be checked according to the specified requirements.
Answer: B
Explanation:
This statement is true because post-installation verification is a mandatory acceptance step for battery systems in data centers. After a battery module is installed,torque verificationensures that all power terminals, interconnect bars, and grounding points meet the specified tightening requirements. If torque is too low, contact resistance increases, which can cause abnormal heating, voltage drop, nuisance alarms, and even connector damage during high current charge/discharge. If torque is too high, threads, lugs, or busbars can be damaged, creating hidden reliability risks.Insulation testingconfirms that the battery circuit has no unintended leakage paths to chassis or ground and that cable routing, connector seating, and protective covers are correct.
This is especially important for lithium battery cabinets where high DC voltage and large fault current capability demand strict electrical isolation. Performing torque and insulation checks after installation reduces early-life faults, improves safety, and ensures the cabinet can pass commissioning tests and enter stable service under UPS charge/discharge control.
NEW QUESTION # 37
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