Free H20-923_V1.0 Exam Files Downloaded Instantly 100% Dumps & Practice Exam
Free Exam Updates H20-923_V1.0 dumps with test Engine Practice
NEW QUESTION # 20
When a critical alarm is generated in a lithium battery cabinet and the buzzer beeps continuously, the status of the indicator on the MDU is
- A. Blinking red fast
- B. Steady yellow
- C. Blinking yellow fast
- D. Steady red
Answer: A
Explanation:
In Huawei lithium battery cabinet alarm design, the MDU indicator and buzzer are coordinated to help O&M personnel immediately judge alarm severity without logging into a management system. Acritical alarmindicates that the battery system may no longer be in a fully safe or supported operating state and requires urgent handling, such as load protection actions, isolation, or immediate inspection. For this highest severity level, the cabinet uses the most prominent visual pattern:red with fast blinking, paired with acontinuous buzzer, to ensure the condition cannot be overlooked in an equipment room environment. Yellow indicators are reserved for lower severities such as warnings or minor/major alarms, where the system remains controllable and the required response can be scheduled. A steady red is typically used to indicate a persistent fault state or stop condition, whereasfast blinking red + continuous buzzeris the clear "critical, urgent" combination that triggers immediate on-site response and rapid fault localization (such as checking protection events, contactor status, temperature/voltage exceptions, and isolation conditions).
NEW QUESTION # 21
Operators can view parameters and set parameters on the "User Settings" and "Comm Settings" menus.
- A. True
- B. False
Answer: A
Explanation:
On Huawei data center cooling/monitoring controllers, menu permissions are typically organized so that routine O&M staff (operator role) can perform day-to-day adjustments that are required for normal running and integration, without accessing factory-only commissioning items. TheUser Settingsmenu is designed for operational configuration such as target temperature/humidity setpoints, control preferences, and other user- level parameters that need to be tuned to match the data hall environment and load changes. TheComm Settingsmenu is intended for communication configuration used in site integration, such as setting communication addresses, baud rates, protocol-related parameters, or enabling interfaces needed for upper- layer systems (for example, monitoring platforms). These settings are considered part of normal operation management and must be accessible so operators can maintain monitoring connectivity, replace controllers, or restore communication after changes. Higher-risk parameters (for example, factory calibration, protected control logic, or deep commissioning values) are normally restricted to higher privilege roles, but viewing and setting parameters withinUser SettingsandComm Settingsis an operator-allowed function.
NEW QUESTION # 22
The maintenance bypass switch cannot be turned on when the UPS5000-H works in normal mode.
- A. True
- B. False
Answer: A
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 # 23
What is the upstream input voltage range of the UPS5000-H?
- A. 380 V-415 V
- B. 220 V-240 V
- C. 360 V-600 V
- D. 138 V-485 V
Answer: D
Explanation:
For the Huawei UPS5000-H (380/400/415 V class), "upstream input voltage range" refers to the acceptableAC mains (rectifier) line-to-line input voltage windowthat the UPS can tolerate while maintaining operation. Huawei specifies a wide mains input voltage range of138-485 Vac (line voltage)to improve adaptability to weak or fluctuating power grids and to reduce unnecessary battery usage when the utility voltage sags or rises within allowable limits. Within this overall window, the UPS may applyderating rulesat lower voltages (for example, full-load operation is typically guaranteed only above a higher threshold), but the upstream input can still remain connected and the UPS continues supplying the load according to its control strategy and available capacity. The other options do not match the upstream AC input range:360-600 Vis commonly associated withbattery DC voltage ranges,220-240 Vis single-phase class, and380-415 Vrepresentsrated voltage, not the full acceptable upstream range.
NEW QUESTION # 24
The software installation package does not need to be downloaded for the preinstalled server.
- A. True
- B. False
Answer: A
Explanation:
In Huawei delivery scenarios, apreinstalled servermeans the target software (for example, the NetEco platform and its required runtime components) has already been deployed and integrated on the server image before it is handed over for on-site commissioning. Because the installation media has already been applied, the on-site engineer's work typically shifts from "software installation" to "environment verification and initialization," such as confirming OS/service status, checking resource allocation, validating database and middleware health, verifying network planning (IP, gateway, DNS/NTP as required), and completing application-level initialization (site creation, user/role configuration, northbound interface settings, and device
/model import if needed). In this case,downloading the full installation package is not a mandatory stepfor commissioning, because the package is mainly required when performing a fresh installation or reinstall
/upgrade. However, standard practice is still to prepare supporting materials (patches, licenses, and compatibility documents) and ensure the preinstalled version matches the project baseline before acceptance.
NEW QUESTION # 25
When the mains supply is stable, the UPS5000-H mainly works in which mode after ECO is configured?
- A. Maintenance bypass
- B. Normal
- C. Static bypass
- D. Battery
Answer: C
Explanation:
After ECO mode is enabled on the UPS5000-H, the system's control objective changes from "always supply the load through the inverter" to "maximize efficiency while keeping protection mechanisms ready." When themains input is within the configured ECO acceptance window(voltage, frequency, THD, and other quality thresholds), the UPS supplies the critical load primarily through thestatic bypass path, which has lower conversion losses than continuous double-conversion. The inverter remains synchronized and on standby, so if the mains quality deteriorates or an abnormal condition is detected, the UPS canrapidly transferthe load back to inverter operation to maintain output stability. Battery mode is only used when the rectifier/bypass source is unavailable or out of range, and maintenance bypass is a manual service path used for isolation during maintenance, not for normal energy-saving operation. Therefore, with stable utility power and ECO configured, the UPS5000-H mainly operates instatic bypass mode.
NEW QUESTION # 26
If the startup password authentication for a smart module is not complete, the ECC800-Pro WebUI and app cannot be used for commissioning.
- A. True
- B. False
Answer: A
Explanation:
In Huawei smart module commissioning and O&M workflows,startup password authentication is a mandatory security initialization stepfor the controller and its management channels. The ECC800-Pro provides WebUI and mobile app access for tasks such as device discovery, parameter setting, site configuration, alarm verification, and functional commissioning. Before these commissioning functions are allowed, the system requires completion of startup authentication actions, typically includinginitial password setup or password change, confirmation of authentication policies, and activation of secure access control. This prevents unauthorized users from entering the management plane during the critical initial stage when default credentials or incomplete security settings could exist. If startup password authentication is not completed, the platform restricts access to commissioning pages and app-based commissioning features, ensuring that configuration changes, device binding, and control operations cannot be executed until the controller is placed into a compliant, secured state. This design aligns with data center facility management best practices where commissioning must begin only after management access is hardened and auditable.
NEW QUESTION # 27
Which of the following statements are true about the industry trend of the data center cooling systems?
- A. Cloud + AI - data centers enter a new energy-saving era.
- B. Evaporative cooling systems become the main solution for large data centers.
- C. Liquid cooling systems are widely used in high-density solutions.
- D. Higher inlet and outlet water temperatures are the trend of large data center cooling.
Answer: A,C,D
Explanation:
As data center power density increases (especially driven by AI and high-performance computing), the industry trend is to adoptliquid coolingin high-density scenarios because liquid has much higher heat transfer capability than air, enabling stable cooling where rack power is very high. This makes statementAtrue. The combination ofCloud + AIpushes operators to reduce PUE and total energy cost through more intelligent control, higher efficiency cooling architectures, and integrated energy management, so statementBis also true.
For large data centers, another clear trend is increasingchilled-water supply/return temperatures(higher inlet and outlet temperatures). Warmer water improves chiller efficiency, expands the number of hours that free cooling can be used, and reduces compressor work, soDis true. However,evaporative coolingis not universally the "main solution" for large data centers because it is climate- and water-condition dependent and is typically deployed as one option among multiple architectures rather than the dominant default everywhere. Therefore, Cis the incorrect statement.
NEW QUESTION # 28
In a data center power distribution architecture, what is the primary function of a Static Transfer Switch (STS) for critical single-cord loads?
- A. Increase the output frequency from 50 Hz to 60 Hz
- B. Reduce harmonic distortion by filtering non-linear loads
- C. Provide fast switching between two independent AC power sources to maintain continuity
- D. Convert AC power to DC power for IT equipment
Answer: C
Explanation:
Huawei data center power distribution design prioritizes continuity for critical loads. For single-cord IT equipment that cannot accept dual inputs, an STS provides a practical high-availability approach by connecting the load to two independent AC sources (often A and B feeds) and transferring the load to the healthier source when abnormalities occur. The key value is speed and coordination: the STS detects voltage/frequency deviations or source failure and performs a rapid transfer to minimize or eliminate interruption seen by the load. This supports O&M strategies where upstream systems (UPS, PDUs, distribution boards) are maintained or isolated without forcing downtime on single-cord devices.
In routine operations, STS status, transfer logs, alarms, and source quality parameters are monitored to prevent nuisance transfers and to ensure correct upstream selectivity and grounding. Correct commissioning also ensures the two sources meet synchronization conditions and that bypass
/maintenance procedures are standardized, improving safety and reducing operational risk.
NEW QUESTION # 29
Which of the following statements is false about how to start an electric heater?
- A. When "Dehumidification heating" is selected, the electric heater determines whether to start based on the current temperature only when the dehumidification function is enabled.
- B. If "Dehumidification & Low temperature heating" is selected, the electric heater determines whether to start based on the temperature requirements when the dehumidification or heating conditions are met.
- C. When "Dehumidification heating", "Low temperature heating", or "Dehumidification & Low temperature heating" is selected, if the temperature in the equipment room is low, the air conditioner automatically starts the heating function to meet the temperature control requirements of the equipment room.
- D. When "Low temperature heating" is selected, the electric heater determines whether to start only based on the temperature requirements no matter whether the dehumidification function is enabled.
Answer: C
Explanation:
Huawei precision cooling logic separates heater enablement into distinct control strategies to avoid unnecessary heating and to keep humidity control stable. InLow temperature heating, the heater is governed purely by the room temperature control demand: if temperature is below the heating threshold (or below setpoint with heating conditions met), the heater can start regardless of whether dehumidification is enabled, which matches statement D. InDehumidification heating, the heater is not a general low-temperature heater; it is an auxiliary function used to prevent overcooling during dehumidification and to maintain temperature while the unit dehumidifies. Therefore, the heater in this mode is permitted to start only when thedehumidification function is activeand temperature conditions require compensation, which matches statement B. Statement C is false because it incorrectly claims thatanyof the three selections will start heating automatically whenever room temperature is low; that is not true for "Dehumidification heating" unless dehumidification is actually enabled and running.
NEW QUESTION # 30
The default port number for logging in to the NetEco is
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
In Huawei NetEco access design, the Web client is reached usingHTTPSto protect credentials and management data in transit. During initial deployment and commissioning, engineers access the NetEco login page by entering the server IP address followed by thedefault HTTPS service port. Huawei's standard login method specifies that users open a browser and enterhttps://NetEcoserver IP:31943to access the NetEco login interface. This port is therefore treated as the default Web login port in typical on-premises NetEco deployments, and it is the baseline value referenced in installation and login guidance. Other ports may appear in specific tools, customized scenarios, version variants, reverse-proxy deployments, or when security policy requires port changes, but those are exceptions driven by planning or product packaging. For exam and commissioning purposes, the correct default login port is the one used by the NetEco Web client entry point under the standard deployment model:31943.
NEW QUESTION # 31
On the ECC800-Pro WebUI, the PUE configuration mode can be "Standard" or "User-defined".
- A. True
- B. False
Answer: A
Explanation:
Huawei's ECC800-Pro supports PUE (Power Usage Effectiveness) management as part of its energy efficiency and green data center features. In practical O&M, different sites calculate PUE differently depending on metering topology, what loads are included (IT load only vs. auxiliary loads), and whether the site uses integrated modules (UPS, cooling, lighting, etc.) or external systems. To handle these real-world differences, the ECC800-Pro provides two PUE configuration approaches on the WebUI."Standard"mode is used when the site's metering points and calculation logic align with a predefined Huawei template, enabling rapid commissioning and consistent reporting."User-defined"mode is used when the customer's metering structure or management requirements differ-allowing engineers to select specific measurement points, define inclusion/exclusion rules, and tailor the calculation path so that displayed PUE matches the site's accepted KPI definition. This dual-mode design ensures PUE is both standardized where possible and flexible where necessary, improving energy analysis accuracy and supporting optimization actions.
NEW QUESTION # 32
Which strategy most directly improves data center energy performance without compromising reliability when properly engineered and monitored?
- A. Use higher allowable supply air temperature with containment and adaptive control to reduce compressor and fan energy
- B. Oversize all cooling and power equipment permanently to avoid future upgrades
- C. Operate all redundant systems at full load simultaneously to maximize utilization
- D. Disable alarms to reduce nuisance notifications and operator workload
Answer: A
Explanation:
Huawei green data center concepts focus on reducing energy consumption through engineering controls rather than sacrificing resilience. Raising the allowable supply air temperature is a proven efficiency lever because it reduces compressor workload, expands economization opportunities where applicable, and can reduce fan energy when airflow is optimized. However, it must be implemented with airflow management-especially hot/cold aisle containment-to ensure server inlet temperatures remain within safe limits. Adaptive control is critical: monitoring rack inlet temperatures, cooling unit performance, and environmental conditions allows the system to dynamically adjust cooling output, fan speed, and setpoints to match real IT load. This avoids the common inefficiency of "overcooling for safety." When combined with standardized O&M procedures, alarm thresholds, and continuous trend analysis, the strategy improves overall energy performance while preserving reliability and service continuity. In contrast, permanent oversizing or forcing all redundant systems to run fully loaded wastes energy and can reduce operating efficiency. Properly engineered, monitored optimization delivers efficiency gains with controlled operational risk.
NEW QUESTION # 33
Which of the following are the functions of the SmartLi 3.0 battery control unit (BCU)?
- A. Charge and discharge management
- B. Fault diagnosis and protection
- C. Internal short circuit prediction
- D. Group capacity test
- E. Intelligent voltage sharing and active current balancing control
- F. Management on the BMU of each battery module
Answer: A,B,C,D,E,F
Explanation:
In Huawei SmartLi 3.0, the BCU acts as the cabinet-level "brain" of the lithium battery system, coordinating measurement, control, protection, and communication. Itmanages and supervises BMUsinside the cabinet by collecting key operating data such as voltage, temperature, SOC, and SOH, and by aggregating module information for higher-level management. The BCU supportscharge/discharge managementby monitoring string current and controlling operating behaviors to keep the battery within safe electrical and thermal limits.
To ensure consistent performance across parallel strings and cabinets, it implementsintelligent voltage sharing and active current balancing, which helps equalize currents, improve utilization, and reduce uneven aging. For safety and reliability, the BCU providesfault diagnosis and protection, including handling events such as overvoltage, undervoltage, overcurrent, and overtemperature, and it can isolate abnormal loops when required. SmartLi 3.0 also incorporatesinternal short-circuit risk predictionas part of its safety strategy. Finally, group capacity testingis supported as a maintenance function to verify usable capacity and system health.
NEW QUESTION # 34
Which of the following are main components of Huawei indirect evaporative cooling system?
- A. Fan
- B. Air filter
- C. Compressor
- D. Water pump
- E. Spray system
- F. Heat exchanger
Answer: A,B,D,E,F
Explanation:
Huawei's indirect evaporative cooling system is designed to use theoutdoor air as a "free" cold sourcewhile keeping the data hall supply air isolated from outdoor contaminants and moisture. Its core is theheat exchanger, where heat from the indoor (return) air side is transferred to the outdoor working air side without mixing the two air streams. To enhance heat removal on the outdoor side, aspray systemwets the evaporation media or spray section, and awater pumpcirculates water to maintain uniform wetting and stable evaporation performance.Fansdrive airflow through the indoor and outdoor paths to ensure sufficient heat transfer and maintain the required air volume and pressure. Because outdoor air is involved on the working-air side,air filtersare required to reduce dust and protect the heat exchanger and internal airflow channels, improving reliability and reducing maintenance. Acompressoris not a main component of indirect evaporative cooling because the system primarily relies on evaporation and heat exchange rather than mechanical refrigeration.
NEW QUESTION # 35
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.
- A. Commissioning the humidifier
- B. Commissioning the indoor fans
- C. Commissioning the condensate pump
- D. Commissioning the cooling system
Answer: D
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 # 36
In alarm management, the status can be identified by masking rules.
- A. Valid
- B. Invalid
- C. Maintenance
- D. Standard
Answer: B,C
Explanation:
In Huawei alarm management,masking rulesare used to control how alarms are handled and displayed during specific conditions, such as planned maintenance, commissioning, device replacement, or known temporary abnormalities. When a masking rule is applied, the system can change how an alarm is classified so that O&M staff can distinguish between alarms that require immediate action and alarms that are expected or should be excluded from operational statistics. Two key statuses that masking rules can assign areMaintenanceandInvalid.Maintenanceindicates the alarm is generated during an approved maintenance activity (for example, power-off tests, sensor rewiring, cooling maintenance), so it is treated as expected and does not trigger normal escalation logic.Invalidindicates the alarm is not considered effective for operational follow-up-commonly used when a point is confirmed to be non-applicable, temporarily disabled, or its triggering condition is not meaningful to current operations. By contrast,ValidandStandardrepresent normal alarm handling states rather than outcomes specifically "identified by masking rules."
NEW QUESTION # 37
If the SPD indicator of a smart module is green, the SPD is running properly. If the SPD indicator is red, the SPD is faulty and must be replaced immediately.
- A. True
- B. False
Answer: A
Explanation:
In Huawei data center power distribution design, theSPD (Surge Protective Device)provides overvoltage surge protection for sensitive loads by diverting transient energy to ground through internal protection components. The SPD status indicator is used for O&M judgment of protection availability. When the indicator isgreen, it indicates the SPD protection components arewithin normal working conditionand the surge protection path remains effective. When the indicator turnsred, it typically means the SPD's internal protection element hasdegraded or disconnected(end-of-life or failure after cumulative surges), and the device can no longer provide the rated protection level. In this condition, the distribution system is left exposed to surge risk, especially during thunderstorms, switching operations, or upstream disturbances. Therefore, Huawei O&M practice treats ared SPD indicator as a replacement trigger, requiring immediate corrective action: confirm alarm/status, ensure safe isolation following electrical safety procedures, and replace the SPD module to restore protection and maintain power system reliability.
NEW QUESTION # 38
After the unit is powered on for the first time, it enters the compressor preheating state. To quickly perform power-on commissioning, you can manually shut down the compressor preheating.
- A. False
- B. True
Answer: A
Explanation:
Compressor preheating is a protection mechanism used during first power-on (and after long power-off periods) to improve compressor reliability before allowing refrigeration startup. The preheating function warms the compressor oil and reduces refrigerant migration and oil dilution, which otherwise can lead to liquid refrigerant in the compressor crankcase. If the compressor starts when oil is diluted or when liquid refrigerant is present, it increases the risk of abnormal noise, poor lubrication, high mechanical stress, and even liquid strike, which can damage the compressor and shorten service life. For data center cooling equipment, where continuous reliability is essential, the commissioning logic treats preheating as a required prerequisite for safe compressor operation. Therefore, O&M practice does not recommend bypassing or manually shutting down compressor preheating just to accelerate commissioning. The correct approach is to keep the unit energized and allow the preheating period to complete, then proceed with commissioning steps (fans, cooling system tests, alarms, and control verification) under proper protection conditions.
NEW QUESTION # 39
What are the colors of indicators on the LCD panel of the MDU?
- A. Green
- B. Red
- C. Orange
- D. Yellow
Answer: A,B,D
Explanation:
On Huawei UPS systems (such as the UPS5000 series), the MDU LCD panel includes status indicators designed to provide an immediate visual understanding of the UPS operating condition and alarm severity.
The indicator system usesthree standard colors:green,yellow, andred.Greenindicates the UPS is operating normally and the power supply path is healthy.Yellowis used to show abnormal conditions that require attention, such as warnings or non-critical alarms, where the UPS can typically continue supplying power but O&M personnel should inspect and handle the issue within the required timeframe.Redindicates serious or critical conditions, such as major faults or alarms that may threaten continuous power supply or require urgent action according to operating procedures. These three colors align with the common Huawei alarm severity presentation logic on the UPS display and help technicians quickly judge whether the situation is normal, warning-level, or critical-level without entering deeper menus.Orangeis not used as an MDU indicator color in this context.
NEW QUESTION # 40
The FusionCol8000-A230 unit uses two systems. Each system uses three compressors connected in parallel and two EEVs.
- A. False
- B. True
Answer: A
Explanation:
For FusionCol8000-A230, the "two systems" part is correct: Huawei's quick guide explicitly states that theindoor and outdoor units consist of two independent cooling systems, which is the basis for redundancy and staged capacity control.
However, the rest of the statement ("each system uses three compressors connected in parallel and two EEVs") is not supported as a fixed, universal configuration in the installation/commissioning guide text that is available here. In Huawei smart cooling designs, compressor quantity and the number of electronic expansion valves (EEVs) aremodel- and configuration-dependentand are tied to how the refrigerant circuit is partitioned (for example, multiple compressor stages for capacity modulation, and one or more EEVs for different evaporator branches). Because the documentation we can directly verify confirmstwo independent systemsbut doesnotconfirm "three compressors per system" as an explicit requirement, the combined statement (two systems + specific compressor/EEV counts) is judgedfalse: one part is verified true, while the detailed component count cannot be confirmed as stated.
NEW QUESTION # 41
When tightening the screws (M16x50 mm) for the output power cables of lithium battery cabinets, what torque should be used to tighten and verify the screws?
- A. 120 N m
- B. 100 N m
- C. 80 N m
- D. 60 N m
Answer: A
Explanation:
For Huawei SmartLi lithium battery cabinets, the output power cable termination uses high-current DC conductors, so the mechanical fastening torque is strictly specified to ensure both safety and long-term reliability. ForM16x50 mm screwsused on the+/N/# output cable terminals, the specified tightening
/verification torque is120 N m. This torque requirement is defined to achieve the correct clamping force between the DT terminal lug and the cabinet busbar/terminal surface. If the torque is below the requirement, contact resistance increases, which can lead to abnormal heating during charge/discharge, voltage drop, alarm events, and accelerated oxidation at the joint. If the torque is excessive, it can damage threads, deform the lug or busbar contact area, and introduce hidden mechanical stress that may loosen over thermal cycles. During commissioning and routine maintenance, technicians use a calibrated torque wrench to tighten and then re- verify each connection to the specified value to prevent hotspots and ensure stable operation under peak current conditions.
NEW QUESTION # 42
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.
- A. True
- B. False
Answer: A
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 # 43
The frequency of power supply equipment can be 50 Hz, 60 Hz, or 70 Hz.
- A. False
- B. True
Answer: A
Explanation:
In data center power systems, the utility grid frequency standard iseither 50 Hz or 60 Hz, depending on the country/region. Data center facility equipment-such as UPS systems, power distribution units, switchgear, and monitoring components-is designed to operate reliably under these standardized grid frequencies, with acceptable tolerance ranges around the nominal value. While some power conversion equipment can adapt between50/60 Hz(for example, via frequency tracking or double-conversion),70 Hz is not a standard utility frequencyused for data center facility power supply, and it is not treated as a normal operating frequency in typical design, acceptance testing, or O&M procedures. From an operations perspective, maintaining correct frequency is critical because abnormal frequency can trigger UPS transfer logic, increase losses, create synchronization issues with bypass sources, and negatively affect downstream IT loads. Therefore, stating that power supply equipment frequency "can be 50 Hz, 60 Hz, or 70 Hz" is incorrect for standard data center infrastructure practice.
NEW QUESTION # 44
......
Huawei H20-923_V1.0 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
| Topic 6 |
|
| Topic 7 |
|
| Topic 8 |
|
| Topic 9 |
|
| Topic 10 |
|
| Topic 11 |
|
| Topic 12 |
|
| Topic 13 |
|
| Topic 14 |
|
| Topic 15 |
|
| Topic 16 |
|
| Topic 17 |
|
Provide Valid Dumps To Help You Prepare For HCSP-Field-Data Center Facility V1.0 Exam: https://troytec.validtorrent.com/H20-923_V1.0-valid-exam-torrent.html