H20-923_V1.0 PDF Dumps Real 2026 Recently Updated Questions
Released Huawei H20-923_V1.0 Updated Questions PDF
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NEW QUESTION # 32
Video management can connect to the third-party video surveillance subsystem and play historical videos.
- A. True
- B. False
Answer: A
Explanation:
In Huawei's data center O&M architecture, video is treated as an important auxiliary capability for security and remote operation. TheVideo Managementfunction is designed not only to view live camera feeds, but also to integrate video resources into the same O&M workflow as alarms, access control events, and environmental monitoring. In typical deployments, the actual video storage and recording are handled by athird-party video surveillance subsystem(for example, an NVR/VMS platform). Huawei's video management function can connect to that third-party subsystem so that camera resources can be accessed in a unified interface, allowing operators to perform linkage operations such as "view video on alarm" and routine security inspection without switching platforms. Because historical recordings are stored by the surveillance subsystem, once the integration is established and permissions are correctly configured, operators can retrieve andplay back historical videofor event tracing, audit, and incident investigation. This supports closed-loop O&M: alarm/event occurs # video verification # root-cause confirmation # maintenance action # evidence retention.
NEW QUESTION # 33
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 # 34
Huawei-developed intelligent rPDU (PDU2000M) can replace the original UIM20A expansion module. The rPDU can connect to the cabinet temperature/humidity sensors, smart U space managers, and door status sensors.
- A. True
- B. False
Answer: A
Explanation:
In Huawei smart module monitoring architecture, theUIM20A expansion moduleis traditionally used toincrease device portsso cabinets can connect multiple intelligent components and sensors (for example, door status and environmental sensors). Huawei also provides theintelligent rPDU PDU2000M, whosemain control moduleincludes communications and DI interfaces designed to directly##cabinet-level intelligent devices for centralized monitoring and management. In Huawei's solution description for rPDU-monitoring networking, thePDU2000M is positioned to replace the expansion-module role, meaning that in applicable scenarios, cabinets can connect monitoring devices through the PDU2000M without deploying an additional UIM20A expansion module. This supports practical connections such asT/H sensors,smart U space managers, anddoor status/door-access related signalsthrough the PDU2000M interfaces, and then these devices are managed
/bound in the controller's smart module view. Huawei O&M guidance also emphasizes avoiding duplicate connections (do not connect the same device to both UIM20A and PDU2000M), aligning with the replacement concept. (Scribd)
NEW QUESTION # 35
The rated output capability of a single power module for the UPS5000-H is how many kVA.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
Huawei UPS5000-H is a modular UPS platform built by paralleling standardized power modules inside the power cabinet to form different system capacities. In this architecture, the "single power module" is the basic building block that contributes a fixed rated apparent power to the total UPS capacity. For the UPS5000-H series, each power module is rated at100 kVA, and the system capacity is achieved by installing multiple 100 kVA modules and configuring redundancy (such as N+1). This modular approach improves availability and O&M efficiency because a failed module can be isolated and replaced without shutting down the entire UPS, while the remaining modules continue carrying the load within their capacity limits. Using 100 kVA as the module rating also simplifies planning: technicians can quickly estimate remaining headroom by counting active modules and comparing total available kVA/kW against the real-time load, ensuring the UPS stays within recommended loading and redundancy margins during maintenance or fault conditions.
NEW QUESTION # 36
The UPS5000-H-1200 kVA and UPS5000-H-1600 kVA have two power cabinets and one bypass cabinet, and are equipped with the MDU, ECU, and surge protection box.
- A. False
- B. True
Answer: A
Explanation:
This statement is incorrect because it combines two different frame configurations into one description. In the UPS5000-H family,cabinet composition depends on capacity. For theUPS5000-H-1200 kVA, the user manual' s exterior description shows asingle power cabinet plus a bypass cabinet, together with theMDU. In other words, 1200 kVA is not described as "two power cabinets + one bypass cabinet" in its standard cabinet topology. By contrast, theUPS5000-H-1600 kVAis a wider frame and its maintenance/structure description explicitly showsPower cabinet 1, Power cabinet 2, and a bypass cabinet, and the product documentation also includes component sections for items like thesurge protection boxandMDU. Because the 1200 kVA model does not match the "two power cabinets" description, the combined statement (covering both 1200 kVA and
1600 kVA) isfalse, even though the "two power cabinets + one bypass cabinet" part is valid for 1600 kVA.
NEW QUESTION # 37
Which of the following statements are true about the industry trend of the data center cooling systems?
- A. Liquid cooling systems are widely used in high-density solutions.
- B. Cloud + AI - data centers enter a new energy-saving era.
- C. Evaporative cooling systems become the main solution for large data centers.
- D. Higher inlet and outlet water temperatures are the trend of large data center cooling.
Answer: A,B,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 # 38
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 condensate pump
- B. Commissioning the humidifier
- C. Commissioning the indoor fans
- 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 # 39
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 # 40
Which of the following is not a scenario-based solution for Huawei data center products?
- A. FusionDC800
- B. FusionModule500
- C. FusionDC1000
- D. FusionModule2000
Answer: A
Explanation:
Huawei's scenario-based data center facility portfolio is organized around clearly defined solution families that map to typical deployment scenarios and site sizes. FusionModule500 and FusionModule2000 are smart modular data center solutions designed for standardized, fast deployment in equipment rooms and enterprise edge/branch scenarios.They integrate key subsystems such as power supply and distribution, cooling, monitoring, and optional fire protection into a modular architecture that reduces footprint and accelerates on- site delivery. Likewise, FusionDC1000 is Huawei's prefabricated modular data center series, delivered as complete, factory-integrated modules that combine civil engineering elements with electromechanical infrastructure for rapid construction, predictable quality, and scalable expansion across different capacity tiers. In contrast, FusionDC800 is not used as a defined scenario-based solution name within Huawei's mainstream data center facility solution lineup (where "FusionDC" offerings are represented by the FusionDC1000 series and "FusionModule" offerings by numbered FusionModule solutions). Therefore, FusionDC800 is the option that does not match Huawei's scenario-based solution naming.
NEW QUESTION # 41
After installing the FusionCol8000-C (110-440 kW), inject water to preserve the pressure for the chilled water pipes to how many MPa. After 30 minutes, check that no leakage occurs. Preserve the pressure for 24 hours. If the pressure drop is less than 0.01 MPa and no leakage occurs, the pipes do not leak.
- A. 0.5
- B. 0
- C. 0.8
- D. 1.2
Answer: C
Explanation:
For FusionCol8000-C chilled-water systems, Huawei commissioning requires awater leakage/pressure- holding teston the chilled-water piping after installation to verify joint sealing, valve interfaces, and connection integrity before long-term operation. The specified method is toraise the water pressure in the chilled-water pipe to 0.8 MPa, then observe for30 minutesto confirm there is no visible leakage. If the system remains dry, the same pressure isretained for 24 hoursas a stability verification step. The acceptance criterion is that thepressure drop is less than 0.01 MPaover the 24-hour period and no leakage is found, which demonstrates that the piping and fittings meet tightness requirements under the prescribed test pressure. This procedure helps prevent future failures such as slow seepage, corrosion around joints, insulation waterlogging, and unexpected shutdowns caused by water loss or low differential pressure alarms. It also ensures that subsequent flushing, venting, and operational commissioning can be performed safely and reliably.
NEW QUESTION # 42
In an in-room solution that adopts overhead air supply through air ducts, the net height of each floor must be greater than or equal to how many meters?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
Explanation:
For an in-room cooling solution that usesoverhead air supply with air ducts, sufficient vertical space is required to accommodate the ductwork, airflow distribution components (such as plenums, turning vanes, flexible connectors, and diffusers), cable trays/pipes that may share the overhead route, and the necessary maintenance clearance. If the net height is too low, the duct cross-section becomes constrained, which increases airflow resistance and static pressure, reduces delivered airflow volume, and can cause uneven air distribution. This leads to hot spots, higher fan power, and difficulty maintaining stable supply/return temperature control. In Huawei data center air-conditioning design guidance, overhead ducted supply is therefore matched with aminimum net floor height requirement of 4 m, ensuring ducts can be sized correctly for the target airflow, noise, and pressure limits while preserving safe installation and maintenance space. A 3 m net height is generally suitable for non-ducted in-room layouts, but becomes insufficient once full overhead ducting is introduced.
NEW QUESTION # 43
The default address of the WAN1 port on the ECC800-Pro is
- A. 192.168.248.1
- B. 192.168.8.10
- C. 192.168.0.10
- D. 192.168.248.10
Answer: B
Explanation:
In Huawei smart module commissioning, the ECC800-Pro controller provides a dedicated management access path through its WAN ports. For on-site startup commissioning, technicians typically connect a laptop directly toWAN1and place the laptop IP address in the same subnet as the controller so they can open the WebUI and complete initial settings (time, network, device discovery, alarm checks, linkage tests, and parameter commissioning). Thefactory default IP address for WAN1 is 192.168.8.10, which is used as the initial access point before the address is planned and changed to match the customer's management network. This default design supports quick "point-to-point" commissioning without depending on upstream switches, DHCP services, or enterprise IP planning at the very beginning of deployment. After login, Huawei commissioning practice is to harden access (password/authentication completion), then update network parameters and integrate the ECC800-Pro into the site monitoring network to enable continuous O&M, remote alarm reporting, and device management.
NEW QUESTION # 44
Which strategy most directly improves data center energy performance without compromising reliability when properly engineered and monitored?
- A. Disable alarms to reduce nuisance notifications and operator workload
- B. Operate all redundant systems at full load simultaneously to maximize utilization
- C. Oversize all cooling and power equipment permanently to avoid future upgrades
- D. Use higher allowable supply air temperature with containment and adaptive control to reduce compressor and fan energy
Answer: D
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 # 45
Which of the following are main components of Huawei indirect evaporative cooling system?
- A. Spray system
- B. Compressor
- C. Water pump
- D. Heat exchanger
- E. Air filter
- F. Fan
Answer: A,C,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 # 46
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 # 47
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 # 48
Which of the following control modes can be used for temperature and humidity control of smart cooling products?
- A. Supply air
- B. Cold aisle
- C. Hot aisle
- D. Return air
Answer: A,B,D
Explanation:
Smart cooling temperature and humidity control is based on where the control "reference point" is measured and regulated.Supply air controluses the unit outlet sensor as the main reference, so the system directly regulates the temperature (and humidity when configured) of the air delivered to the IT area. This provides stable supply conditions and is widely used for predictable airflow organization.Return air controluses the unit inlet/return sensor as the reference, reflecting the heat absorbed from IT loads; it helps the unit respond to real load changes and maintain stable operation when room mixing or load distribution varies.Cold aisle controluses sensors placed in the cold aisle (near rack inlets) as the reference, aligning control with the most critical point for IT reliability-server intake conditions-especially in contained aisle scenarios.Hot aisleis generally not used as a primary temperature-and-humidity control mode because hot aisle conditions are intentionally high and variable (driven by load and containment), and controlling to hot aisle targets can conflict with ensuring stable rack inlet temperature and proper dehumidification behavior. Therefore, A, B, and C are valid control modes.
NEW QUESTION # 49
In a data center fire protection design, which approach best matches Huawei facility practice for protecting IT rooms while minimizing secondary damage to IT equipment?
- A. Use only portable extinguishers and rely on manual response
- B. Deploy a smoke detection system plus a clean-agent gas extinguishing system with interlock controls for automatic release
- C. Install a water sprinkler system as the only suppression method inside the IT white space
- D. Disable automatic suppression to avoid accidental discharge
Answer: B
Explanation:
Huawei data center facility design typically follows a layered fire protection concept: early detection, controlled alarm linkage, and suppression methods that protect equipment and ensure personnel safety.
A smoke detection system (often combined with staged alarms) provides early warning so operators can verify events and initiate emergency procedures. For the IT white space, a clean-agent gas extinguishing system is preferred because it suppresses fire without leaving residue and significantly reduces the risk of corrosion or contamination compared with powder-based agents. The extinguishing system is normally integrated with linkage/interlock controls: audible/visual pre-discharge alarms, time delay, emergency abort, door access control logic, and HVAC shutdown or damper control to help maintain agent concentration. This coordinated mechanism reduces false discharge risk while preserving a reliable automatic response if a real fire develops. In contrast, relying only on manual extinguishers is too slow for rapid fire growth, and water sprinklers alone can cause substantial collateral damage to servers and power equipment.
NEW QUESTION # 50
Which of the following is the procedure for replacing a damaged UPS power module onsite?
- A. ##
- B. ##
- C. ##
- D. ##
Answer: C
Explanation:
For onsite replacement of a UPS power module, Huawei's maintenance logic follows a safe "isolate # remove
# insert # re-enable" sequence controlled by the moduleready switch. During removal, the ready switch must be rotated to theOFFstate first so the module is logically isolated from operation and will not participate in power conversion. After isolation, the four fixing screws are removed and a short waiting period is required to allow internal energy in capacitors to discharge before the module is pulled out. This matches statement#.
During installation, the ready switch must remainOFFbefore insertion to prevent unintended startup or arcing during connector engagement. The module is placed in position, inserted slowly and evenly until fully seated, then secured with the four screws. Only after mechanical fastening and full seating is confirmed should the ready switch be rotated to theONstate to allow the system to recognize and bring the module online. This matches statement#.
NEW QUESTION # 51
In alarm management, the status can be identified by masking rules.
- A. Maintenance
- B. Invalid
- C. Standard
- D. Valid
Answer: A,B
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 # 52
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 # 53
After replacing the fan, choose "Menu > _____ > Performance Maintenance" on the main screen to enter the
"Performance Maintenance" screen and clear the accumulated runtime of the indoor fan.
- A. Running
- B. Settings
- C. Alarms
- D. Maint
Answer: D
Explanation:
In Huawei room air conditioner and precision cooling unit O&M, fan replacement is treated as a maintenance activity that must be recorded in the controller so lifecycle management remains accurate. The controller tracksaccumulated runtimefor wear components such as indoor fans to support preventive maintenance planning, alarm thresholds, and performance analysis. After a fan is replaced, the old runtime value must be cleared so the system can correctly measure the new fan's service hours, avoiding premature "maintenance due" prompts or misleading reliability assessments. This function belongs to themaintenancefunction set rather than alarm viewing, parameter settings, or basic running status. Therefore, the correct navigation is throughMenu > Maint > Performance Maintenance, where the technician can locate the indoor fan runtime item and reset/clear it after confirming the replacement. Performing this step ensures consistent O&M records, supports correct maintenance intervals, and helps troubleshooting by aligning future fan-related alarms with the actual operating hours of the newly installed component.
NEW QUESTION # 54
During routine maintenance of the lithium battery cabinet, which of the following procedure is true about replacing a faulty battery module?
- A. 1-6-2-5-3-7-4
- B. 1-3-2-6-5-7-4
- C. 1-6-3-2-5-7-4
- D. 1-2-3-6-5-7-4
Answer: C
Explanation:
The correct sequence prioritizeselectrical safety first, then mechanical disassembly. You mustconfirm the batteries are not discharging(Step 1) to avoid working under load. Next, the cabinet must be placed into a safe powered-down state byswitching off the battery circuit breaker and long-pressing the POWER ON/OFF button to power off the cabinet(Step 6). Only after the cabinet is safely powered down should you open up the working area byremoving the front covers of the faulty module and adjacent modules(Step 3). Then youturn off the ready switchon the battery management module (Step 2) to prevent the system from re-enabling the module unexpectedly during maintenance. After that, youloosen the securing bolts and pull out the battery management module about 10 cm(Step 5) to create operating space and ensure isolation for subsequent operations. With the cabinet safely stopped, you canremove the cables and copper barsconnected to the faulty module (Step 7), and finallyremove the baffle plate and pull out the faulty battery module(Step 4).
NEW QUESTION # 55
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