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Riello Sentryum Rack — is a three-phase modular double-conversion uninterruptible power supply system (VFI-SS-111), placed in a rack-mount design and designed for compact integration into IT infrastructure, server rooms, telecommunications equipment, medical systems and data centers. Sentryum Rack provides flexible redundancy, efficient operation in parallel mode and compatibility with monitoring systems. Diagnostics cover all key elements: power modules, inverter, rectifier, batteries, cooling systems and digital communication.
What diagnostics include
Inspection/audit
- Identification of system configuration: number of modules, operating mode, presence of external batteries and bypass.
- Verification of correct installation: grounding, phases, ventilation directions, physical condition of the rack and cables.
- Assessment of accessibility for service, operating conditions (dust, moisture, temperature).
- Visual inspection of elements: interfaces, terminals, signal connections, ventilation holes.
Electrical tests
- Analysis of input parameters: three-phase voltage, frequency, symmetry, stability.
- Output voltage control: waveform, harmonic level, frequency stability under variable load.
- Checking switching between grid, inverter and static bypass — continuity of power supply.
- Analysis of the UPS response during a simulated switch to backup power (if necessary).
Inverter / rectifier / bypass check
- Detailed check of the inverter module operation: voltage, temperature, signal stability.
- Analysis of the rectifier: input current level, stability of operation during battery charging.
- Static bypass testing: correct synchronization, behavior during emergency switching.
- Reading logs: recorded failures, events, mode changes.
Battery (battery system)
- Inspection of battery connections: terminals, cables, cabinet ventilation (if any).
- Measurement of battery block voltage, check of voltage balance and currents.
- Charge control: charger operation in Float/Boost modes.
- Discharge test possible (with user consent) to check actual autonomy.
Cooling
- Checking fans in each module: speed, noise, response to load increase.
- Evaluating the temperature of inverters, control boards, connectors and battery packs.
- Inspecting ventilation ducts and grilles for blockage or damage.
Communications / monitoring
- Testing the front display: access to logs, navigation interface, clarity of messages.
- Checking SNMP, Modbus TCP/IP, RS-232/485, USB: reading parameters, responding to commands.
- Analysis of event logs: switching modes, errors, warnings.
- Assessment of interaction with BMS or SCADA systems (if available).
Technical report
- Preparation of a detailed report on the status of inverters, batteries, cooling, interfaces.
- Fixing of detected malfunctions, deviations from standards, communication failures.
- Recommendations for eliminating defects: battery replacement, ventilation cleaning, software update, module balancing.
When diagnostics are needed
- At least once a year to ensure uninterrupted operation of the IT infrastructure.
- After triggering emergency modes, reducing the time of autonomous operation or overheating.
- Before updating the software or connecting additional loads.
- After prolonged storage or commissioning after downtime.
Why choose LLC «Total-Energo»
- Experience in diagnosing Riello Sentryum rack systems in data centers, banks, telecom and medicine.
- Possibility of diagnostics without stopping the power supply — if there is a backup channel or external bypass.
- Use of specialized equipment for analyzing voltages, logs, temperature conditions.
- Professional reporting, recommendations for modernization and after-service support.