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Socomec MODULYS XL — is a high-performance modular uninterruptible power supply system with online double-conversion topology, designed for scalability up to 1200 kVA. The model is aimed at operation in data centers, critical infrastructures, industrial facilities, where the priority is power continuity and ease of maintenance. The system has hot-swappable modules, redundant architecture (N+1, N+X), built-in self-diagnostics. Diagnostics includes checking each module separately, as well as assessing the overall condition of the system, batteries, monitoring and cooling.
What diagnostics include
Inspection / audit
- External inspection of the system: integrity of the housing, absence of damage, condition of interfaces.
- Configuration fixation: number of power modules, redundancy, batteries, presence of external bypass.
- Evaluation of installation conditions: ventilation, cleanliness, temperature, humidity.
- Checking compliance of the electrical connection with the manufacturer's requirements.
Electrical tests
- Control of input parameters (U, f) for each phase.
- Measurement of output voltage, checking stability and harmonic distortion.
- Switching between modes (inverter ↔ bypass ↔ network) with reaction time fixation.
- Assessment of system behavior under load, including partial/asymmetric.
Inverter/bypass test
- Analysis of the operation of each power module of the inverter: load, currents, temperature, efficiency.
- Functionality of automatic and manual bypass, checking the correctness of switching.
- Synchronization of inverters with each other and with the network.
- Reading error logs, events, switching, load history by modules.
Battery (battery system)
- Inspection of battery cabinets: temperature, mechanical condition, signs of degradation or corrosion.
- Measurement of voltage by sections, checking the balance between battery groups.
- Monitoring the operation of the charger of each active module: voltage, current, Float/Boost mode status.
- Standalone test (upon agreement): determining the system operation time from the battery and the behavior of the modules.
Cooling
- Testing the fans of each module: rotation speed, noise, thermal regulation.
- Monitoring the temperature sensors in the area of the power units and the battery.
- Inspection of filters, ventilation holes: dust, contamination, air circulation.
Communications / monitoring
- Checking the local display: accuracy of readings, availability of data for each module.
- Analysis of communication interfaces: Modbus, SNMP, RS-485, dry contacts — correctness, exchange stability.
- Assessment of work with external systems (BMS, SCADA): availability of variables, regularity of data updates.
Technical report
- Full report with separate analysis of each system module: load, status, errors, efficiency.
- Conclusions on the battery system, cooling, monitoring, communications.
- Recommendations: module replacement, firmware update, calibration, filter cleaning.
When diagnostics are needed
- Regularly — at least once a year according to Socomec recommendations.
- After an emergency shutdown, power instability, or loss of reserve.
- Before adding or replacing modules, or when changing the load configuration.
- After a long downtime or recovery from emergency work.
Why choose Total-Energo LLC
- Experience in servicing MODULYS XL and other Socomec modular solutions (GP4, MASTERYS, DELPHYS).
- Tested diagnostics algorithms for each individual module without affecting the overall operation of the system.
- Certified engineers with diagnostic practice at Tier III–IV facilities.
- The possibility of service without stopping the power supply to consumers — thanks to redundant architecture (N+1).
- A comprehensive approach: audit, battery replacement, SNMP/Modbus configuration, software updates, service support.