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Powercom ONL-II Three Phase — are three-phase online UPS with double conversion of energy (VFI-SS-111), designed to protect industrial, telecommunications and IT equipment. Due to the high accuracy of the output voltage, wide input voltage range and support for parallel operation, the ONL-II series is used in data centers, medical institutions, power systems and critical engineering complexes. Diagnostics of such systems allows you to maintain their stable operation, timely detect component degradation and prevent accidents.
What diagnostics include
Inspection / audit
- Visual inspection of the condition of the housing, interface connectors, indicators, connection terminals.
- Installation control: correct connection of phases, grounding, battery connection.
- Assessment of placement conditions: humidity, temperature, availability of ventilation, dustiness.
Electrical tests
- Measurement of input voltage and frequency for each phase, control of balance between phases.
- Checking output voltage, frequency stability, waveform under different loads.
- Fault simulation: phase failure, overvoltage, network disappearance — UPS response recording.
- Analysis of efficiency, power factor, harmonic distortion level.
Inverter / bypass / charge
- Evaluation of inverter operation: voltage, frequency, compliance of the sine wave with standards.
- Static bypass check: switching under load, response speed.
- Charger control: voltage/current stability, battery charging modes.
- Log analysis: history of switching, accidents, fault messages.
Battery (battery system)
- Inspection of battery cabinets or blocks: absence of swelling, corrosion, overheating.
- Measurement of voltage on each block, detection of imbalances.
- Test transfer to the battery: test of the duration of autonomous operation under controlled load.
- Analysis of charge efficiency and time for full capacity recovery.
Cooling
- Checking the condition of all fans: noise, speed stability, presence of emergency trips.
- Assessing the temperature of power units under load.
- Inspection of ventilation ducts, filters (if any) — for clogging.
Communications / monitoring
- LCD panel test: stability of indication, access to parameters, absence of errors in the menu.
- Checking the operation of SNMP, USB, RS-232 interfaces: reading, data transfer.
- Evaluation of compatibility with centralized monitoring systems (BMS, SCADA).
Technical report
- Detailed report with the results of measurements, tests, detected malfunctions.
- Recommendations for prevention, software updates, battery replacement.
- Recording of all events, switching history and warnings.
When diagnostics are required
- Regularly — annually or according to the load and operating conditions.
- After accidents, bypass trips or unexpected switching to batteries.
- After installing new batteries or changing the configuration.
- Before the end of the warranty period or in preparation for an audit.
Why choose Total-Energo LLC
- Competence in diagnosing three-phase Powercom systems, in particular ONL-II.
- Modern diagnostic equipment and experience working with loads of 10-120 kVA.
- The ability to conduct inspections without stopping the load power supply.
- Engineering report with clear conclusions and service support after diagnostics.