Ensuring Safety and Reliability Through Electrical & Cabling Maintenance
Preventive maintenance of cabling and electrical connections in photovoltaic (PV) parks is essential for ensuring safety, efficiency, and long-term reliability of the installation.
Our cabling maintenance includes:
Visual Inspections
- Check for physical damage (cuts, abrasions, UV degradation, rodent damage).
- Ensure cables are not under mechanical stress or sharp bends.
- Verify that underground cables are properly buried and protected against water ingress.
Thermal Scans (IR Thermography)
Detect hot spots caused by loose terminations, undersized conductors, or damaged insulation.
Electrical Testing
- Perform insulation resistance tests (megger testing) to check cable integrity.
- Continuity tests to ensure no breaks in circuits.
Environmental Protection
- Confirm that cables are adequately shielded against UV, humidity, and temperature fluctuations.
- Maintain proper cable trays and conduits.
Maintenance & common issues:
Maintenance Frequency
- Visual inspections: every 6–12 months
- Thermal scanning: at least once per year
- Torque checks: annually or as per manufacturer’s recommendation.
- Insulation & continuity tests: every 2–3 years, or after major events (storms, flooding).
Common issues prevented
- Cable overheating and fire hazards.
- Power losses from high resistance joints.
- Ground faults and short circuits.
- Downtime due to equipment damage.
Electrical Connections Maintenance
OUR ELECTRICAL CONNECTIONS MAINTENANCE INCLUDES
001
Tightness Checks:
Loose connections increase resistance and cause overheating. Regular torque checks are necessary, especially at combiner boxes, inverters, and transformers.
002
Corrosion Prevention:
SF₆ gas monitoring (for
GIS), breaker mechanism tests.
003
Circuit breakers:
Inspect for oxidation or corrosion at terminals, especially in humid or coastal environments & apply anti-corrosive pastes or protective sprays where recommended.
004
Cleaning:
Keep junction boxes, combiner boxes, and inverters free of dust, moisture, or debris.
005
Monitoring Systems:
Use SCADA or monitoring tools to detect anomalies in string performance (drop in current/voltage indicating connection issues).
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