CABLING & ELECTRICAL CONNECTIONS
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
1. 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.
2. Thermal Scans (IR Thermography)
Detect hot spots caused by loose terminations, undersized conductors, or damaged insulation.
3. Electrical Testing
Perform insulation resistance tests (megger testing) to check cable integrity.
Continuity tests to ensure no breaks in circuits.
4. Environmental Protection
• Confirm that cables are adequately shielded against UV, humidity, and temperature fluctuations.
• Maintain proper cable trays and conduits.
OUR ELECTRICAL CONNECTIONS MAINTENANCE INCLUDES
1. Tightness Checks
• Loose connections increase resistance and cause overheating. Regular torque checks are necessary, especially at combiner boxes, inverters, and transformers.
2. Corrosion Prevention
• Inspect for oxidation or corrosion at terminals, especially in humid or coastal environments.
• Apply anti-corrosive pastes or protective sprays where recommended.
3. Cleaning
• Keep junction boxes, combiner boxes, and inverters free of dust, moisture, or debris.
4. Monitoring Systems
• Use SCADA or monitoring tools to detect anomalies in string performance (drop in current/voltage indicating connection issues).
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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.
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