PV Park: Smart Repairs & Diagnostics
We keep your PV Park Running with expert repairs & smart diagnostics. In photovoltaic (PV) parks, repairs and troubleshooting are crucial for maintaining consistent energy production, protecting assets, and ensuring compliance with safety and regulatory standards.
Our common repairs in pv parks:
Module-Level Repairs
- Cracked or broken panels due to hail, wind, or impact: Replacement is usually required.
- Hot spots caused by defective cells or shading: May need module replacement.
- Delamination or discoloration of modules: Indicates aging or manufacturing defects.
Electrical System Repairs
- Inverter faults (most common source of downtime): component replacement, firmware updates, or full inverter swap.
- String fuse failures: replacing blown fuses due to overcurrent.
- DC cabling issues such as insulation damage, loose connectors, or corrosion: repair or replace cables.
- AC side faults including breaker trips or transformer failures: inspection, rewiring, or equipment replacement.
Structural & Balance of Plant
- Mounting structures: corrosion, loose bolts, or mechanical damage need tightening, anti-rust treatment, or replacement.
- Tracking systems (if installed): motor/gearbox replacement, alignment corrections, sensor calibration.
- Grounding system: repair of broken earth connections or ground grid.
Our troubleshooting process:
Monitoring & Diagnostics
- Use SCADA systems and performance monitoring software to detect anomalies (e.g., sudden power drop in a string).
- Compare real-time performance against expected generation (PR – Performance Ratio).
Visual & Thermal Inspection
- Drones with infrared cameras to detect hot spots, string outages, or faulty modules.
- Ground-level IV curve tracing to check for string mismatch or degraded modules.
Systematic Testing
- Insulation resistance test on DC cables to locate ground faults.
- Continuity tests to ensure grounding and bonding are intact.
- Inverter error codes and manufacturer diagnostic tools.
Root Cause Analysis
- Identify whether the issue is module-related, inverter-related, or grid-related.
- Prevent recurring faults by documenting incidents and applying corrective actions.
OUR BEST PRACTICES
Find below a list with our best practices:
001
Preventive Maintenance:
It reduces emergency repairs (cleaning panels, tightening connections, vegetation control).
002
Stock of spare parts:
(Fuses, connectors, inverters, key modules), ensures faster repair turnaround.
003
Skilled technicians & safety compliance:
(Lockout-tagout procedures, PPE, arc-flash protection) are critical.
004
Reporting:
Regular reporting on Mean Time To Repair (MTTR) downtime, and fault frequency helps optimize O&M strategy.
005
Guaranteed Response:
24hours guaranteed response
why zephiros
we are Reliable and efficient
We combine deep domain experience with a service mindset to support your MV substation needs with clarity, consistency and reliability.
24/7/365
TECHNICAL SUPPORT ALL YEAR ROUND
Continuous monitoring & rapid response capability that ensures operational continuity for mission-critical MV substations.
27+
YEARS OF EXPERIENCE
Long-term involvement in complex wind farm and MV substation environments.
7+
PARTNERS IN 7 COUNTRIES
Expanding our activities across countries around the world.
experts
Your direct point of contact for MV substation maintenance