Solar Panel
Why Solar Panel Inspection Matters
Solar panels are long-term assets that directly impact energy efficiency, cost savings, and sustainability goals. However, issues such as microcracks, poor installation, wiring faults, or degradation can reduce system output, increase maintenance costs, and pose safety risks.
To maintain optimal performance and meet international standards, professional inspection is essential throughout the entire project lifecycle — from manufacturing to operation.
Our Inspection Services
1. Pre-Installation Inspection
Before panels reach the site, we verify product quality, labeling, packaging, and documentation to ensure modules meet technical and contractual specifications.
2. Installation Inspection
During installation, our inspectors check the mounting structure, wiring connections, grounding, inverter setup, and overall workmanship according to design and safety requirements.
3. Commissioning & Final Inspection
At the hand-over stage, we perform functional testing including I-V curve measurement, insulation resistance, thermographic imaging, and performance verification to confirm the system is ready for operation.
4. Periodic Maintenance Inspection
We provide routine inspection for operating systems to identify potential degradation or damage — such as delamination, corrosion, or loose connectors — and verify ongoing performance against expected yields.
5. Pre-Shipment & Factory Inspection (for Solar Manufacturers)
For buyers sourcing modules or components, we perform in-factory inspection, quality control review, and loading supervision to minimize damage or defects before shipment.
Inspection Scope
Our service covers:
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PV modules, mounting systems, junction boxes, inverters, and cabling
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Electrical safety and grounding verification
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Thermal and visual inspection
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Performance testing and system efficiency analysis
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Compliance with IEC and local standards
Why Choose VIS Quality Control
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Specialized in solar PV inspection: Trained experts in module technology, electrical systems, and field testing.
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ISO/IEC 17020 accredited: Reliable third-party inspection with objective, independent reports.
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Digital inspection reports: Real-time photos, measurements, and recommendations delivered online.
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Regional presence: Teams are available in Vietnam, Cambodia, and Thailand with quick on-site response.
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Performance assurance: Our inspections help clients reduce downtime, enhance energy yield, and maintain warranty validity.
Typical Clients
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Solar panel manufacturers
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EPC contractors and project developers
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Investors and asset owners
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Operation & maintenance service providers
Inspection Workflow
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Define scope: Identify project details and testing requirements.
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Schedule & deploy: Assign experienced inspectors and testing equipment.
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On-site inspection: Perform checks, tests…
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Report & recommendations: Deliver a detailed report with photo evidence and improvement advice.
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Re-inspection (if needed): Verify corrective actions and final performance.
Contact Us
VIS Quality Control
Ensure your solar energy project meets the highest standards of quality and safety.
📧 Email: info@test.visgl.com
📞 Hotline: +84 (0)28 2218 0050
🌐 www.visGL.com
