Quality Control and Inspection Services for the Solar Industry — Powered by NBNQC

Introduction

As the global solar energy market continues to expand, the need for reliable, high-quality photovoltaic (PV) products is greater than ever. Ensuring consistent quality across every component of a solar energy system — from PV modules to inverters — is crucial for safety, long-term performance, and compliance with international standards.

NBNQC offers professional, third-party inspection and quality control services for the solar industry in China, helping global buyers guarantee the quality of their solar products before shipment.

What Products Are Included in the Solar Industry?

The solar industry covers a wide range of products, each requiring strict quality management. NBNQC’s services cover inspections for:

• Photovoltaic (PV) Modules / Solar Panels
• Solar Inverters (string, central, hybrid)
• Solar Batteries & Energy Storage Systems
• Mounting Structures & Trackers (MMS)
• Junction Boxes and Connectors
• Cables, Wiring, and Electrical Components
• Charge Controllers
• Solar Water Heaters
• Portable Solar Systems
• Solar Lighting Systems

Each of these components must meet rigorous safety, reliability, and performance requirements to perform efficiently in various environmental conditions.

Solar Module Inspection and Testing

NBNQC provides comprehensive inspection services for photovoltaic modules at different production and project stages. Key inspections include:

✔️ Visual Inspection

Checking for scratches, cracks, color inconsistencies, frame deformation, and label accuracy.

✔️ Dimensional and Weight Check

Verifying the module’s dimensions and weight against product specifications.

✔️ IV Curve Test

Measuring the current-voltage (IV) characteristics to confirm open circuit voltage (Voc), short-circuit current (Isc), maximum power (Pmpp), and module efficiency.

✔️ Electroluminescence (EL) Test

Detecting micro-cracks, broken cells, and internal defects invisible to the naked eye.

✔️ Insulation Resistance Test

Ensuring electrical insulation safety under standard and high-voltage conditions.

Quality Control for Solar Panels, Inverters, and Other Equipment

Beyond PV modules, NBNQC also inspects and tests other critical components:

• Solar Inverters: Visual checks, function testing, wiring inspection, input/output voltage verification, and compliance checks for CE, UL, and IEC standards.
• Batteries and Storage Systems: Capacity testing, safety testing, charge/discharge cycle tests.
• Mounting Structures: Visual inspection, dimensional verification, welding quality check, surface treatment inspection.
• Electrical Components: Testing cables, connectors, junction boxes for conductivity, insulation, and labeling.

Inspections can be conducted at various stages:

• Pre-Production Inspection
• During Production Inspection
• Pre-Shipment Inspection
• Container Loading Supervision
• Factory Audit
• On-site Commissioning Inspection

Global Quality Standards and Certifications for Solar Products

To successfully enter international markets, solar products must comply with specific standards and certifications. NBNQC ensures your products meet these global requirements:

International Standards

• IEC 61215: Design qualification for PV modules.
• IEC 61730: Safety requirements for PV modules.
• ISO 9001: Quality management systems for manufacturers.
• ISO 14001: Environmental management.

🇪🇺 European Market

• CE Marking
• TÜV Rheinland/ TÜV SÜD Certification
• RoHS Compliance

🇺🇸 U.S. Market

• UL 61730 / UL 1741: PV module and inverter safety.
• CEC Listing: For state-specific rebates and grid connection.
• NEC Compliance: National Electrical Code (NFPA 70).

🇦🇺 Australian Market

• CEC Approval
• AS/NZS 5033: Installation and safety standard.

🇯🇵 Japanese Market

• JIS Certification
• JET (Japan Electrical Safety & Environment Technology Laboratories)

🇮🇳 Indian Market

• BIS Certification (IS 14286, IS 61730)
• MNRE Approval

Why Choose NBNQC for Solar Quality Control?

• Rich Experience in the Solar Industry
• Certified Inspectors and Engineers
• Detailed Inspection Reports with Photos, Test Data, and Certification Checks
• Coverage Across Major Chinese Solar Manufacturing Regions
• Customizable Inspection Checklists Based on Client Requirements
• Compliance with IEC, UL, CE, and Regional Standards

By working with NBNQC, you minimize the risks of receiving faulty products, improve supply chain efficiency, and ensure your projects meet international quality expectations.

Looking to secure your solar supply chain in China?
Contact NBNQC today to learn more about our tailored solar quality control and inspection services.