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Specifications:

This advanced system is an EL Tester developed by a top-tier EL sorting integrated machine supplier. It is designed specifically for integration into a solar panel production line, and it meets the stringent requirements of Electroluminescence test sale processes while accommodating large panel dimensions as a Large panel size el tester.

1. Main Equipment Specifications

1.1 Dark Box (Aluminum Alloy Profile, Aluminum-Plastic Panels)
The dark box features an elegant, streamlined design and a lightweight structure, ensuring portability and ease of installation. The aluminum-plastic panels effectively block out external light, which is essential for maintaining the accuracy of the EL Tester during Electroluminescence test sale. The inner walls are lined with reflective aluminum-plastic panels to enhance the imaging quality of the dark box.

1.2 Shooting Mode
Supports both single and dual camera configurations to capture high-resolution images critical for precise EL Tester operations.

1.3 Monitoring Points

• Before Lamination: Monitors the solar modules prior to lamination.
• After Lamination: Captures images after lamination to detect any EL defects during Electroluminescence test sale.

1.4 Camera

• Sensor Manufacturers: Sony and Nikon
• CCD Target Surface: Matched to the pixel resolution
• Camera Type: CCD with both internal and external cooling
• Pixel Resolution: 24 Megapixels
• Image Acquisition Time: Adjustable between 1 to 60 seconds
• Detection Capability: Capable of identifying cracks as narrow as 0.5mm

1.5 Lighting Mode
Utilizes a mirror reflective side lighting configuration to optimize image contrast for EL Tester operations.

1.6 Power Supply

• Voltage: Adjustable from 0 to 60V
• Current: Adjustable from 0 to 10A

1.7 Test Range
Operates reliably within an ambient temperature range from -10°C to 40°C.

1.8 Test Parameters
Includes settings for target, gain, time, gamma, contrast, and data width. Designed specifically to test solar modules (both monocrystalline and polycrystalline) on a solar panel production line.

2. Equipment Configuration:

3. Equipment Performance Specifications:

4. Detectable Defect Types

The EL Tester is engineered to identify a variety of defects during EL Defect Testing. It can detect:

• Welding Black Spots
• Hidden Crack Black Spots
• Mixed Current Levels
• Battery Process Defects
• Typical Cold Soldering
• Battery Raw Material Contamination

These defect types are crucial for maintaining quality standards during Electroluminescence test sale, ensuring that every panel on the production line meets stringent requirements.

5. Dedicated Control Software

The control software has been specifically designed for industry applications. Key features include:

• A user-friendly interface that simplifies operation of the EL Tester during EL Defect Testing on a Solar Panel Production Line.
• Unique photo query functionality that enhances the imaging process within an Automated Solar Panel EL Tester.
• Automatic barcode scanning with file naming based on barcode data, supporting a Chinese-language interface and facilitating the control of the constant current source—ideal for smooth Electroluminescence test sale operations.
• Flexible settings to adjust defect criteria (e.g., the degree and number of black spots, broken grids, or fragments), which automatically compiles defect statistics and generates text files for record-keeping.

6. Wide Applicability

This EL Tester is versatile and can be used to test both monocrystalline and polycrystalline silicon solar modules. It is designed to perform reliable EL Defect Testing across different panel types on a Solar Panel Production Line, making it an excellent solution as a Large panel size el tester.

7. Defect Detection Principle

The defect detection principle employed by this Automated Solar Panel EL Tester is based on electroluminescence (EL) brightness. When voltage is applied to a solar cell, it emits light captured by an integrated infrared imager. Defective areas, having a lower minority carrier diffusion length, emit less light, resulting in darker images. This contrast enables the precise identification of defects such as those stemming from issues in silicon wafer processing, diffusion, etching, printing, sintering, and other production processes—a fundamental aspect for any Electroluminescence test sale.

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About Us:

Yoha Solar is a high-tech enterprise dedicated to the research, development, manufacturing, sales, and after-sales service of serial photoelectric automation equipment.
15+ Years Engaged In Solar
300+ Customers Worldwide


Our company primarily serves the solar photovoltaic industry and holds its own import and export rights. We have developed a range of independent R&D equipment.

Main Machinery:

Fiber Laser Cutting Machine
Solar cell sorting Machine
Solar Cell IV tester
EL defect tester
EL and AOI Appearance Tester
Solar Panel Production Line
Other Auxiliary Machines