Introduction

This document details the specifications and performance of the Automated Solar Panel EL Tester—an essential module in any Solar Panel Production Line—designed for precise EL Defect Testing.

Our system is engineered as an advanced EL Tester specifically optimized for Large panel size EL Tester applications, delivering thorough inspection of solar modules across all production stages. This EL Tester effectively detects hidden cracks, fragments, faulty soldering, grid breaks, and other efficiency-critical anomalies - capabilities that make it indispensable for Electroluminescence test sale implementations.This comprehensive detection process is crucial for quality control in an Electroluminescence test sale environment on a busy Solar Panel Production Line.

1. Specifications of the EL Tester

2. EL Tester Configuration

• Chassis × 1
• 8 mm tempered glass × 1
• Power supply unit × 1
• Computer × 1
• Specialized software × 1
• Camera × 1
• Electrical control box × 1
• Easily integrated into any Solar Panel Production Line.

3. Performance Specifications

4. Dedicated Control Software

Industry-specific interface for intuitive operation

Photo-query functionality

Automatic barcode scanning and file naming; Chinese-language interface; constant-current control; one-click scanning, categorization, and saving; double-click to zoom images for detailed EL Tester analysis

Flexible defect criteria: black spots, broken gridlines, fragments, etc.; automatic defect-type statistics and text-report generation for streamlined EL Defect Testing records

5. Wide Applicability

Suitable for monocrystalline and polycrystalline silicon modules in all EL Defect Testing scenarios.

6. Defect Detection Principle

Electroluminescence (EL) brightness is proportional to minority-carrier diffusion length. When voltage is applied, the cell emits infrared light captured by the imager. Defective regions with lower diffusion lengths emit less light, appearing darker, thus pinpointing silicon wafer, diffusion, etching, printing, sintering, or other process defects.

7. Key Features

• Open design for maximum efficiency
• High accuracy EL Tester for Solar Panel Production Line
• High-definition camera with imported chips
• Dimensions: 1730 × 1150 × 1200 mm
• Weight: 200 kg

Our Services:



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

Wuhan Yoha Solar Technology Co., Ltd., located in the Wuhan East Lake High-Tech Development Zone (Optics Valley of China, Wuhan), 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, including Fiber Laser Cutting Machine, Solar cell sorting instrument, solar power tester photovoltaic IV tester, and EL Electroluminescent tester defect tester, which are exported to various countries and regions.

Established for over a decade, our company has earned unanimous praise from industry peers for its professional expertise and dedicated attitude. Our products, known for their excellent mechanical performance and cost-effectiveness, have also gained widely recognition from our customers.

Our company has a team of senior engineers with years of experience in the photovoltaic industry, providing strong technical capabilities. They can offer scientific guidance and robust technical support for the configuration, production, and planning of module encapsulation production lines.

We adhere to the business philosophy of "innovation in technology, products, and services," guided by the corporate spirit of "unity, striving, pragmatism, and innovation." We are committed to providing comprehensive solutions and excellent service to meet customer needs and work together for a better future.