Yoha Solar has achieved another milestone in global market expansion. On June 24, the self-developed YHEL-2400 solar module EL defect detector with a pneumatic openable top cover completed quality inspection, packaging and shipment for an overseas PV module production line. Delivering high-precision and standardized non-destructive testing solutions for global PV manufacturing, this deployment marks further international recognition of Yoha Solar’s high-end PV testing equipment and accelerates the company’s global layout.
Yoha Solar’s EL Tester
As a core quality inspection device for the PV industry, the YHEL-2400 adopts mature electroluminescence non-destructive imaging technology. Operating in a fully dark environment, it performs non-contact imaging detection on powered PV modules to identify, locate and classify microscopic defects, including hidden cracks, fragments, broken grids, cold solder joints, black cells and sintering flaws. It supports full-process quality control throughout PV production and ensures consistent module quality.
Equipped with Yoha Solar’s customized high-end hardware, the detector delivers industry-leading testing performance. Its customized camera provides 48-megapixel ultra-high EL resolution, enabling precise identification of microcracks narrower than 0.03mm that are undetectable by conventional equipment. Supporting single and dual-camera capturing modes with adjustable image acquisition time ranging from 1 to 60 seconds, it balances superior precision and production efficiency. With an effective testing area of 2600×1500mm, the device is compatible with mainstream monocrystalline and polycrystalline modules and supports full-process detection before and after lamination for versatile application scenarios.
Compared with traditional testing equipment, the device’s highlight lies in its innovative pneumatic sealed top cover, which fundamentally solves industry precision errors caused by stray light interference. The pneumatic top cover features uniform closing pressure and excellent tightness, completely isolating ambient stray light to eliminate image noise and overexposure and restore real defect conditions. Its adjustable stroke and closing pressure ensure a highly unified darkroom environment for every test, eliminating manual operation errors and significantly improving the repeatability, stability and reliability of testing results.
Featuring a compact structure and easy installation, the detector adapts flexibly to on-line and off-line production scenarios. It fully covers incoming cell inspection, in-process monitoring and finished product testing, helping manufacturers reduce defective rates and production losses while providing accurate data support for process optimization.
With years of dedication to PV testing equipment R&D and manufacturing, Yoha Solar adheres to quality-oriented development and independent technological innovation. The company strictly controls product quality throughout production, commissioning and delivery, and provides professional pre-sales customization and full-cycle after-sales operation and maintenance services. Supported by stable equipment performance, high-precision testing capability and comprehensive services, Yoha Solar’s products are exported worldwide, winning consistent praise and long-term trust from global customers and building a solid industry reputation.
This successful overseas delivery fully validates Yoha Solar’s professional technological strength, reliable product quality and efficient delivery capacity. Moving forward, Yoha Solar will continue to focus on technological innovation and product iteration in the PV testing sector, develop more high-precision and intelligent PV testing equipment, and further expand global market presence. Empowered by advanced domestic intelligent manufacturing technology, the company will continuously facilitate the high-quality and standardized development of the global photovoltaic industry.