Nowadays, photovoltaic (PV) power plants are widespread in both urban and rural areas. With the continuous expansion residential, commercial, and industrial PV, as well as large-scale ground-mounted PV bases, PV modules operating outdoors for long periods are prone to various hidden faults. These faults cause power generation decay, leading to invisible losses in power plant revenue. Traditional PV operation and maintenance (O&M) mostly rely on visual inspection and power generation data comparison to troubleshoot, which can only detect obvious damage and blackening faults. They are completely unable to identify issues such as internal module degradation, performance deviation, and hidden inefficiency, resulting in many modules operating for long periods. The WX-IV2 portable IV tester is a lightweight intelligent testing device in the PV O&M field, specifically designed for outdoor on-site. It can quickly complete PV module performance screening and accurately identify various invisible hidden faults, providing simple and efficient technical support for refined PV power plant O&M, fault troubleshooting, and improvement.

The WX-IV2 portable IV tester has become a must-have tool for PV O&M personnel and power plant maintenance teams. Unlike traditional fixed or laboratorystyle testing equipment, which are bulky, difficult to transport, and limited in application scenarios, this device features portability and rapid on-site testing. It is fully adaptable to various outdoor scenarios such as rooftop, mountain, and ground-mounted power plants. Without complex operating procedures, it can complete module performance testing anytime and anywhere, upgrading PV fault detection from traditional data analysis to intuitive on-site troubleshooting and immediate problem localization.

The core advantages of the WX-IV2 portable IV tester are its mobility, precision, and ease of, perfectly meeting the various needs of outdoor PV on-site O&M. The device is very convenient for O&M personnel to carry to various power plant sites, unaffected by, terrain, or module layout restrictions, achieving full-coverage, zero-blind-spot testing. It has a low operational threshold, requiring no professional technical accumulation. Simple operation allows for testing of a single module, providing intuitive feedback on the module's real working status. It accurately locks onto inefficient, faulty, and degraded modules, completely solving the pain points of troubleshooting and low accuracy in traditional O&M, making PV O&M more precise and efficient.

In the daily O&M, acceptance testing, and fault troubleshooting of PV plants, the portable IV tester plays an irreplaceable practical value. During daily inspections, it can perform routine sampling of module performance to timely discover hidden faults and carry out early repair and, preventing small faults from evolving into large-scale performance degradation. During the new construction and grid-connection acceptance stages of power plants, it can comprehensively screen for module quality issues, defective and inefficient modules from being put into use, thereby ensuring the construction quality of the power plant. In the root cause analysis of abnormal power generation in power plants, it can quickly inefficient modules and accurately find the core reason for power generation decay, effectively reducing O&M costs and stabilizing the power plant's power generation revenue