Hands-On Learning, Powering America Forward

PV String Maximum Power Current (Imp) Testing

 

VR, ILV and interactive learning modules

CONTENT TYPE

VR, ILV, Interactive Modules

3-hour training duration

DURATION

2 Hours

Technician training audience

TARGET AUDIENCE

Technician

VR and web-based course delivery

COURSE DELIVERY

VR or WEB Based

0.2 continuing education credits

Credits : - 0.2

Four-step competency-based learning model: Learn, Assess, Evaluate, and Implement.

About the Course:

This PV String Maximum Power Current Testing microcredential trains PV technicians to accurately perform maximum power current (Imp) testing on photovoltaic (PV) strings to verify system performance, optimize energy production, and ensure proper operation under real-world conditions. 

Learners will practice industry-standard procedures including using digital multimeters and clamp meters, measuring DC string current at maximum power conditions, comparing measured values with expected performance, identifying underperforming strings, and verifying electrical continuity throughout the PV array. The course emphasizes precision, safety, and compliance with industry standards to maximize system efficiency and support effective troubleshooting. 

Technicians will gain hands-on experience in measuring DC string current, diagnosing performance issues, and ensuring safe, reliable, and efficient PV system operation.

Learning Objectives:

  • Understand the purpose of maximum power current (Imp) testing in PV system performance verification 
  • Identify tools used for DC string current testing, including clamp meters and multimeters 
  • Measure DC string maximum power current accurately
  • Compare measured Imp values with expected system performance
  • Identify underperforming strings and current imbalances
  • Detect wiring faults and electrical issues affecting power output
  • Follow safe procedures while performing live DC electrical testing
  • Document and report test results accurately

Course delivered through our LMS and accessible in both VR and web. Learn on the web anytime, or enjoy immersive VR training with your own Oculus VR headset.

Solar technician performing AC voltage testing on a solar PV system

 

Workforce Development

Technician conducting solar inverter voltage diagnostics and electrical testing

At ImmerseLearn, we equip solar technicians with essential electrical testing and diagnostic skills required for modern PV installations. This microcredential strengthens troubleshooting abilities, performance verification, and safety awareness through immersive VR-based learning.

Maximum Power Current Measurement Techniques −
Learn how to properly measure DC string maximum power current (Imp) using industry-standard testing equipment. Technicians develop the skills needed to verify string performance, evaluate current output, and confirm efficient system operation under normal operating conditions.
Safe DC Electrical Testing Practices +
Practice critical safety procedures while performing live DC current measurements, including proper PPE usage, safe meter handling, and precautions when working with energized photovoltaic systems. Emphasis is placed on minimizing electrical hazards and protecting both personnel and equipment.
System Performance Analysis and Diagnostics +
Understand how to evaluate measured Imp values to identify underperforming strings, detect electrical faults, and verify proper system operation. Technicians will learn to troubleshoot current deviations and ensure optimal energy production across the PV array.
Testing and Compliance +
Apply maximum power current (Imp) testing procedures to validate PV string performance and compliance with industry electrical standards. Learners complete the process by verifying system efficiency, documenting test results, and supporting reliable long-term solar system operation.

By completing this microcredential, technicians will gain the confidence and technical expertise needed to perform accurate DC string maximum power current (Imp) testing, verify PV string performance, troubleshoot electrical issues, and support safe, efficient, and high-performing solar PV installations.