PV Array Evaluation System

Comprehensive PV Array Evaluation System.

Measure the performance of multiple individual modules in a string with a single sweep!

The PV Array Evaluation System provides researchers and operations and management organizations the data to quickly identify underperforming PV modules. By simultaneously measuring every module in a string, the system speeds characterization and improves measurement accuracy.

System Structure

The system includes four basic components:

Multi-Module I-V Base Unit
Measures current, voltage, temperature, and optional irradiance and environmental inputs
Multi-Module Voltage Sensing Units
Measures voltage for up to three modules each
Control Computer
Wireless data acquisition and system control
Your String Level I-V Curve Tester
Sweeps the I-V of the string

The PV Array Evaluation System uses a single String Level I-V Tester, a single Multi-Module I-V Base Unit and as many Multi-Module Voltage Sensing Units as needed to measure full voltage data for every module in the string. This configuration gathers I-V data for all connected string modules in a single sweep.

Reduce Uncertainties

Due to:

  • Irradiance measurement
  • Sweep timing
  • Irradiance variations

Save time


  • Simplified workflow
  • Streamlined data management
  • Real time issue identification

Wireless Synchronization and Communication

Wireless communication eliminates long, bulky wires from your work area. Each Unit gathers data from one to three modules and transmits it wirelessly to a computer.

  • Increased worker safety
  • Reduced workplace clutter
  • Faster setup and cleanup
  • Simplified connection management

System Features

  • Portable
  • Weather resistant
  • 3 modules measured per unit
  • 2 thermocouple inputs
  • Synchronized measurements
  • Measurement with external load
  • Wireless communication
  • Environmental sensing (Optional)
  • Irradiance sensing (Optional)

Configuration and Specifications

You can configure your system to include the number of units needed to match the number of modules your array. You can utilize optional irradiance and environmental inputs for pyranometers, irradiance sensors, temperature sensors, wind speed gauges and more. Contact pvmsales@pvmeasurements.com with details on your array configuration, modules and measurement needs and we will help you configure the system to suit your application.

PV Array Evaluation System Specifications
Maximum System Voltage 1000 V
Maximum Unit Voltage 210 V
Voltage Range 70 V
Maximum Current 10 A
Current Range 10 A
Electrical Measurement Uncertainty +/-0.5% or better for voltage and current
Isc Determination Controlled by external load
Quadrants Measured Controlled by external load
Sweep Time Controlled by external load - 10 ms to 10 s
Sweep direction Controlled by external load
Sweep Interval Controlled by external load
Data Points Up to 2000
System Control Laptop with sunlight readable display
User Interface Intuitive graphical user interface
Analytics Simple on-system analysis of I-V curves
Parameter Output Voc, Isc, Vmp, Imp, Pmp, FF, Efficiency, performance ratio, reference cell irradiance, temperature, sweep parameters, and accessory voltage readings
Data Output Raw data, individual I-V curves, string summary data
Data Format Tab delimited text files
Environmental Inputs
  • 2 T-type thermocouple inputs, measured once per sweep

  • 1 current input (Optional)

  • 3 voltage inputs, measured once per sweep (Optional)
Battery Life Minimum 8 hour running time; charger compatible with 115 VAC and 230 VAC
Cables 2 m current and voltage cables with MC4 connectors
Call +1 303.386.3950 or email pvmsales@pvmeasurements.com to discuss your photovoltaic characterization needs.