Portable IV Curve Tester

1、Portable IV Curve Tester Instrument Overview

The product, Portable IV Curve Tester, can test voltages up to 1500V and currents up to 20A, capable of testing photovoltaic strings up to 30kW. It can test parameters such as open-circuit voltage, short-circuit current, and maximum power of solar cell modules/strings, providing users with a precise and efficient volt-ampere characteristic testing tool. It can quickly detect the operating characteristics of photovoltaic strings under natural sunlight. Portable IV Curve Tester is easy to operate and portable, and equipped with high-precision photoelectric radiation sensors and temperature sensors, providing accurate on-site irradiance, backsheet temperature, and other parameters.

Portable IV Curve Tester adopts integrated packaging technology, with a clear and intuitive user interface, one-click data export, and a single module/string testing speed of 5 seconds. Its fast, accurate, and comprehensive testing capabilities make it an ideal choice for third-party testing agencies and power plant maintenance. The entire unit is equipped with a high-precision capacitive load and a high-precision, large-range photoelectric radiation sensor module, which can more accurately analyze the IV curve and has the advantage of continuous IV scanning, thus assisting in the detection of the entire photovoltaic power station system.

2、Portable IV Curve Tester Main Functions and Features

1. Touchscreen and keyboard operation, including peripheral interfaces, charging port, USB export port, and 485 slave module interface, exporting internal test data via USB.

2. Outdoor low-illuminance volt-ampere characteristic testing, built-in universal STC conversion model, one-button rapid testing.

3. Internal high-voltage isolation power supply design, providing reliable safety for users.

4. Safety protection design, continuous testing self-protection mechanism and hardware protection, with overvoltage, overcurrent, and temperature protection.

5. Built-in high-capacity lithium-ion battery, providing ample power for testing.

6. Environmental monitoring functions such as solar photovoltaic panel temperature detection and solar irradiance detection.

7. Equipped with an adjustable photoelectric radiation sensor clamp and a press-type temperature probe installation tool, adaptable to multiple photovoltaic panel sizes, providing more accurate measurements and convenient and quick installation.

8. Measurable parameters: I-V curve, P-V curve, short-circuit current, open-circuit voltage, maximum power, maximum voltage, current, solar panel temperature, irradiance, etc.

3、Portable IV Curve Tester Technical Parameters

1. Instrument Characteristics

2.Instrument Functions

(1) Measurable parameters: short-circuit current, open-circuit voltage, maximum power, peak power point voltage, current, IV and PV curves.

(2) Solar cell module power generation test, radiation test, and real-time power and irradiance curve functions.

(3) Instant data conversion to STC (Standard Test Conditions) data function.

(4) Measurement and display of solar cell module surface irradiance and back surface temperature.

(5) Current and voltage detection gain self-adjustment function, automatically switching the test range according to the current and voltage of the connected module to achieve high-precision detection.

(6) Automatic test data storage function, storing up to 30 days of test data.

(7) Storage of raw test data points, storing test waveform data and test conditions in the device's internal storage.

(8) USB flash drive data export function, directly copying historical test data files stored in the device to a USB flash drive.

(9) Intelligent battery power indicator function.

(10) Rapid short-circuit current test function.

(11) Overvoltage and overcurrent protection functions.

3. Detailed Instrument Measurement Parameters

4、Portable IV Curve TesterProduct Functions and Advantages

1. Product Functions

(1) Single Module Testing: The portable photovoltaic IV curve tester features single-module IV/PV testing, displaying test results in as little as 5 seconds. Single-module testing is more accurate and faster.

(2) String Testing: The device provides solar panel string testing, supporting string parameters up to 1500V open-circuit voltage and 20A short-circuit current. It can quickly test parameters such as open-circuit voltage, short-circuit current, and maximum power point of the entire photovoltaic string, and quickly screen the electrical performance between different strings.

(3) Continuous Testing: The portable IV tester features continuous testing. With the relevant parameters configured, it can continuously test IV/PV, total radiation, and power generation, and automatically store the test data.

(4) Irradiance Measurement: The photoelectric radiation sensor is installed parallel to the solar panel using the matching mounting clamp to measure real-time irradiance.

(5) Backsheet Temperature Measurement: Using a press-type installation tool, the temperature sensor probe is installed close to the backsheet of the solar module, resulting in more accurate backsheet temperature measurement. Installation and disassembly are also more convenient.

2. Product Advantages

(1) High-Precision Curve Testing

Utilizing a high-precision capacitive load combined with a high-speed sampling algorithm, it achieves full-range scanning from open-circuit voltage (Uoc) to short-circuit current (Isc). The entire test cycle is controlled within milliseconds (ms), effectively avoiding errors caused by irradiance fluctuations and achieving high-precision IV and PV curve measurements. Single-module testing is more accurate and faster.

(2) Automatic Range Switching

For different specifications of modules/strings, the internal system automatically switches test ranges for more accurate module/string parameter measurements.

(3) Automatic Test Data Storage

IV curves, PV curves, total radiation, power generation test data, and environmental parameters for the current measurement are automatically stored. Raw voltage and current data are automatically stored and can be exported to a USB flash drive for convenient subsequent analysis and processing.

(4) Long Battery Life

Built-in high-capacity lithium battery provides up to 9 hours of continuous battery life for testing. (5) Enhanced Safety with High-Voltage Isolation Design

The equipment features an internal high-voltage isolation power supply design, providing reliable safety for users. The open-circuit voltage test range can reach up to 1500V, enabling testing of photovoltaic arrays up to 30KW.

(6) Touchscreen Operation

The main unit features a touchscreen and button operation. The bright LCD screen is clearly visible even in sunlight. The entire unit includes a rich array of external interfaces.

(7) National Standards and Industry Benchmarks

◎IEC 61215-2005 Ground-based Crystalline Silicon Photovoltaic Modules—Design Qualification and Approval

◎IEC 61646-2008 Ground-based Thin-Film Cell Design and Qualification Specification

◎CGC/GF003.1:2009 Technical Specification for Acceptance of Grid Photovoltaic Power Generation Systems—Part 1: Electrical Equipment

◎GB 4793.1-2007/IEC 60010-1 Safety Requirements for Electrical Equipment for Testing, Control and Laboratory Use

◎IEC 60904-22007 Requirements for Standard Solar Cells

◎IEC 60891-2009 Temperature and Irradiance Correction Methods for Measured IV Characteristics of Photovoltaic Devices