Handheld photovoltaic string tester

Handheld photovoltaic string testerIt has important application value in the photovoltaic industry. By accurately measuring the IV curve of photovoltaic modules, the performance of photovoltaic modules can be effectively evaluated, ensuring the efficient operation of photovoltaic power generation systems.

Handheld photovoltaic string tester

1、 Product Introduction

Photovoltaic module IV curve tester, capable of voltage testing up to 400V and current testing up to 20A, can test 1000W photovoltaic modules. It can test the open circuit voltage, short-circuit current, maximum power and other parameters of solar cell modules/arrays, providing users with accurate and efficient volt ampere characteristic testing tools. It can quickly detect the working characteristics of photovoltaic strings under natural light. The equipment is easy to operate, portable, and equipped with high-precision irradiance meters and temperature sensors, which can provide accurate on-site irradiance values and other parameters.

The handheld IV tester adopts one-piece packaging technology, with clear operation interface function instructions, one key detection data export, and a single component/string detection speed of 10 seconds. The fast, accurate and comprehensive detection function can be used as an optional configuration for third-party detection institutions and power station operation and maintenance. The whole machine is equipped with high-precision capacitive/resistive loads, as well as a faster radiometer operation module and corresponding IV curve analysis software. It can analyze IV curves more clearly and has the advantage of continuous IV uninterrupted scanning, which helps to detect the entire photovoltaic power plant system.

2、 Functional Features

1. Touch screen and keyboard operation, including peripheral interfaces, supporting storage space expansion through U port.

2. Conduct outdoor low light volt ampere characteristic testing and provide standard STC testing condition correction.

3. Built in a rich database of solar cell module correction models, covering the products of most module manufacturers, providing reference for the conversion and comparison of test results, and providing users with comprehensive parameter setting functions, making it convenient for users to manually add test correction models.

4. Internally equipped with high-voltage isolation power supply design, providing users with reliable safety assurance.

5. Automatic range switching function, with overvoltage, overcurrent and temperature protection.

6. Equipped with a large capacity replaceable lithium-ion battery to provide sufficient power for testing.

7. It has environmental monitoring functions such as solar panel temperature detection and solar irradiance detection.

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

3、 Technical parameters

1.一般特性

2. Main functions

(1) Measurable parameters: short-circuit current, open circuit voltage, maximum power, peak power point voltage, current, IV curve;

(2) Solar cell module power generation testing and irradiance flux testing functions.

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

(4) Test and display the surface irradiance and back temperature of solar cell modules.

(5) Test waveform storage: Test waveform data and test conditions can be stored in the local memory or external USB drive.

(6) File copying function: It can directly copy the data files stored in the local machine to the USB drive.

(7) Intelligent battery level indicator function.

(8) Real time testing function, convenient for observing the open circuit voltage display value.

(9) Quick short-circuit current testing function.

(10) Calibration database editing function, convenient for users to set testing and calibration parameters by themselves.

3. Main technical indicators

(1) DC voltage measurement range: 5V~400V;

(2) Accuracy of DC voltage measurement: ± 0.2% ± 0.1V;

(3) DC current testing range: 0.5A~20A;

(4) Accuracy of DC current testing: ± 0.2% ± 0.01A.

(5) Accuracy of irradiance testing; ± 3.0% reading.

(6) Temperature testing accuracy: ± 1 ℃.

4、 Product Features and Advantages

1. Product Features

(1) Single component testing: The handheld IV curve tester is equipped withComponent power generation testing function, used for local lighting resource detection. The tester provides a high-resolution testing mode of up to 400 points and Ethernet monitoring function that complies with the Modbus/TCP protocol, meeting the needs of scientific research.

(2) String testing of photovoltaic power plants can quickly test the power generation efficiency, short circuit, power generation, etc. of the entire photovoltaic string, and quickly screen the electrical performance between different strings.

(3) Radiation measurement: Detecting sunlight at the top of the radiometer, measuring radiation temperature and angle.

(4) STC nominal parameter conversion test: IV test, matching current specifications of more than 95% photovoltaic panels, switching between different component parameters more quickly, and automatically calculating the current power generation efficiency and conversion rate of the panels.

(5) Environmental monitoring function: It has environmental detection functions such as solar panel temperature detection and solar irradiance detection, and can provide users with optional radiometer matching.

2. Product advantages

(1) 5-400V high-precision curve testing

Using our company's new resistive testing module, single component testing is more accurate, capable of testing up to 400V series IV curve testing and 20A series parallel testing.

(2) Long lasting battery life

Provides built-in high-capacity lithium battery module, which can be easily replaced as an alternative, with a continuous battery life of up to 8H to provide sufficient charging power for testing.

(3) Range switching

For components/strings of different specifications, the testing range can be automatically switched to provide a more accurate testing range and provide overvoltage and overcurrent protection.

(4) Photovoltaic module correction database

Built in rich database of solar cell module correction models, covering the products of most module manufacturers, providing reference for the conversion ratio of test results and offering users comprehensive parameter setting functions that can be manually added.

(5) High voltage isolation design is safer

The device is equipped with a high-voltage adjacent power supply design, providing reliable safety assurance for users. The maximum open circuit voltage testing range can reach 400V, and it provides up to 1000W photovoltaic array testing function.

(6) Touchscreen panel operation

The host operation panel adopts a touch screen and keyboard operation mode, and the bright LCD screen can display more clearly in sunlight. The whole machine includes rich peripheral interfaces to provide various extended online functions.

(7) National Industry Standards

The equipment complies with international and industry standards and can serve as a third-party measurement basis.

◎ IEC61215-2005 Crystalline Silicon Photovoltaic Modules for Ground Use - Design Qualification and Type Approval

◎ IEC61646-2008 Design and Qualification Specification for Surface Thin Film Batteries

CGC/GF003.1:2009 Technical Specification for Acceptance of Parallel Photovoltaic Power Generation System Engineering Part 1: Electrical Equipment

GB4793.1-2007/IEC60010-1 Safety Requirements for Testing, Control, and Laboratory Electrical Equipment

Requirements for IEC60904-22007 standard solar cells

◎ IEC60891-2009 Temperature and irradiance correction method for the IV measured characteristics of photovoltaic devices

5、 Configuration List