Product Introduction

The CHT9951A/CHT9951B Hi-Pot Tester is a professional testing instrument specifically designed for solar PV panel quality assurance and safety verification. This advanced testing equipment performs comprehensive electrical safety tests including withstand voltage testing, leakage current measurement, and insulation resistance testing up to 99GΩ. As an essential tool in solar panel production lines, it ensures that manufactured panels meet international safety standards and quality requirements.
Developed by Ooitech (www.ooitech.com), a leading provider of solar panel production line equipment ranging from 5MW to 1GW capacity, this Hi-Pot tester integrates seamlessly into modern solar manufacturing facilities. The device features a clear 95mm×20mm LCD display, adjustable test parameters, and intelligent arc detection capabilities, making it an indispensable component for quality control in G1, M6, M10, M12, MBB, PERC, TOPCon, IBC, ABC, HPBC, shingled, flexible, and thin-film solar panel production.
Technical Specifications
| Parameter | CHT9951A | CHT9951B |
|---|
| Display | 95mm×20mm Single Color LCD | 95mm×20mm Single Color LCD |
| Test Parameters | Withstand Voltage/Leakage Current/Insulation Resistance | Withstand Voltage/Leakage Current/Insulation Resistance |
| DC Output Voltage | 0.1kV-10kV | 0.1kV-10kV |
| AC Output Voltage | ------ | 0.1kV-10kV |
| Voltage Resolution | 0.001kV | 0.001kV |
| Voltage Accuracy | ±3% | ±3% |
| DC Leakage Current | 5mA | 5mA |
| AC Leakage Current | 10mA | 10mA |
| Current Resolution | 1μA | 1μA |
| Current Accuracy | ±(3%+2 digits) | ±(3%+2 digits) |
| Insulation Resistance Range | 100kΩ~99GΩ | 100kΩ~99GΩ |
| Insulation Test Voltage | 0.1kV~2.0kV | 0.5kV-2.0kV |
| Insulation Accuracy | 5% (100kΩ-10GΩ); 20% (10GΩ-99GΩ) | 5% (100kΩ-10GΩ); 20% (10GΩ-99GΩ) |
| Voltage Rise Time | 0.1s~999.9s | 0.1s~999.9s |
| Test Time | 0.1s~999.9s | 0.1s~999.9s |
| Arc Detection | Grade 1-9 (0=OFF) | Grade 1-9 (0=OFF) |
| Frequency | 50Hz/60Hz | 50Hz/60Hz |
| Memory Groups | 6 Groups | 6 Groups |
| Communication Interface | Handler, RS485, RS232 (Optional) | Handler, RS485, RS232 (Optional) |
| Power Supply | 198VAC240VAC, 47Hz63Hz, 100VA | 198VAC240VAC, 47Hz63Hz, 100VA |
| Dimensions | 374mm×280mm×99mm | 374mm×280mm×99mm |
| Weight | 7.5kg | 7.5kg |

Technical Advantages
Precision Testing Capabilities
High Insulation Resistance Range: Measures up to 99GΩ, ensuring accurate detection of even the smallest insulation defects
Ultra-Fine Resolution: Voltage resolution of 0.001kV and current resolution of 1μA for precise measurements
Dual Model Options: CHT9951A for DC testing and CHT9951B with additional AC testing capabilities
Advanced Safety Features
Arc Detection Function: 9-level arc detection (Grade 1-9) with automatic alarm system
Sound and Light Alarm: Immediate visual and audible alerts for test failures or safety issues
Adjustable Test Parameters: Customizable voltage rise time and test duration (0.1s~999.9s)
User-Friendly Operation
Clear LCD Display: 95mm×20mm single-color LCD for easy reading of test results
Continuously Adjustable Output: Flexible voltage adjustment for different testing requirements
Memory Function: 6 memory groups for storing frequently used test configurations
Multiple Communication Interfaces: Handler, RS485, and optional RS232 for seamless integration

Product Applications
Solar Panel Manufacturing Quality Control
The CHT9951A/B is essential for solar panel production lines, performing critical safety tests on finished modules including crystalline silicon (c-Si), thin-film (CIGS, CdTe), and advanced technology panels (TOPCon, HJT, IBC). It ensures compliance with IEC 61215, IEC 61730, and UL 1703 standards for photovoltaic module safety.
Production Line Integration
Pre-Lamination Testing: Verify insulation integrity before final lamination process
Post-Production QC: Final electrical safety verification before packaging
Batch Testing: Rapid testing of multiple panels with saved test configurations
Research & Development: Testing prototype designs and new material combinations
Application Scenarios
Large-Scale Solar Factories: Integration into automated production lines from 5MW to 1GW capacity
Module Testing Laboratories: Independent verification and certification testing
Quality Assurance Departments: Routine safety and performance validation
Solar Panel Repair Centers: Diagnosis and verification of repaired modules
Educational Institutions: Training facilities for solar technology programs

Contact for Purchase
Enhance Your Solar Panel Production Quality with Ooitech's Professional Testing Equipment
For comprehensive solar panel production line solutions and testing equipment, contact Ooitech today:
Email: info@ooitech.com Phone: +86 18571646990
WhatsApp: +86 15961592660
Head Office: Wuhan Yangtze River Center, Wuhan, China
Website: www.ooitech.com
Download Resources:
Watch Our Production Line in Action: Subscribe to our YouTube channel: www.youtube.com/ooitech MBB Full Automatic Solar Panel Production Line
Ooitech specializes in complete solar panel production line equipment design, delivery, training, raw materials supply, and after-sales service. Our product range includes solar cell laser cutting machines, tabber stringers, layup machines, bussing machines, EL testers, laminators, framing machines, and comprehensive testing equipment like the CHT9951A/B Hi-Pot Tester.
Request a Quote Today and discover how Ooitech's testing solutions can optimize your solar panel production quality and efficiency!