Product Introduction

The CHT9985A Voltage Insulation Tester is a state-of-the-art electrical safety testing instrument designed for comprehensive quality control in solar panel manufacturing and electrical equipment production. This advanced testing system combines three critical safety tests in one robust unit: DC withstand voltage testing up to 12KV, insulation resistance measurement up to 99GΩ, and ground resistance testing with current output up to 100A.
Developed by Ooitech (www.ooitech.com), a leading provider of solar panel production line equipment ranging from 5MW to 1GW capacity, this tester ensures your solar modules meet the highest safety standards and regulatory requirements. The CHT9985A is an essential quality control instrument for manufacturers producing G1, M6, M10, M12, MBB, PERC, TOPCon, IBC, ABC, HPBC, shingled, flexible, and thin-film solar panels.
Technical Parameters

Basic Specifications
| Parameter | Specification |
|---|
| Model | CHT9985A |
| Input Voltage | 220VAC ±10% single phase |
| Frequency | 47-63Hz |
| Fuse Rating | 8A/250VAC |
| Power Consumption | 500W |
| Operating Temperature | 5~50°C |
| Humidity | ≤95% |
DC Withstand Voltage Test
| Function | Range | Resolution | Accuracy |
|---|
| Rated Output | 12KV DC | - | - |
| Voltage Setting | 0-12KV DC | 1V | ±(2% setting +5V) |
| Voltage Display | 0-12KV DC | 0.001KV | ±(3% display +0.005V) |
| Leakage Current High Limit | 0.0-5.000mA | 0.01μA | ±(2% setting +2dgts) |
| Leakage Current Low Limit | 0.00-5.000mA | 0.01μA | ±(2% setting +2dgts) |
| Current Display | 0.0001-5.000mA DC | 0.01mA (0.1μA) | ±(2% display +3dgts) |
| Ramp Time | 0.4-999.9S | 0.1S | ±(0.1% setting +0.05S) |
| Test Time | 0.5-999.9S | 0.1S | ±(1% setting +0.05S) |
| Arc Detection | 0-9 levels | - | Level 0: No detection |
| Voltage Stability | - | - | ±(1% setting +5V) |
Insulation Resistance Test
| Function | Range | Resolution | Accuracy |
|---|
| Rated Output | 3500V DC | - | - |
| Voltage Setting | 500-3500V DC | 1V | ±(3% setting +5V) |
| Voltage Display | 0.500-3.500KV DC | 0.001KV | ±(3% display +5V) |
| Resistance Display | 100kΩ-99GΩ | - | ±(3% display +3dgts) for 100kΩ-9.99GΩ ±(20% display +3dgts) for 10GΩ-99GΩ |
| Resistance High Limit | 100kΩ-99GΩ | - | - |
| Resistance Low Limit | 100kΩ-99GΩ | - | - |
| Delay Time Judgment | 0.1-999.9S | 0.1S | ±(0.1% display +0.05S) |
Ground Resistance Test
| Function | Range | Accuracy |
|---|
| Output Current Setting | 10.0-100.0A | ±(2% display +5dgts) |
| Resistance Upper Limit | 50.0-600.0mΩ (varies with current) | ±(2% setting +3dgts) |
| Resistance Lower Limit | 50.0-600.0mΩ (varies with current) | ±(2% setting +3dgts) |
| Test Time | 0.5-999.9S (0 for continuous) | ±(0.1% setting +0.05S) |
Technical Advantages

Multi-Function Integration
3-in-1 Testing Solution: Combines DC withstand voltage, insulation resistance, and ground resistance testing in a single compact unit
Cost-Effective: Eliminates the need for multiple testing instruments, reducing equipment investment
Space-Saving Design: Optimizes production line layout with integrated functionality
High Precision & Reliability
Superior Accuracy: Industry-leading accuracy of ±2% for critical measurements
Wide Testing Range: DC voltage testing up to 12KV and resistance measurement up to 99GΩ
Stable Output: Voltage stability of ±1% ensures consistent and reliable test results
High Current Capability: Ground resistance testing up to 100A for comprehensive safety verification
Advanced Safety Features
Arc Detection Technology: 9-level adjustable arc detection prevents damage during testing
Programmable Limits: Customizable high and low limits for pass/fail determination
Ramp-Up Function: Gradual voltage increase (0.4-999.9S) prevents sudden stress on test specimens
Automatic Discharge: Safe discharge circuit ensures operator safety after testing
User-Friendly Operation
Digital Display: High-resolution display with 0.001KV precision for voltage readings
Flexible Test Timing: Adjustable test duration from 0.5 to 999.9 seconds
Delay Time Judgment: Programmable delay for accurate resistance measurements
Intuitive Interface: Simple parameter setting and result interpretation
Quality Assurance
Compliance Testing: Meets IEC 61215, IEC 61730, and UL 1703 standards for solar panel testing
Production Line Compatible: Seamlessly integrates with Ooitech solar panel production lines
Data Recording: Test results documentation for quality control and traceability
Product Applications

Solar Panel Manufacturing
The CHT9985A is extensively used in solar module production lines for quality control testing of:
Crystalline Silicon Modules: G1, M6, M10, M12 wafer-based panels
Advanced Cell Technologies: PERC, TOPCon, IBC, ABC, HPBC modules
Innovative Designs: Shingled, half-cut, and MBB (Multi-Busbar) panels
Flexible Solar Panels: Testing of bendable and lightweight modules
Thin-Film Technologies: Quality control for TFM, CIGS, and CdTe panels
Electrical Equipment Testing
Transformers and Motors: Insulation resistance and ground continuity verification
Cables and Wiring: Dielectric strength and insulation integrity testing
Switchgear and Circuit Breakers: Safety compliance testing
Consumer Electronics: Product safety certification testing
Quality Control Processes
Incoming Inspection: Testing raw materials and components
In-Process Testing: Mid-production quality verification
Final Inspection: End-of-line safety and compliance testing
Periodic Maintenance: Regular safety checks of installed equipment
Research & Development
Material Testing: Evaluation of new insulation materials
Product Development: Safety validation during prototype development
Failure Analysis: Investigating insulation breakdown and electrical failures
Standards Compliance: Ensuring products meet international safety standards
Contact for Purchase

Ready to enhance your solar panel production quality control? The CHT9985A Voltage Insulation Tester is your comprehensive solution for electrical safety testing. As part of Ooitech's complete solar panel production line equipment portfolio (5MW to 1GW capacity), this tester ensures your products meet the highest safety standards.
Get Your CHT9985A Today:
Email: info@ooitech.com Phone: +86 18571646990
WhatsApp: +86 15961592660
Head Office: Wuhan Yangtze River Center, Wuhan, China
Website: www.ooitech.com
Additional Resources:
Subscribe to our YouTube channel for the latest updates on solar panel manufacturing technology, equipment demonstrations, and industry insights. Like and subscribe to stay informed about innovations in solar factory equipment!
Why Choose Ooitech?
Complete production line solutions from 5MW to 1GW capacity
Comprehensive equipment portfolio including laser cutting machines, tabber stringers, layup machines, bussing machines, EL testers, laminators, framing machines, and more
Professional training on production processes and equipment operation
Raw material supply and technical support
Global after-sales service network
Contact us today to discuss how the CHT9985A Voltage Insulation Tester can improve your production quality control and ensure compliance with international safety standards!