IEC 60112 CTI Test Machine High Tracking Tester for Insulating Materials
Product Overview
The Top Test TT-01 Tracking Index Test Apparatus is a professional-grade instrument designed to evaluate the resistance of solid insulating materials against electrical tracking under wet and contaminated conditions. Fully compliant with IEC 60112:2020, GB/T 4207-2022, UL 746A, and ASTM D3638, it delivers accurate, repeatable results for determining the Comparative Tracking Index (CTI) and Proof Tracking Index (PTI)—critical safety metrics for electrical components and materials.Ideal for quality control laboratories, R&D centers, and manufacturing facilities across the electrical, electronics, and automotive industries, this unit ensures your products meet global safety standards and mitigate risks of insulation failure, arc tracking, and fire hazards.
Core Working Principle
The instrument simulates real-world environmental stress by combining high-voltage electric fields with contaminated electrolyte droplets on the surface of insulating material specimens. Here’s the step-by-step process:
- Electrode Application: A pair of precision-machined platinum electrodes (2mm×5mm) is pressed onto the specimen surface at a standardized 60° angle with a contact force of 1.0N±0.05N and a spacing of 4.0mm±0.01mm.
- Voltage Supply: An adjustable AC voltage (100V~600V, 25V 分度) is applied between the electrodes to create a controlled electric field.
- Contaminant Drip System: The unit automatically dispenses 0.1% ammonium chloride (NH₄Cl) solution (simulating moisture/dust contamination) at a rate of 1 drop per 30 seconds from a height of 35mm±5mm, with a droplet volume of 20–23mm³.
- Tracking & Failure Detection: As the conductive solution wets the surface, the material’s resistance drops, causing localized heating, arcing, and potential carbonization. The system continuously monitors leakage current; if current exceeds 0.50A±10% for 2.00s±10%, the test aborts automatically.
- Index Calculation: CTI is defined as the highest voltage the specimen withstands for 50 drops; PTI is the highest voltage for 100 drops.
Key Features & Advantages
Precision & Compliance
- Full Standard Compliance: Meets the latest IEC 60112:2020, GB/T 4207-2022, UL 746A, and ASTM D3638 standards, ensuring global market access for your products.
- High-Accuracy Components: 99.9% pure platinum electrodes for long-term stability and precise test results; digital display for voltage, current, drip count, and test time.
Intelligent Control System
- PLC + Touch Screen Interface: Intuitive operation with one-key start/stop, parameter presetting, and real-time data monitoring. Automatically records test results and supports data retrieval for quality traceability.
- Advanced Drip System: Precision peristaltic pump ensures consistent droplet timing (30s±0.1s) and volume; drip count is programmable (1~9999), with 50 drops completing in 24.5min±2min.
Safety & Durability
- Comprehensive Safety Protection: Equipped with over-voltage/over-current protection, interlocked safety door, and emergency stop button to ensure operator safety during high-voltage tests.
- Robust Construction: Stainless steel test chamber and components resist corrosion and wear; built-in exhaust system (ø100mm) removes arc-generated fumes for a safe working environment.
Technical Specifications
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| IEC 60112:2020, GB/T 4207-2022, UL 746A, ASTM D3638 |
| 100V~600V (25V ，adjustable) |
| 2mm×5mm platinum, 60° angle, 4.0mm spacing, 1.0N±0.05N force |
| 30s±0.1s interval, 35mm±5mm height, 0.1% NH₄Cl solution |
| Leakage current ≥0.50A for ≥2.00s (auto-shutdown) |
| 1~9999 (programmable), 50 drops/100 drops test modes |
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| 1200mm (L) × 600mm (W) × 950mm (H) |
| Engineering plastics, ceramics, PCB substrates, insulation components |
Typical Applications
This CTI Test Machine is indispensable for ensuring product safety in the following sectors:
- Electrical & Electronics: Household appliances (washing machines, air conditioners), low-voltage switch gear, sockets, plugs, and connectors.
- Automotive & Electronics: Automotive wiring insulation, ECU casings, and charging components.
- Materials Industry: Engineering plastics (PA66, PC, PBT), epoxy resins, and composite insulation materials.
- Certification & Testing: Third-party testing institutions, product certification bodies, and R&D centers for quality verification.
Why Choose Top Test?
- Professional Manufacturing: Specialized in high-precision electrical testing equipment with years of R&D experience, ensuring product reliability and performance.
- Customizable Solutions: Supports customized configurations (e.g., extended voltage range, multi-specimen fixtures) to meet specific customer requirements.
- Global After-Sales Service: Provides one-year warranty, on-site installation, technical training, and long-term technical support to ensure smooth operation of your testing equipment.
FAQ
Q1: What is the difference between CTI and PTI?
A: CTI (Comparative Tracking Index) is the highest voltage a specimen withstands for 50 drops of electrolyte, while PTI (Proof Tracking Index) is the highest voltage for 100 drops. Both metrics evaluate a material’s resistance to tracking under prolonged contamination.
Q2: Can this machine test multiple specimens simultaneously?
A: Yes, the unit is equipped with a multi-specimen stage, allowing parallel testing of multiple samples to improve efficiency.
Q3: Does the equipment come with pre-installed standard test programs?
A: Absolutely. Preloaded with IEC 60112 standard test procedures, and users can also customize test parameters (voltage, drip count, etc.) via the touch screen.
Q4: What maintenance is required for the platinum electrodes?
A: Platinum electrodes have a long service life. Regular cleaning to remove surface carbon deposits is recommended to maintain test accuracy. We provide detailed maintenance guidelines and spare parts support.
