ASTM D2303 tracking index tester
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Standards
The tester complies with the following national, industry, and international standards:
GB/T 4207-2003: Determination of comparative and proof tracking indices of solid insulating materials under wet conditions
IEC 60112: Test methods for electric strength and tracking resistance of solid insulating materials
UL 746A: Plastic Materials – Short Term Property Evaluations
IEC 60216: Thermal aging tests for electrical insulating materials
ASTM D2344: Standard methods for insulation material aging tests
IEC 60529: Degrees of protection provided by enclosures for electrical equipment
GB/T 5169: Safety testing standards for electrical products
Specifications
| Parameter | Specification |
|---|---|
| Electrode material | Tungsten steel (test electrode), stainless steel (electrode rod) |
| Electrode size | (2 mm ±0.1 mm) × (5 mm ±0.1 mm) × (40 mm ±5 mm) |
| Electrode slope | 30° ±2° |
| Electrode spacing | 4.0 mm ±0.01 mm |
| Electrode pressure | 1.00 N ±0.01 N |
| Test solution resistance | Solution A: 0.1% NH4Cl, 3.95 ±0.05 Ω·m; Solution B: 1.98 ±0.05 Ω·m |
| Droplet device | No manual adjustment required; easy to operate |
| Droplet height | 35 mm ±5 mm (adjustable) |
| Droplet interval | 30 s ±0.01 s (pre-settable); 50 droplets ≈ 24.5 min ±2 min |
| Number of droplets | 1–9999 (pre-settable) |
| Test wind speed | 0.2 m/s |
| Test voltage | 100 V – 600 V (25 V increments, adjustable) |
| Current limit | 1.0 A ±0.1 A (voltage drop ≤10%) |
| Tracking detection | 0.50 A ±10%, 2.00 s ±10% |
| Exhaust | Ø100 mm exhaust port, top anti-backflow silent exhaust device |
| Working environment | 0–40 °C, relative humidity ≤80% |
| Power supply | 220 V 50 Hz, 0.6 kVA |
| External dimensions | 1160 mm × 600 mm × 1310 mm (including feet) |
Features
Fully Automatic Operation: PLC and touch screen control for voltage adjustment, droplet control, and current measurement. Minimizes human error and increases testing efficiency.
Precise Droplet Control: Stepper motor controlled droplet device ensures accurate, adjustable droplet volume, complying with international standards.
Real-time Data Monitoring: Voltage, current, droplet count, and other parameters are displayed in real-time; results are automatically saved and report generation is supported.
Efficient Exhaust System: Silent, anti-backflow exhaust removes fumes quickly, maintaining a safe testing environment.
Multi-functional Settings: Adjustable droplet time, voltage, and current to accommodate various materials and standard requirements.
Safety Features: Overcurrent protection, test door status indicator, and electrical isolation ensure operator safety.
Accessories and Consumables
| Accessory | Quantity | Description |
|---|---|---|
| Electrode assembly | 1 | Tungsten steel test electrode + stainless steel rod, compliant with specifications |
| Droplet device | 1 | Ensures precise droplet application, adjustable droplet volume |
| Droplet container | 1 | For test solution, supports accurate droplet control |
| High-precision flow meter | 1 | Ensures uniform and precise droplet volume |
| Gas interface | 1 | For connection to user-supplied gas source (e.g., LPG) |
| Specimen holder | 1 | Supports different shapes and sizes, ensures stability |
| Temperature sensor | 1 | Measures and controls temperature during testing |
Test Principle
The Leakage Current / Tracking Tester applies voltage across the surface of solid insulating materials while dripping a defined concentration of liquid (e.g., NH4Cl solution) between electrodes. The combination of electric field, voltage, current, and droplet count simulates surface tracking and erosion phenomena. The tester measures tracking onset time and damage depth, evaluating the material’s durability and safety in humid electrical environments.
Test Procedure
Prepare Specimens: Clean specimens and fix securely in the holder.
Set Test Parameters: Use touch screen to set voltage, current, droplet time, and droplet count according to standards.
Start Testing: Click “Start”; device begins voltage application and droplet delivery.
Monitor Test: Data including voltage, current, and droplet count is automatically recorded.
Complete Test: Upon completion, the device stops voltage, retracts mechanisms, and saves results for analysis.
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