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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