IEC 60112 Tracking Index Tester for CTI PTI Testing
The intelligent tracking resistance tester, developed by GOLD, is an advanced testing device for determining the PTI (Positive Tracking Index) and CTI (Comparative Tracking Index) of solid insulating materials. This apparatus applies alternating voltage between standard platinum electrodes while dripping ammonium chloride-contaminated electrolyte at specified intervals and heights, simulating tracking and breakdown phenomena on insulation surfaces under combined electric field and contaminated medium conditions.
The system features intelligent PLC and touchscreen control, ensuring precise management of electrode pressure, dripping sequence, and voltage parameters. This results in excellent test repeatability, making it ideal for electrical insulation material manufacturers, electrical component producers, plastic housing manufacturers, third-party electrical testing institutions, and research laboratory applications.
This tester is applicable to various solid insulating boards, electrical components, and disc-shaped insulating substrates used under alternating voltage conditions. Through standard platinum electrode and quantitative contaminated liquid drop testing, it quantitatively evaluates insulation surface resistance to leakage tracking in electric field and contaminated medium coupling environments, determining both CTI tracking index and PTI tracking resistance index.
- IEC 60112 "Solid insulating materials - Determination of tracking resistance index and relative tracking resistance index"
- GB 4207 "Solid insulating materials - Determination of relative tracking resistance index and tracking resistance index under humid conditions"
| Parameter | Specification |
|---|---|
| Test Chamber | Internal volume > 0.5m³, constant internal air velocity 0.2m/s |
| Platinum Electrode Configuration | Equipped with 150g±0.01g force calibration device, includes 4mm dedicated gauge |
| Test Solutions | Standard preparation of two ammonium chloride solutions (A and B) with conductivity parameters meeting specifications |
| Electrical System | Test voltage adjustment range 100V~600V, power supply 2100W, maximum operating current 3A |
| Dropping System | Total drop count 1~9999 (configurable); real-time digital display for drop count statistics |
| Sample Compatibility | Maximum sample size: Φ90mm×20mm |
| Power Supply | AC220V, 1KW, suitable for 48~60Hz power frequency |
- PLC + Touchscreen Intelligent Control System: Complete program logic handled by PLC with visual touchscreen interface for parameter setting; intuitive operation with direct test data viewing and high automation
- High-Precision Standard Platinum Electrode Assembly: Electrode dimensions, angles, and installation spacing strictly conform to national standards; precise constant electrode pressure with force verification
- Precise and Controllable Drip Mechanism: Finely adjustable drip interval, drop height, and droplet weight; large preset total drop range with real-time digital counting
- Stable High-Voltage Test Power Supply: Wide voltage regulation range with sufficient output power; excellent voltage drop control and precise current threshold matching
- Enclosed Test Chamber: Sufficient chamber volume with corrosion-resistant electrostatic high-temperature baked paint; standard constant-speed exhaust structure
- High Sample Versatility: Adapted for installation and positioning of conventional circular insulating samples; convenient clamping with stable positioning
Operators should thoroughly understand IEC 60112 and GB 4207 test specifications. Before testing, verify electrode spacing, electrode pressure, and drip line flow. Check test solution conductivity and perform no-load test runs of control systems and dripping mechanisms.
Prepare ammonium chloride solution at required concentration, securely clamp samples, adjust electrodes to correct positions, and set test parameters including voltage and total drop count before initiating testing procedures.
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