Hot Wire Ignition Tester – IEC60695-2-20 HWI Apparatus

Hot Wire Ignition Tester – IEC60695-2-20 Fire Hazard Evaluation for Insulating Materials

The Hot Wire Ignition Tester is a specialized apparatus manufactured by KingPo, designed to assess the ignition susceptibility of solid electrical insulating materials under localized heat stress. It uses a resistively heated Ni/Cr wire (0.50 ± 0.02 mm diameter) wound around the test specimen to simulate overheating from internal components or faults, measuring the time to ignition or sustained burning per IEC TS 60695-2-20:2024 (Hot-wire ignition (HWI) test method) and GB4943.1-2011. This test applies to non-metallic materials in electrical and electronic products, household appliances, and similar equipment where heat sources (length <13 mm) may cause thermal stress leading to fire hazards.

KingPo Factory Advantages

ISO9001 & CE-certified manufacturer with global exports. KingPo has supplied over 120 units of hot wire ignition testers to safety labs and appliance manufacturers in China, Europe, and Southeast Asia since 2021, with CNAS calibration reports available on all equipment. The system supports lifetime free software upgrades and 48-hour on-site response during the warranty period in Dongguan.

Professional Construction & Technical Precision

Key features include:

• Hot Wire: Ni/Cr (80/20) alloy, diameter 0.50 +0.02/-0 mm, length >250 mm – resistance 5.25 Ω/m for stable heating
• Power Control: Density 0–0.31 W/mm ± 0.01 W/mm adjustable, current 0–10 A ± 0.5% – precise simulation of fault conditions
• Winding Mechanism: Spacing 6.3 ± 0.2 mm, configure weight 5.4 N ± 0.05 N – handle-operated for repeatable coil application
• Specimen Support: Height 60 ± 2 mm, electrode distance 35 mm, bearing clearance 70 ± 2 mm – accommodates samples up to 14×20×150 mm
• Chamber Environment: Volume >0.5 m³ with ventilation – ensures safe operation and clear observation
• Repeatability: Winding accuracy 0.05 mm – minimizes test variation

These elements provide accurate HWI assessment with traceable results.

Primary Use Cases & Business Value

The Hot Wire Ignition Tester supports key stages:

• Material Qualification – Determine ignition resistance of plastics and insulators in household appliances
• Component Safety Validation – Test enclosures, connectors, and non-heat-source parts for thermal fault risks
• Product Certification – Generate data for IEC60695-2-20 and GB4943.1 compliance in electrotechnical equipment
• Production QC – Batch verification to prevent fire initiation from overheating components

It enables early identification of ignition hazards, supports safer material choices, and streamlines certification.

Compliance & Regulatory Assurance

Fully compliant with IEC TS 60695-2-20:2024 (latest edition, focusing on HWI method) and GB4943.1-2011 for hot wire ignition testing. Aligned with broader fire hazard standards for electrical safety. Regular calibration of wire resistance, power density, and timing is recommended to maintain accuracy.

Procurement Benefits

Simple handle winding and adjustable power supply reduce setup time. Comprehensive documentation, CNAS-calibrated reports, and lifetime software support ensure reliability. This equipment improves insulating material safety assessment, lowers fire risks, and minimizes compliance issues. Contact us today for your Hot Wire Ignition Tester quote – we’ll respond within 24 hours with detailed technical information and pricing tailored to your needs.

Hot Wire Ignition Tester.pdf