IEC 60811-3-2 Clause 9 Wire and Cable Thermal Stability Tester

The LS-B41 Thermal Stability Tester for Wires and Cables is a precision instrument engineered for evaluating the thermal degradation characteristics of polymeric insulation and sheathing materials used in wire and cable manufacturing. This apparatus maintains a precisely controlled thermal environment at 200±0.5°C, as specified in IEC 60811-3-2 Clause 9, to assess material stability under sustained elevated temperatures.

The system utilizes standardized test media within calibrated glass test tubes to determine the thermal endurance of soft polyvinyl chloride (PVC) and other plastic compounds. This testing verifies material performance retention under specified thermal stress conditions, ensuring compliance with international and national standards for wire and cable product safety and reliability.

Compliance Standards

• IEC 60811-3-2:1985 Insulated and sheathed cables and flexible cords – Part 3-2: Methods of test for sheaths – Thermal stability test
• GB/T 2951.32-2008 Common test methods for insulating and sheathing materials of electric and optical cables – Part 32: Methods specific to PVC compounds – Thermal stability test
• GB/T 8815-2008 Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V
• GB/T 2917.1-2002 Common test methods for insulating and sheathing materials of electric and optical cables – Part 1: General test methods – Section 1: Measurement of thickness and overall dimensions – Tests for determining the mechanical properties

Technical Specifications

• Operating Voltage: AC220~240V 50/60Hz
• Temperature Range: Ambient to 250°C
• Temperature Control Accuracy: ±0.5°C
• Test Media: No. 2 lubricating oil or insulating oil (user-supplied)
• Glass Test Tube Configuration: Manufactured per IEC 60811-3-2 and GB/T 2951.32-2008 requirements
• Heating System: Compliant with IEC 60811-3-2 Clause 9 specifications

Tags: LS-B41, thermal stability testing, wire cable quality control, PVC material testing