UL 746A High Current Arc Ignition Test System

UL 746A High Current Arc Ignition Test System – BONAD Polymer Material Flammability Test Chamber

Standards:

• IEC 60950-1:2020 “Information technology equipment – Safety – Part 1: General requirements”.
• BS EN 60950-1:2020 “Information technology equipment – Safety – Part 1: General requirements”.
• BS 7002:2000 “Specification for Safety of Information Technology Equipment Including Electrical Business Equipment”.
• UL 746A:2021 “UL Standard for Safety Polymeric Materials – Short Term Property Evaluations”.
• IEC 60947.1: 2020 “Low-voltage switchgear and controlgear – Part 1: General rules”.
• IEC 730.1:1993.
• GB 4943.1-2022 “Safety of Information Technology Equipment”.
• IEC 60664-1:2020 “Insulation coordination for equipment within low-voltage supply systems – Part 1: Principles, requirements and tests”.

Applications:

This flammability test chamber is ideal for distinguishing the resistance of polymer materials to arc power ignition. It is suitable for testing electronic and electrical products as well as household appliances.

Features:

1. High Current Output: Capable of generating currents in the thousands of amperes to simulate real-world extreme conditions.
2. Precise Control: Features precise current and time control functions for customizable experimental parameters.
3. Data Acquisition and Analysis: Equipped with an advanced data acquisition system for real-time monitoring and subsequent analysis.
4. Safety Protection Mechanism: Includes multiple safety measures like overcurrent and overheating protection to prevent equipment damage or operator injury.
5. Modular Design: Easy maintenance and upgrade capabilities with customizable options based on specific needs.
6. Strong Durability: Constructed from high-strength materials suitable for harsh environments.
7. Customization Options: Tailored solutions available according to specific test requirements.

Working Principle:

The working principle involves simulating potential electric leakage on insulators caused by different polarities among live parts or between live parts and grounded metal parts. The system uses dual electrodes with a specific current (33A) and power factor (COSφ0.5). It strikes arcs at a speed of 254mm/s with a frequency of 40 times/minute, repeating up to 200 times on the specimen’s surface. The high current arc ignition performance (HAI) is assessed based on whether the sample ignites.

Technical parameters: