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Ozone Resistance Testing for Electric and Optical Fiber Cables: Understanding IEC 60811-403

Ozone resistance testing plays a crucial role in ensuring the durability and longevity of electric and optical fiber cables in various applications. By subjecting rubber or elastomer compounds to controlled ozone exposure, manufacturers can evaluate the materials’ ability to withstand ozone degradation over time. The standardized test method outlined in IEC 60811-403 specifies the essential components for conducting accurate evaluations, including an ozone test chamber capable of precise ozone generation, a mechanism for circulating ozonized air under controlled humidity and temperature conditions, and a method for determining ozone concentration levels.

In the realm of electric and optical fiber cables, particularly those composed of cross-linked compounds, ozone resistance testing is a vital quality assurance step that is typically conducted at least 16 hours post-extrusion or cross-linking of insulating or sheathing compounds. Prior to ozone exposure, test samples must undergo conditioning to establish a consistent baseline. Through these rigorous testing procedures, cable manufacturers can ensure the durability and performance of their products, instilling confidence in consumers and industry professionals alike.

When assessing insulated cores, a crucial step involves flexing the samples around a solid mandrel crafted from brass, aluminum, or specially treated wood, with the mandrel’s diameter carefully selected based on specific requirements outlined in industry standards. This meticulous testing procedure not only guarantees the reliability of cables under ozone-rich environments but also ensures compliance with stringent performance criteria set forth by regulatory bodies. By adhering to these rigorous testing protocols, manufacturers can deliver high-quality cables that excel in ozone resistance, thus enhancing the overall reliability and performance of electrical and communication networks.

Ozone Resistance Testing for Electric and Optical Fiber Cables: Understanding IEC 60811-403
Equipment Model: TH-OZ-150 Inner Chamber Size: 500*600*500
Power Consumption: 5.5 KW Temperature Range: 0-100℃
Relative Humidity Range: 30%RH~98%RH Temperature Fluctuation: ±0.5℃
Cooling Rate: 20 min from room temp to 0℃ Time Setting: 0~999 hours
Ozone Concentration 1: 25~30 ppm Ozone Concentration 2: 250~300 ppm
Sample Rack Rotation Speed: 30r/min Air Speed: 280L/h-560L/h
Elongation Rate: 5%~35% Controller: Programmable Color Touch 
Test Standard: IEC-60811-403 Power Supply: 220VAC-60Hz
Testing Purpose: Ozone test chamber for elastic material testing.
Material of Testing Chamber: Stainless Steel 304, 1.2mm Thickness|Ozone Resistance Testing Equipment
Equipment Configurations: Dynamic product rack and static product rack composed of metal rods.
Controller Device: Programmable color touch controller, editable test programs, equipped with R-232 interface for computer connection.
Cooling System: Utilizes compressor from French Tecumseh, environmentally friendly refrigerant.
Humidification System: External isolation, stainless steel surface evaporative humidifier.
Ozone Generator: Ozone generator inside the chamber provides ozone gas.
Temperature Sensors: Temperature sensor: PT-100 Class A, resolution ±0.001℃; Humidity sensor: Dry-wet bulb, resolution ±1%RH; Ozone sensor.
Safety Protection: Humidifier combustion protection, over-temperature protection, over-current protection, high-pressure switch for refrigerant, leakage protection, etc.
Packaging Description: Standard wooden export packaging suitable for sea, air, and railway transportation.

The IEC 60811-403 ozone test chamber must be carefully installed in an environment that meets specific conditions to ensure its optimal performance and longevity. When setting up the ozone test chamber, it is essential to consider the following factors: By adhering to these installation guidelines, you can create an optimal testing environment for the IEC 60811-403 ozone test chamber, ensuring accurate and reliable test results for your applications. Prioritize these environmental conditions to maintain the performance and longevity of the ozone test chamber while enhancing the safety and efficiency of your testing processes.

1. Temperature Regulation: Maintain a consistent temperature range between 5°C to 35°C within the testing area. Fluctuations in temperature can impact the accuracy and reliability of the test results. Obviously, The ozone test chamber also works for +45°C to +85°C.
2. Relative Humidity Control: Keep the relative humidity level for this ozone test chamber below or equal to 85% to prevent moisture-related issues that could affect the chamber’s operation and the integrity of the tests. This contributes to the long service life of the equipment.
3. Ventilation: Adequate ventilation is crucial to prevent the accumulation of ozone and maintain a safe working environment. Proper ventilation can also help in regulating the temperature and humidity levels inside the chamber. Based on past testing experience, The higher the temperature in the test area, the higher the ozone concentration ratio, to a certain extent.
4. Pressure Range Compliance: Ensure that the pressure within the chamber remains within the range of 86Kpa to 106Kpa to maintain the desired testing conditions and avoid any deviations that could impact the test outcomes. In case your have a different pressure conditions, Please have a check with our technician.
5. Safety Precautions: Avoid installing the ozone test chamber near any flammable materials to reduce the risk of fire hazards. Additionally, minimize exposure to strong vibrations, direct sunlight, heat sources, intense airflow, and powerful electric fields to protect the chamber’s components and ensure consistent testing conditions.

In the realm of electric and optical fiber cables testing procedures, meticulous care and precision are crucial for ensuring the quality and reliability of cable sheathing materials. Following the conditioning process, wherein the test pieces are subjected to a specific environment to stabilize their properties, they are then ushered into the controlled confines of the ozone test chamber. Here, under the watchful gaze of the test cock, the test pieces are strategically positioned with a requisite distance between them to facilitate thorough examination.

Maintaining a constant temperature and circulating dry air infused with the precise ozone concentration as stipulated by industry standards, the test pieces undergo scrutiny to assess their resilience and integrity in the face of challenging conditions. Upon completion of the designated testing period, the test pieces are carefully extracted from the chamber and meticulously inspected for any signs of structural compromise. The presence of cracks or deviations from the established criteria would indicate a failure to meet the stringent quality benchmarks set forth in the cable standard.


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