GB/T 2951-12 Common Test Methods for Insulation and Coating Materials of Electrical and Optical Cables

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of GB/T 2951-12 test. GB/T 2951.12 is a standard developed by the China Standardization Administration (SAC) for common test methods for insulation and coating materials of electrical and optical cables. Part 12 of this standard specifies methods of thermal aging of these materials.

Thermal aging is a process in which the material is exposed to high temperatures for a specified period of time to evaluate its heat resistance and long-term stability at elevated temperatures. This is an important test for insulation and sheathing materials, as cables are often exposed to high temperatures during laying and operation.

GB/T 2951.12 standard defines two methods for thermal aging of insulation and coating materials:

• Air Furnace Aging Method: In this method, the material is placed in an air furnace at a certain temperature for a certain period of time. The material is then evaluated for changes in physical and electrical properties such as tensile strength, elongation at break, and dielectric strength.
• Aging Method in Oil Bath: In this method, the material is immersed in oil at a certain temperature and for a certain period of time. The material is then evaluated for changes in physical and electrical properties, as in the air furnace aging method.

The standard specifies specific tests to be performed on aged material for each of these methods, along with temperature, time, and other conditions. The standard also provides guidance on reporting and interpreting the results of these tests.

Overall, the GB/T 2951.12 standard provides a standardized and reliable method for evaluating the thermal aging properties of insulation and coating materials for electrical and optical cables, helping to ensure their safe and effective use in a variety of applications.

EUROLAB assists manufacturers with GB/T 2951-12 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.