Application of DDP in electrical industry

DDP is a kind of insulation material which is coated with modified special epoxy insulating resin in diamond pattern on electrical insulating paper. ‌This material is non-adhesive and dry at room temperature (below 35℃), and has excellent insulation properties and stability. ‌‌

Types of DDP

DDP can be divided into many types according to specific application scenarios and performance requirements. The following are several common DDP insulation materials:

DDP diamond dot paper: This is an insulation material with modified special epoxy insulating resin coated in a diamond shape on both sides of the electrical insulating paper. The resin coating of the diamond dot paper is in the shape of dots, which is conducive to the immersion of oil and the discharge of gas in the insulation material, effectively avoiding corona and partial discharge, and ensuring the safety and reliability of the insulation structure.

DDP insulation film: This material has extremely thin thickness and excellent electrical properties, and is often used as the insulation layer of high-voltage electrical equipment.

DDP insulation sheet: It is made of multiple layers of DDP insulation paper or film. It has high mechanical and electrical strength, and is often used in the insulation structure of large electrical equipment.

Characteristics of DDP

Excellent insulation performance: DDP has extremely high electrical strength, which can effectively prevent electrical short circuits and leakage currents, ensuring the normal operation of electrical equipment.

Good mechanical strength: The material has high tensile strength and tear strength, which can withstand greater mechanical stress, and protect electrical equipment from damage.

Weather and heat resistance: This material can remain stable under harsh environmental conditions and is not easy to age, which prolongs the service life of electrical equipment.

Excellent moisture resistance: DDP has been specially treated to effectively prevent moisture intrusion and keep electrical equipment dry.

Easy to process and shape: DDP can be cut, bent and shaped as needed, which is convenient for the manufacture and installation of electrical equipment.

Application of DDP in the electrical industry

Oil-immersed transformer: In oil-immersed transformers, DDP diamond dot paper is widely used for interlayer insulation and interturn insulation. Since the resin coating of the diamond dot paper is in the shape of dots, it is conducive to the immersion of oil and the discharge of gas in the insulation material, effectively avoiding corona and partial discharge, and ensuring the safe and reliable operation of the transformer.

Cable shielding isolation layer: DDP can be used as a shielding isolation layer for cables to effectively prevent electromagnetic interference and signal leakage and improve the transmission performance of cables.

High-voltage motors and electrical appliances: DDP insulation films and insulation sheets are often used in the insulation layer of high-voltage motors and electrical appliances, providing excellent electrical isolation and mechanical support to prevent electrical short circuits and leakage currents.

New energy equipment: In new energy equipment such as wind power and solar energy, DDP is used in the insulation structure of key components such as generators and inverters to ensure the normal operation and safety of the equipment.

As a new generation of high-performance insulation materials, DDP has broad application prospects in the electrical industry. By continuously improving the production process and raw material formula, and improving the electrical properties, mechanical properties and heat resistance of the material, DDP will better meet the needs of electrical equipment manufacturing.