BDV stands for Breakdown Voltage—the voltage at which the insulating oil fails to prevent electrical discharge.

The BDV value of transformer oil is the voltage at which the oil fails to insulate against electrical discharge; high-quality oil generally exhibits a BDV of over 30 kV, although the exact value depends on its condition and purity.

Particles are removed using filters with varying pore sizes. Coarse filters capture larger debris, while fine filters remove microscopic particles that can affect oil performance.

Eco-friendly transformer oils are plant-based, biodegradable, and safer for the environment compared to traditional mineral oils.

Bitumen emulsions are liquid at ambient temperatures due to the dispersion of bitumen in water, allowing for cold application without heating. Traditional bitumen requires heating to become workable. Emulsions are safer to handle, reduce energy consumption, and are used in various maintenance and surface treatment applications.

Common additives are polymers (SBS, SBR, EVA), crumb rubber, polyethylene, polypropylene, nanoclays, carbon nanotubes, fibers, and chemical agents like sulfur. These additives modify the physical and chemical properties of bitumen to improve performance.

A bitumen emulsifier is a chemical additive used to stabilize the mixture of bitumen and water in an emulsion. It works by reducing the surface tension between the bitumen droplets and the water, allowing the bitumen to disperse evenly throughout the aqueous phase. Emulsifiers are typically surfactants that can be anionic, cationic, or non-ionic, affecting the charge of the bitumen droplets and influencing how the emulsion interacts with aggregates. The choice of emulsifier impacts the setting time, adhesion properties, and overall stability of the bitumen emulsion.

A high-performance condensate polishing system is characterized by its ability to efficiently remove dissolved salts, suspended particles, and organic contaminants, ensuring high-purity water or condensate. Key features include high-quality ion exchange resins with a long service life, advanced filtration technology for removing particulates, and automated regeneration systems to reduce downtime and maintenance costs. High-performance systems also incorporate real-time monitoring and control capabilities to track parameters such as conductivity and pH, ensuring consistent operation. Regular maintenance, including resin regeneration and filter replacement, is essential to maintain optimal performance over time.

The frequency of Hydraulic Oil Filter Replacement depends on several factors, including system usage, oil contamination levels, and the type of filter being used. Generally, filters should be replaced according to the manufacturer’s recommendations, which are based on specific operational conditions. For heavy-duty or high-contamination environments, filter replacements may be required more frequently, such as every 500 to 1,000 operating hours, to ensure continuous protection of hydraulic components. In less demanding systems with cleaner oil, filters might last up to 2,000 or more hours. Regular monitoring of oil quality and filter condition through oil analysis can also determine the optimal replacement schedule. Signs that a filter needs replacement include a noticeable drop in system pressure, increased oil contamination levels, or visible clogging of the filter media. Adhering to a consistent replacement schedule is crucial for maintaining system integrity, preventing wear and tear on hydraulic components, and ensuring efficient system performance.

Gas content in wind turbine transformer oil is reduced using vacuum degassing. The oil is heated and exposed to a vacuum, which lowers the pressure, allowing trapped gases to evaporate and escape. This process removes harmful gases like oxygen, nitrogen, and hydrogen, which can lead to oxidation and affect the oil’s dielectric strength, improving the overall performance and lifespan of the transformer.