Transformer Oils for Electrical Equipment

High-Quality Transformer Oils for Reliable Insulation and Cooling

Transformer oils are critical for the performance, safety, and longevity of electrical transformers and high-voltage equipment. Serving as both an insulating medium and a coolant, these oils must deliver:

• High dielectric strength for electrical insulation
• Thermal stability under continuous load
• Oxidation resistance for long service life

Poor-quality transformer oil can cause insulation failure, arcing, overheating, and costly equipment damage. At LUBELINE™, we supply premium-grade transformer oils designed to protect equipment, extend service life, and ensure reliable operation in the power generation, transmission, and electrical infrastructure industries.

Common Grades of Transformer Oils

LUBELINE™ offers transformer oils formulated to meet international standards, including IEC 60296 and ASTM D3487 specifications:

• Uninhibited Mineral Transformer Oils – Cost-effective and widely used in standard transformer applications.
• Inhibited Mineral Transformer Oils – Enhanced oxidation stability for extended service life and reduced sludge formation.
• Synthetic Ester Transformer Oils – Biodegradable, fire-resistant, and ideal for environmentally sensitive or high-temperature applications.
• Silicone Transformer Fluids – Superior fire resistance for specialized environments.

Applications of Transformer Oils

Transformer oils are essential for insulating and cooling a wide range of electrical equipment, including:

• Power and distribution transformers
• High-voltage switchgear
• On-load tap changers
• Circuit breakers
• High-voltage capacitors

These oils provide electrical insulation, heat dissipation, and protection against moisture and contaminants—helping maintain system reliability and safety under constant electrical stress.

Trusted Supplier of Transformer Oils

As a trusted distributor, LUBELINE™ delivers:

• Consistent supply of IEC- and ASTM-compliant transformer oils
• Expert guidance in selecting the right formulation for your equipment
• Fast and reliable delivery to reduce downtime and maintain critical infrastructure performance
• Access to premium mineral and synthetic transformer oils from leading brands