Shell Diala Transformer Oils

Manufactured from highly refined mineral oils, Shell Diala S2 is an inhibited electrical insulating oil offering good dielectric properties, oxidation stability, and consistently efficient heat transfer.

Known for its reliable performance, Shell Diala S2 meets the industry standards for both established and newer, more severe copper corrosion tests.

With this product you can count on:

• Outstanding oxidation performance and extended oil life
• Proper heat transfer inside transformers, even when starting from low temperatures
• Resistance to copper corrosion, no need for additional passivation

Manufactured from specially refined minerals oils with ultra-low sulfur content, Shell Diala S3 is a premium, inhibited electrical insulating oil with excellent dielectric and low-temperature properties.

In addition, when you use Shell Diala S3, you can always count on:

• Resistance to copper corrosion
• Proper heat transfer inside transformers, even when starting from very low temperatures, classifying S3 as “Arctic grade”
• Outstanding oxidation performance and extended oil life

Shell Diala S4 is the latest offering in the Shell Diala collection of transformer oils, engineered to endure the severe stresses imposed by the latest generation of transformers.

Even through higher voltages and harsher operating conditions, Shell Diala S4 offers superior performance, keeping your transformer working longer and more efficiently than conventional oils.

As the collection’s top-of-the-line product, you can expect:

• Resistance to degradation, resulting in improved transformer reliability
• Effectively zero sulfur content, which eliminates the risk of oil-related copper corrosion
• Excellent thermal properties under conditions of overload and low starting temperatures, leading to enhanced transformer operation