Shell Diala S3 ZX-IG

Premium Inhibited Electrical Insulating Oil


Shell Diala S3 ZX-IG is a premium inhibited insulating oil manufactured from highly refined mineral oils. It offers very high oxidation stability, good dielectric strength, gas absorbing behaviour and excellent low temperature properties.

Shell Diala S3 ZX-IG meets both the established and new industry copper corrosion tests.

Performance, Features & Benefits

Extended oil life

Shell Diala S3 ZX-IG is a fully inhibited oil giving outstanding oxidation performance and an extended oil life.


Transformer protection


  • Shell Diala S3 ZX-IG is non-corrosive towards copper, with no need for additional passivation.
System efficiency


  • The good low temperature properties of the oil ensures proper heat transfer inside the transformer, even from very low starting temperatures.

Main Applications

  • All Power transformer types and applications (e.g. generator transformers, shunt reactors, distribution transformers) and high voltage DC (HVDC) converter stations.


Electrical equipment


  • Components such as rectifiers, circuit breakers, bushings, instrument transformers and switch gears


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