1. Enhanced Protection – Oil is at the heart of your transformer. The Shell Diala range presents a number of options for the best possible protection The new Shell Diala S4 ZX-I exceeds IEC 60296:Ed 4 2012 highest oxidation stability, low sulphur specification. In fact it has essentially zero sulphur (below detection limits) which means that the risk of oil related copper corrosion is removed.
  2. Longer oil life – Shell Diala transformer oils are designed to last, supporting the extension of your transformer lifetime. Shell Diala S4 ZX-I exceeds the 500-hour oxidation test limit and extends oil life through its exceptional resistance to the effects of ageing, sludge formation and deposit build-up.
  3. Greater efficiency – For optimum transformer performance, electrical insulating oil must maintain its characteristics over a wide range of operating temperatures. Theorectical modelling predicts that Shell Diala S4 ZX-I could deliver improved operational performance under overload conditions due to enhanced thermal properties.