To help your transformer perform to its design standards, an electrical insulating oil must maintain its characteristics over a wide range of operating temperatures. All Shell Diala electrical oils are designed to offer excellent heat transfer and dielectric properties, even at the lowest start-up operating temperatures. In addition, Shell Diala oils are formulated to offer excellent resistance to the effects of ageing, sludge formation and deposit build-up.
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.
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.
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.
RESISTANCE TO CORROSION
Shell is committed to minimising the possibility of insulating-oil related corrosive sulphur developing, and its resulting copper corrosion. All Shell products meet the industry standards for corrosive sulphur.
Shell offers products designed for specialist applications. Within the Shell Diala range this includes Shell Naturelle Transformer Oil S4 I. This is a synthetic-ester-based product that offers excellent low-flammability characteristics. It has a flashpoint of 275°C, is readily biodegradable and meets European Union Ecolabel requirements