Diala transformer oils are generally characterized as mineral insulating oils formulated for transformer insulation and cooling, offered in inhibited and uninhibited versions depending on the grade. Typical characteristics include controlled dielectric strength, low moisture as delivered, suitable viscosity for heat transfer, and oxidation stability aligned with utility requirements. Some grades are designed to meet IEC specifications for unused oils. As with any branded oil, the defining characteristics must be confirmed from the exact product datasheet and batch certificate because multiple Diala variants exist.
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