Shell Diala S4 ZX-I_209 Liter (Electrical Oil)
Premium Inhibited Electrical Insulating Oil
Shell Diala S4 ZX-I is the new electrical insulating oil from Shell designed to meet the challenges presented by the latest
power transformers. It offers an extended oil life with the peace of mind of zero sulphur content.
Shell Diala S4 ZX-I is manufactured from zero sulphur base oils produced using Shell’s GTL (gas-to-liquid) technology.
These base oils offer a high degree of compositional consistency and have an excellent response to anti-oxidant. In
addition they are globally available and free from PCBs, DBDS and passivators.
Shell Diala S4 ZX-I meets both the established and new industry copper corrosion tests
Shell Diala S4 ZX-I is a fully inhibited oil giving outstanding
oxidation performance and an extended oil life. Shell Diala S4
ZX-I is also suitable for use in highly loaded applications.
Transformer protection
· Shell Diala S4 ZX-I is manufactured from a zero sulphur* base
oil, making it intrinsically non-corrosive towards copper,
without the need for passivation or other additives.
Shell Diala S4 ZX-I meets all relevant tests for copper
corrosion, namely the established DIN 51353 (Silver Strip
Test), ASTM D1275, and also the latest more severe tests: IEC
62535 and ASTM D1275B.
*Sulphur content below 1ppm detection limit of ASTM D5185
System efficiency
· The good low temperature viscometric properties of the oil
ensure proper heat transfer inside the transformer, even from
very low starting temperatures.
Shell Diala S4 ZX-I is specially dried and handled to achieve a
low water content and retain a high breakdown voltage at point
of delivery. This enables it to be used in many applications
without further treatment.
