High Performance Electrical insulating oil
Shell Diala BX is an inhibited insulating oil manufactured from naphthenic feedstocks. It offers good dielectric properties, good oxidation stability and provides efficient heat transfer. It has excellent low temperature properties achieved without the use of pour point depressants.
Shell Diala BX meets both the established and the new industry copper corrosion tests.
Applications
• Transformers
Electrical insulating oil for grid and industrial transformers.
• Electrical equipment
Components such as rectifiers, circuit breakers and switchgears.
Advice on applications not covered in this leaflet may be obtained from your Shell Representative.
Performance Features and Advantages
• Good oxidation stability
Diala BX offers inherent resistance to oil degradation.
• Very good low temperature properties
The naphthenic nature of the feedstock of Diala BX provides a good low temperature performance without adding any additives.
• Good heat transfer characteristics
The good low temperature properties of the oil ensures proper heat transfer inside the transformer, even from lowest starting temperatures.
• Anti corrosion properties
Shell Diala BX is non-corrosive towards copper, with no need for passivation. Diala BX meets all relevant tests on copper corrosion, namely the established
DIN 51353 (Silver Strip Test) and ASTM D1275, and also the newer tests: IEC 62535 and
ASTM D1275B.
Specification and Approvals
Shell Diala BX meets the following specification:
IEC 60296 (2003),
Table 2 Transformer Oil (I), inhibited
Storage precautions
The critical electrical properties of Shell Diala BX are easily compromised by trace contamination with foreign material. Typically encountered contaminants include moisture, particles, fibres and surfactants. Therefore, it is imperative that electrical insulating oils be kept clean and dry.
It is strongly recommended that storage containers be dedicated for electrical service and include airtight seals. It is further recommended that electrical insulating oils be stored indoors in climate-controlled environments.
Health and Safety
Guidance on Health and Safety are available on the appropriate Material Safety Data Sheet which can be obtained from your Shell representative.
Shell Diala BX is free of polychlorinated biphenyls
(PCB).
Protect the environment
Take used oil to an authorized collection point.
Do not discharge into drains, soil or water.
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