Electrical Insulation
Review dielectric performance against the equipment requirements.
Specialty Lubricants
Transformer Oil
Electrical insulation. Heat transfer. Equipment reliability.
QA Transformer Oil L8 and Shell Diala options for reviewing your electrical insulating-fluid requirements.
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Electrical insulating fluids
Select for your transformer and service conditions.
Transformer liquids serve both electrical-insulation and cooling functions. The choice depends on the equipment design, required fluid standard, operating environment and manufacturer recommendations.
Share the exact oil currently in service and whether the job is an initial fill, refill or top-up. Our team can help review the product documentation and the information needed for selection.
Heat Transfer
Match fluid properties to the operating and starting temperatures.
Fluid Stability
Consider oxidation resistance and the specified inhibitor system.
Clean Handling
Keep moisture and foreign material out of the insulating fluid.
Our product range
QA Transformer Oil L8 & Shell Diala
QA Lubricants
QA Transformer Oil L8
Our QA transformer-oil option. Contact QA with the equipment specification and application details to review suitability and obtain product documentation.
Packages: 5-gallon pails, 55-gallon drums and 275-gallon totes.
Ask our team to confirm the required oil standard, inhibitor classification and supporting test information for your application.
Availability and pricingShell Diala
Shell Diala S2 ZX-A
Formerly Diala AX. An inhibited mineral insulating oil for grid and industrial transformers. Shell describes oxidation resistance, copper protection and heat transfer at low starting temperatures. Its sheet lists ANSI/ASTM D3487 Type II.
Packages: 5-gallon pails and 55-gallon drums.
Shell Diala S2 ZX-A technical data sheet
Availability and pricingShell product data
Diala S2 ZX-A: typical physical properties
| Property | Test method | Typical value |
|---|---|---|
| Kinematic viscosity at 40°C | ASTM D445 | 9 cSt |
| Kinematic viscosity at 100°C | ASTM D445 | 2.2 cSt |
| Flash point, COC | ASTM D92 | 150°C |
| Pour point | ASTM D97 | −57°C |
| Appearance | ASTM D1524 | Clear and bright |
Source: Shell Diala S2 ZX-A technical data sheet, version 1.1. Typical values are not specification limits. These data describe Shell Diala S2 ZX-A; request QA L8’s own documentation for its properties and requirements.
Selection & handling
Protect the fluid’s electrical performance.
Confirm the exact oil requirement.
Provide the transformer model, specified standard and inhibitor classification. Review compatibility, equipment approval and any filling or treatment requirements before changing fluids.
Keep it clean and dry.
Shell recommends dedicated electrical-service containers with airtight seals and indoor controlled storage. Moisture, particles, fibres and surfactants can impair insulating performance.
Technical support
Tell us about your transformer.
Call 1.877.877.6221 or email info@qalube.com with the equipment details, specified fluid, current oil and quantity required.
Review transformer oil options.
Contact QA for documentation, availability and pricing.