Greyhound Lubricants Transformer Oil UNH-T1 | Uninhibited Dielectric Oil (PCB Free)
Greyhound Lubricants Transformer Oil UNH-T1 is a high-purity uninhibited transformer oil formulated with virgin base oils to deliver excellent dielectric strength, thermal conductivity, and standard oxidation resistance. Ideal for power and distribution transformers, rectifiers, circuit breakers, and switchgear, it offers reliable insulation and heat dissipation in a wide range of electrical environments.
Sourced from ISO-certified European and global plants, UNH-T1 meets the IEC 60296:2020 (Uninhibited) classification and provides a clean, additive-free solution for applications requiring compliance with uninhibited specifications. Its low moisture content and non-corrosive properties ensure safe operation and system longevity.
Key Features
- High dielectric strength of 73 kV for reliable insulation and breakdown resistance
- Additive-free virgin base oil for clean, specification-compliant operation
- Excellent thermal conductivity to support cooling and stability
- Low pour point of -41°C for performance in cold climates
- Non-corrosive formulation, compliant with IEC 62535
- Low moisture content of 9 ppm, reducing discharge and failure risk
- Oil Quality Index (OQIN) of 4400, indicating high oil purity
Compliance & Standards
- IEC 60296:2020 (Uninhibited) – Transformer oil classification
- IEC 60156 – Dielectric strength test method
- IEC 62535 – Non-corrosive to copper and metal parts
Applications
- Power and distribution transformers
- Rectifiers and circuit breakers
- Switchgear and insulation systems
- Tenders requiring uninhibited oil (e.g., Eskom)
Specifications
| Property | Units | Test Methods | Typical Data |
|---|---|---|---|
| Kinematic Viscosity @ 40°C | cSt | ISO 3104 | 9.3 |
| Density @ 20°C | Kg/m³ | ISO 12185 | 0.884 |
| Flash Point (COC) | °C | ISO 2719 | 145 |
| Pour Point | °C | ISO 3016 | -41 |
| Breakdown Voltage (Before Treatment) | kV | IEC 60156 | 73 |
| Dissipation Factor (DDF) @ 90°C | – | IEC 60247 | <0.001 |
| Interfacial Tension | mN/m | ASTM D971 | 44 |
| Total Acid Number (TAN) | mg KOH/g | IEC 62021 | 0.01 |
| Antioxidant/Inhibitor Content | Wt % | IEC 60666 | 0.00 |
| Aromatic Content | % | IEC 60590 | 12 |
| PCB Content | – | IEC 61619 | 0 (untraceable) |
| Water Content on Delivery | ppm | IEC 60814 | 9 |
| Oil Quality Index (OQIN) | – | – | 4400 |
What’s in the Box: Available in 1L, 5L, and 20L sizes. 210L drums and 1000L IBCs available on request for bulk orders.
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