Greyhound Lubricants Transformer Oil 5L UNH-T1 | Uninhibited Insulating Oil (PCB Free)
Greyhound Transformer Oil 5L UNH-T1 is a high-purity uninhibited transformer oil formulated with premium virgin base oils to provide excellent dielectric strength, efficient thermal conductivity, and clean, additive-free performance. Designed for power and distribution transformers, rectifiers, circuit breakers, and switchgear, it offers reliable insulation and cooling under demanding conditions.
Manufactured and sourced from ISO-certified European and global plants, Greyhound Transformer Oil UNH-T1 meets IEC 60296:2020 (Uninhibited) standards. With no oxidation inhibitors, it is ideal for applications requiring full compliance with uninhibited oil specifications, especially in regulated installations or tender-driven environments.
Key Features
- Dielectric strength of 73 kV for insulation and breakdown protection
- Virgin base oils with zero oxidation inhibitors for spec compliance
- Excellent thermal conductivity for heat dissipation
- Low pour point of -41°C for cold-start reliability
- Non-corrosive formulation compliant with IEC 62535
- Moisture content of 9 ppm to reduce electrical discharge risk
- Oil Quality Index (OQIN) of 4400 for purity and stability
Compliance & Standards
- IEC 60296:2020 (Uninhibited) – Transformer oil classification
- IEC 60156 – Dielectric strength testing
- IEC 62535 – Non-corrosive to copper and metal parts
Applications
- Power and distribution transformers
- Rectifiers and circuit breakers
- Switchgear and electrical insulation systems
- Tenders and utility use (e.g., Eskom transformers)
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: Greyhound Uninhibited Transformer Oil UNH-T1 5L. Bulk sizes also available: 210L drums and 1000L IBCs from head office.
