
LUMINOL TRi
High-Efficiency Electrical Insulating Oil
LUMINOL TRi represents a breakthrough in electrical insulating oil technology. Unlike naphthenic mineral oils, LUMINOL TRi uses Petro-Canada Lubricants' ultra-pure, severely hydrotreated isoparaffinic base oils to help minimize power loss and maximize productivity.
Corrosive sulphur-free performance - Contains no corrosive sulphur compounds that may lead to transformer breakdown.

LUMINOL TRi
Type II Electrical Insulating Oil
OEM Approvals & Industry Standards
LUMINOL TRi meets or exceeds the performance requirements of major industry standards
CAN/CSA-C50-14 (R2018)
Class A and B
Canadian Standards Association specification for electrical insulating oils
ASTM D3487
Type II
Standard specification for mineral insulating oil used in electrical apparatus
CSA-C50-14 (R2018) Type IV
Upgraded Oxidation Stability
Special requirements for enhanced oxidation stability performance
Hydro One M-104
Approved
Major utility approval for transformer insulating oils
IEC 60296
Type A - Fully Inhibited High Grade
International Electrotechnical Commission specification for unused mineral insulating oils
DOBLE TOPS
Meets Specifications
Doble Engineering transformer oil performance standards
Why Choose LUMINOL TRi?
Outperforms naphthenic electrical insulating oils with breakthrough technology
Corrosive Sulphur Free
Contains no corrosive sulphur compounds that may lead to transformer breakdown. Does not require passivators.
Superior Heat Transfer
Isoparaffinic base oil provides excellent heat transfer, helping transformers operate cooler in high ambient temperatures.
Outstanding Cold Weather Performance
Pour point of -60°C/-76°F ensures reliable operation even in extreme cold conditions.
Negative Gassing Tendency
Reduces the risk of failure from hydrogen gas bubbles under electrical stress conditions.
Demonstrated Characteristics
LUMINOL TRi is ideal for use in large power and distribution transformers operating at peak capacity, as well as free-breathing units, pad mount, and pole mount transformers for commercial, industrial, and institutional applications.
Environmental, Health & Safety
LUMINOL TRi is produced using ultra-refined isoparaffinic base oil. It can help reduce disposal costs and the potential impact of spills, as well as answer possible environmental concerns about transformer oil toxicity.
- Ultimate biodegradable in natural environments
- Negative gassing tendency reduces risk of fire and explosion
- High flash point (170°C / 338°F) for improved safety
- Reduces disposal costs and environmental impact
Applications
Technical Specifications
LUMINOL TRi exceeds industry standard requirements across physical, chemical, and electrical properties
Physical Properties
| Property | Test Method | CSA-C50 Class A | ASTM D3487 Type II | LUMINOL TRi |
|---|---|---|---|---|
| Appearance | Visual | N/A | Clear & Bright | Clear & Bright |
| Colour | ASTM D1500 | 0.5 max | 0.5 max | <0.5 |
| Specific Gravity @ 15°C | ASTM D4052 | 0.906 max | 0.91 max | 0.835 |
| Viscosity @ 40°C (cSt) | ASTM D445 | 10 max | 12.0 max | 9.2 |
| Viscosity @ -40°C (cSt) | ASTM D445 | 2500 max | N/A | 1230 |
| Pour Point | ASTM D97 | -46°C max | -40°C max | -60°C |
| Interfacial Tension @ 25°C | ASTM D971 | 40 min | 40 min | 48 dynes/cm |
| Flash Point | ASTM D92 | 145°C min | 145°C min | 170°C |
Chemical Properties
| Property | Test Method | Specification | LUMINOL TRi |
|---|---|---|---|
| Neutralization Number (mg KOH/g) | ASTM D974 | 0.03 max | <0.01 |
| Water Content (ppm) | ASTM D6304 | 35 max | <20 |
| Corrosive Sulphur | ASTM D1275-15 | Not corrosive | Not corrosive |
| PCB Content (ppm) | ASTM D4059 | 2 max | Nil |
| Oxidation Stability (164h Sludge) | ASTM D2440 | 0.2 max | <0.01 |
| Inhibitor Content (wt.%) | ASTM D2668 | 0.08-0.30 | 0.20 |
| RPVOT (minutes) | ASTM D2112 | 195 min | 600 |
Electrical Properties
| Property | Test Method | Specification | LUMINOL TRi |
|---|---|---|---|
| Dielectric Breakdown (60 Hz Disk) | ASTM D877 | 30 kV min | 55 kV |
| Dielectric Breakdown (VDE, processed) | ASTM D1816 | 56 kV min | 65 kV |
| Dielectric Impulse Breakdown | ASTM D3300 | 145 kV min | >300 kV |
| Gassing Tendency (μL/min) | ASTM D2300 | +30 max | -10 |
| Power Factor @ 100°C | ASTM D924 | 0.003 max | <0.001 |
| Power Factor @ 25°C | ASTM D924 | 0.0005 max | <0.0001 |
The values quoted above are typical of normal production. They do not constitute a specification.
360 TX Technical Support
With Petro-Canada Lubricants' 360 TX program, you get the technical knowledge and experience of industry experts working for your business. From oil analysis to equipment recommendations, our team is here to help maximize your transformer performance and reliability.
Learn About 360 TXTechnical Experts at Work for You
Petro-Canada Lubricants Certifications
Ready to Improve Your Transformer Performance?
Contact us to discuss your electrical insulating oil requirements and learn how LUMINOL TRi can help minimize power loss and extend equipment life.