Reliable Electrical Insulation Oil
Transformer oil, a synthetic derivative of natural petroleum, undergoes rigorous distillation and refining procedures. Its key chemical constituent, naphthenic hydrocarbon, constitutes approximately 80% of its total composition, with the remaining components primarily being aromatic hydrocarbons and alkanes. This oil is characterized by its stable physical properties, featuring a relative density of 0.895, a freezing point typically less than 45°C, and a flash point no less than 136°C.
Product Details：Reliable Electrical Insulation Oil
With a diverse range of benefits, insulating oils possess high dielectric resilience, high flash point thresholds, minimal viscosity, absence of organic acids, alkalis, and sulfur-based corrosion, robust anti-emulsification qualities, minimal formation of deposits under standard operating conditions, quick elimination of arc byproducts, and a low pour temperature. These attributes make them ideal for providing superior insulation and cooling in electrical equipment.
PARAMETER：
Sports Event | IEC60296:2020 TVAI (LCSET-40℃) Quality indicators | Typical properties | Test Methods |
Functional characteristics | |||
Pour Point/°C | ≯-50 | -63 | ISO 3016 |
Kinematic viscosity (40°C)/(mm²/s) | ≯12 | 7.0 | ISO 3104 |
Kinematic viscosity (-40°C)/(mm²/s) | ≯2500 | 1736 | IEC 61868 |
Water content/(mg/kg) | ≮30 | 68 | IEC 60814 |
Breakdown voltage/kV | - | IEC 60156 | |
--Untreated oil | ≮30 | 40-70 | |
--Treated oil | ≮70 | >70 | |
Density (20°C)/(kg/m³) | ≯895 | 865 | ISO 12185 |
Dielectric loss factor (90°C) | ≯0.005 | 0.0005 | IEC 60247 |
Refining/stabilizing properties | |||
saturation (color theory) | <0.5 | <0.5 | ISO 2049 |
exterior condition | clear and transparent | Clear and transparent, no precipitation | visual assessment |
Acid value/(mgKOH/g) | ≯0.01 | <0.01 | IEC 62021 |
Interfacial tension/(mN/m) | ≮43 | 47 | IEC 62961 |
Total sulfur content/% | ≯0.05 | 0.003 | ISO 14596 |
corrosive sulfur | non-corrosive | non-corrosive | DIN 51353 |
Potentially corrosive sulfur | non-corrosive | non-corrosive | IEC62535 |
DBDS/(mg/kg) | Not detectable (<5) | undetectable | IEC 62697-1 |
Antioxidant content/% | 0.08~0.4 | 0.37 | IEC 60666 |
Metal passivator/(mg/kg) | Not detectable (<5) | undetectable | IEC 60666 |
2-Furfural content and related substances (single component) (mg/kg) | Not detectable (<0.05) | undetectable | IEC 61198 |
Gas production characteristics (under thermal oxidation)/uI/L) | Hydrogen ≯ 50 | 9 | Appendix A4 Methodology (air-saturated, containing copper) |
Methane ≯ 50 | 1 | ||
Ethane ≯ 50 | 0.2 | ||
Operational characteristics | |||
Chlorine stability (500h) | - | - | IEC 61125 |
--Total acid value (mg (KOH)/g) | ≯0.3 | 0.02 | |
-- Oil sludge/% | ≯0.05 | <0.01 | |
--Dielectric loss factor (90°C) | ≯0.050 | 0.025 | IEC 60247 |
HSE Characteristics | |||
Flash point (closed)/°C | ≮135 | 145 | ISO 2719 |
PCA content/% | <3 | 1.2 | IP 346 |
Polyoxybiphenyl (PCB) content/(mg/kg) | Not detectable (<2) | undetectable | IEC 61619 |
1. Transformer Oil Service Life
The usual replacement cycle for transformer oil is between 5 and 10 years. However, this should be viewed as a rough estimate, as the actual timing for replacement needs to be evaluated based on the transformer’s unique conditions. The longevity of transformer oil is a multifaceted issue impacted by various influences. To ensure the transformer runs efficiently and to maximize its lifespan, it is suggested to conduct regular checks and evaluations of the transformer oil, replacing it promptly when required.
2. Factors Affecting Service Life
Transformer Load: Extended exposure to high loads on a transformer can accelerate the aging process of the oil, shortening its lifespan. Therefore, effectively managing transformer load is key to prolonging the oil's service life.
Oil Quality: The lifespan of transformer oil is largely determined by its quality. High-quality transformer oil is characterized by better thermal stability and resistance to aging, which can enhance its service life. In contrast, low-quality oil may degrade rapidly, resulting in a shorter lifespan.
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Customer Reviews
"I'm very satisfied with Haikun's transformers. They are incredibly durable and come with a factory warranty. The customer service is exceptional. – Iran, Reza Shahbaz"
