Ultra - Pure Mineral Transformer Oil U-40 Type
As a vital insulating medium for electrical equipment, transformer oil is predominantly derived from petroleum through refining processes, consisting mainly of alkanes and cycloalkanes. Its outstanding electrical insulation properties enable effective isolation of high-voltage components within the transformer, preventing leakage and short circuits. Additionally, its good thermal conductivity facilitates rapid heat dissipation generated during transformer operation, avoiding overheating and potential damage. Moreover, it possesses certain arc-extinguishing capabilities, capable of quickly quenching arcs formed when switching devices interrupt current.
Product Details：Ultra - Pure Mineral Transformer Oil U-40 Type
As a key component of the power grid, the transformer is of great importance. The safety of the power grid relies on the normal operation of the transformer, and the transformer oil is directly related to the stable operation of the transformer. Thus, we must manage the selection, use, and regulation of transformer oil appropriately to ensure the safe operation of the transformer. For the selection principles, initially, we should consider the properties of the oil. Its quality must satisfy the needs from elements such as the equipment's voltage grade and the local ambient temperature. Also, the compatibility of the oil with other relevant insulating materials should be taken into consideration.
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. Environmental Friendliness of Transformer Oil
Environmental monitoring: Regularly monitoring the environment and maintaining transformers and other power equipment can greatly decrease the likelihood of leaks.
An oil spill monitoring system can provide timely alerts for potential issues, enabling immediate remedial actions.
Spill contingency measures: Establishing and executing an effective spill contingency plan is necessary for ensuring rapid responses to spills and lessening their environmental consequences. Moreover, training employees in emergency response skills prepares them to respond swiftly in emergencies.
2. Factors Affecting Service Life
For the transformer oil's service life to be ensured, it is essential to carry out regular quality testing and analysis. This testing should cover aspects such as insulation resistance, absorption ratio, polarization index, dielectric loss, winding leakage current, and the oil's microwater content. A comprehensive assessment of these results can indicate whether the oil is damp, contaminated, or aging. If problems arise, one might first try to regenerate the oil through filtration. However, if filtration is ineffective or the oil quality is seriously compromised, replacing it with new transformer oil becomes necessary.
Own Factory
Haikun Petrochemical, with advanced equipment, leads in the lubricant production.
Employees at Working
Laboratory specialists at Haikun use advanced equipment for industrial oil analysis. Their professional work enhances product competitiveness.
Canned Oil Products
Our company, Haikun, has a professional packing system for sea - freight logistics. We pack transformer and insulating oils in 200L iron barrels and 20000L liquid bags for secure sea - freight packing.
Transportation
With reliable shipping channels, Haikun Petrochemical has a proven track record in sea freight. We send insulating oils to Russia, South America, and across Africa.
Enterprise Culture
In our business, teamwork is highly valued. We encourage our employees to establish close cooperative relationships with each other, support each other, learn from each other, face challenges together and realize win-win situation.
Customer Testimonials
Haikun Petrochemical's industrial lubricants are amazing. They understand customers and provide products with precise parameters. The purchase process was smooth. - South Asia, Kumar Rajesh
