Advanced Ester IEC 60296 Transformer Oil for Optimal Performance
In switchgear, transformer oil mainly plays the role of arc extinguishing. When an oilimmersed switch cuts off a power load, an arc is generated between the fixed contacts and the sliding contacts. The arc temperature at this point is so high that it can easily cause the equipment to burn out, and at the same time it can also cause overvoltage to occur and damage the equipment. When the oilimmersed switch in the initial opening and closing by the arc, due to the high temperature will make the oil undergo intense thermal decomposition, and produce about 70% of the hydrogen, and at the same time due to the thermal conductivity of hydrogen is larger (41), then the hydrogen can absorb a large amount of heat, and heat conduction to the oil, and directly to the contact cooling, so as to achieve the purpose of arc extinguishing.
Product Details：Advanced Ester Transformer Oil for Optimal Performance
Insulating oil, colloquially termed liquid insulating medium or dielectric liquid, fulfills the essential role of electrically insulating conductors of diverse potential. By filling gaps within or between solid material poles, it augments their dielectric capacity and facilitates efficient heat dissipation in electrical equipment. As a crucial insulating agent, proficient comprehension of its utilization and maintenance practices is fundamental to ensuring the smooth running and safety of electrical installations.
Parameter：
Sports Event | Quality Indicators | measured value | Test Methods |
Functional characteristics | |||
Pour Point/°C | -50 | -57.5 | ISO 3016 |
Kinematic viscosity (40℃)/(m㎡/s) | ≯12 | 9.52
| ISO 3104 |
Kinematic viscosity (-10°C)/(mm²/s) | ≯1800 | 1028 | ISO 3104 |
Water content/(mg/kg) | ≯30/40 | 9.0 | IEC 60814 |
Breakdown voltage/kV (untreated oil) | ≮30 | 64.5 | IEC 60156 |
Density (20°C)/(g/ml) | ≯895 | 886 | ISO 12185 |
Dielectric loss factor (90°C) | ≯0.005 | 0.0005 | IEC 60247 |
Refining/stabilizing properties | |||
exterior condition | Clear and transparent, free of sediment and suspension (of atmospheric pollution) | Clear and transparent, free of sediment and suspension (of atmospheric pollution) | visual assessment |
Acid value (mgKOH/g) | ≯0.01 | 0.0008 | IEC 62021- 1 |
Interfacial tension/(mN/m) | No general requirements | 45.3 | ISO 6295 |
Total sulfur content (mass fraction)/% | No general requirements | No general requirements | ISO 14596 |
corrosive sulfur | non-corrosive | non-corrosive | DIN 51353 |
Content of antioxidant additives (mass fraction)/percent Oil with antioxidant additives (U) | ≯0.08 | 0.065 | IEC 60666 |
2-Furfural content/(mg/kg) | ≯0.1 | 0.012 | IEC 61198 |
Operational characteristics | |||
Oxidation stability (120°C) Test time: 332h | - | - | - |
--Total acid value (in KOH)/(mg/g) | ≯1.2 | 0.04 | IEC 61125 Act C |
--Oil sludge (mass fraction)/% | ≯0.8 | 0.020 | IEC 61125 Act C |
--Dielectric loss factor (90°C) | ≯0.500 | 0.004 | IEC 60247 |
Gassing/(mm/min) | No general requirements | No general requirements | IEC 60628 |
Health Safety and Environmental Characteristics (HSE) | |||
Flash point (closed)/°C | ≮135 | 148.2 | ISO 2719 |
PCA content (mass fraction)/% | ≯3 | 0.8 | BS 2000 Part 346 |
Polychlorinated biphenyl (PCB) content/(mass fraction)(mg/kg) | undetectable | undetectable | IEC 61619 |
1. Environmental Friendliness of Transformer Oil
Low toxicity: The latest transformer oil formulations have been enhanced, resulting in many new oils that exhibit significantly lower toxicity, thus reducing their impact on aquatic and soil ecosystems.
Non-hazardous components: Some of the newly developed transformer oils incorporate non-hazardous elements, steering clear of dangerous chemicals like polycyclic aromatic hydrocarbons (PAHs) and chlorinated compounds that may be present in older formulations.
2. Market Research Analysis
The market serves diverse segments, ranging from the sub100 MVA market segment, industrial domains, to power utilities. Transformer oil is vital in safeguarding the stability, dependability, and transmission efficiency of electrical energy systems. It mitigates issues related to thermal stress, heightened temperatures, and dielectric resilience in transformers, circuit breakers, switchgear devices, capacitors, boilers, refinery operations, and power plants. Furthermore, the market is shaped by emerging trends, notably the advancements in highperformance computing, the growth of the electric vehicle industry, and the integration of HVDC transmission technologies. The International Energy Agency anticipates sustained growth for the transformer oil market, stemming from the escalating demand for electricity and the transition towards renewable energy sources.
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