Silicone-Based Transformer IEC 60296 Transformer Oil
In switchgear systems, transformer oil is primarily utilized for arc extinguishing. When an oilimmersed switch disconnects a power load, an arc forms between the fixed and moving contacts. The temperature of this arc can become exceedingly high, risking equipment burnout and leading to overvoltage that may damage the device. As the oilimmersed switch begins its opening and closing process, the intense heat generated by the arc causes the oil to undergo significant thermal decomposition, resulting in about 70% hydrogen production. Thanks to hydrogen's high thermal conductivity (41), it can absorb considerable heat and conduct it to the oil, which cools the contacts and effectively extinguishes the arc.
Product Details：Silicone-Based Transformer Insulating Oil
Insulating oil, also referred to as a liquid insulating medium or insulating fluid, is a specialized liquid utilized to electrically isolate conductors of varying potentials. It fills the voids within or between solid material poles, augmenting their dielectric strengths and bolstering heat dissipation within electrical equipment. This essential insulating material is instrumental in electrical systems, and its proper usage and maintenance are crucial for ensuring their continuous and safe operation.
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: Modern transformer oil formulations have been improved, and many of the newer oils are significantly less toxic, with a reduced impact on aquatic and soil organisms.
Non-hazardous components: Some new transformer oils utilize non-hazardous components, avoiding harmful chemicals such as polycyclic aromatic hydrocarbons (PAHs) and chlorinated compounds that may be present in traditional oils.
2. Market Research Analysis
The market caters to various segments, including the <100 MVA segment, industrial segment, and power utilities. Transformer oil plays a crucial role in ensuring the stability, reliability, and transmission capacity of electrical power systems. It helps mitigate thermal stress, excess heat, and dielectric strength issues in transformers, circuit breakers, switchgear, capacitors, boilers, refineries, and power plants. The market is also influenced by emerging trends, such as highperformance computing (HPC), electric vehicles, and HVDC transmission systems. The International Energy Agency forecasts continued growth in the transformer oil market due to the increasing demand for electricity and the shift towards renewable energy sources.
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