Fire-Resistant PCB Free Transformer Oil for Enhanced Safety
In the context of switchgear, transformer oil mainly functions as an arc extinguishing agent. When an oilimmersed switch interrupts a power load, an arc is formed between the fixed and sliding contacts. The temperature of this arc can soar, posing a risk of equipment burnout and potentially causing damaging overvoltage conditions. During the initial phases of opening and closing the oilimmersed switch, the extreme heat from the arc results in rapid thermal decomposition of the oil, generating around 70% hydrogen. Hydrogen, having a high thermal conductivity (41), can absorb a substantial amount of heat, transferring it to the oil and cooling the contacts, thereby facilitating the extinguishing of the arc.
Product Details：Fire-Resistant Transformer Oil for Enhanced Safety
Identified as liquid insulating material or insulating liquid, insulating oil performs the crucial function of electrically segregating conductors of different voltage potentials. By occupying the spaces within or separating the poles of solid materials, it elevates dielectric properties and improves heat dissipation efficiency in electrical devices. As a fundamental insulating element, proficient knowledge of its application and maintenance is essential for maintaining the operational integrity and safety of electrical systems.
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: Recent advancements in transformer oil formulations have led to many of the newer products being considerably less toxic, thereby minimizing their effects on aquatic life and soil organisms.
Non-hazardous components: Several of these modern transformer oils incorporate non-hazardous ingredients, steering clear of harmful substances like polycyclic aromatic hydrocarbons (PAHs) and chlorinated compounds often found in conventional oils.
2. Market Research Analysis
The market spans diverse sectors, embracing the under100 MVA category, industrial applications, and power utilities. Transformer oil assumes a pivotal role in guaranteeing the steadfastness, dependability, and transmission efficacy of electrical grids. It addresses thermal stress, heat surplus, and dielectric resilience challenges within transformers, breakers, switchgear, capacitors, boilers, refineries, and energy stations. Furthermore, the market dynamics are shaped by emerging trends, such as highperformance computing advancements, the proliferation of electric vehicles, and the adoption of HVDC transmission networks. The International Energy Agency anticipates sustained expansion in the transformer oil market, fueled by the escalating electricity demand and the transition towards renewable energy sources.
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