Insulating Oil For Transformers T-40
Capable of efficiently combating discharge issues and minimizing power dissipation under the rigors of high-voltage electric fields, this innovative product satisfies the toughest insulation performance specifications with ease.
Product Details：Insulating Oil For Transformers T-40
Offering a unique blend of low viscosity, superior low-temperature operational characteristics, and potent cooling and heat transfer efficiency, this product also guarantees smooth low-temperature start-ups and effective filtration. Furthermore, it adheres to environmental standards by being free of polychlorinated biphenyls.
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. Assessment Techniques
(1) Visual Evaluation: Encompassing an examination of the oil's hue, aroma, clarity, and other visual attributes.
(2) Physical Characterization: This involves quantifying the oil's density, flash and ignition thresholds, as well as its pour point for low-temperature performance.
(3) Chemical Analysis: This step measures key chemical indices such as acidity level, neutralizing capacity, moisture content, and gas composition within the oil.
(4) Electrical Property Evaluation: It entails assessing the oil's electrical properties, specifically dielectric losses, permittivity, and breakdown voltage.
2. Transformer Oil: Its Key Roles and Applications
(1) Transformer's Indispensable Oil: Transformer oil is an integral part of transformers, responsible for insulating and cooling vital parts, specifically windings and internal components.
(2) Safeguarding Electrical Integrity: It effectively creates an electrical barrier, preventing electric arcs and shocks, while also managing heat to ensure transformer stability.
(3) Broad Electrical Cooling Spectrum: This oil extends its utility beyond transformers, serving as an insulation and cooling medium for a range of electrical devices, including cables, switchgear, reactors, and breakers.
(4) Power Electronics' Cooling Solution: In power electronics, transformer oil is indispensable for insulation and cooling purposes, particularly in inverters and capacitors.
(5) Systemic Maintenance and Monitoring: Transformer oil is vital in maintaining power systems, aiding in equipment cleaning and enabling proactive maintenance strategies through comprehensive chemical and physical evaluations.
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FAQ：
Q: Can you elaborate on your company's primary operations?
A: Our main operations revolve around international trade, where we are actively involved in sourcing, selling, and managing the shipment of goods that are imported and exported globally.
Q:Can I choose flexible transportation options?
A: We offer a comprehensive range of transportation services, including road, rail, water and air freight. We consult with our customers to determine the most appropriate mode and route based on their specific needs and financial considerations. With a global reach, we provide fast, secure transportation services regardless of the origin or destination of the shipment.
Q: How do you establish a long-term and stable relationship?
A: We value the long-term relationship with our customers and will provide quality products, reasonable prices and considerate services. At the same time, we also hope that customers can comply with the contract provisions, pay on time and provide order information to ensure the smooth progress of cooperation.
