Insulating Oil For Transformers I-20 Type 2
Crafted from deeply refined lubricant base oils augmented with antioxidants, insulating oils function as vital dielectrics in electrical systems. Their primary features include their low-temperature performance, robust resistance to oxidation, and minimal dielectric dissipation. Low-temperature performance signifies the oil's ability to spontaneously convect, effectively export heat, and instantly halt arc currents in electrical equipment under cold temperatures. To facilitate this, they must have a low pour point and low viscosity at such temperatures.
Product Details：Insulating Oil For Transformers I-20
Derived from the fractional distillation of petroleum, transformer oil comprises a complex mixture of alkane, cycloalkane, and aromatic hydrocarbons, refined from raw petroleum. Its primary function lies in insulating and cooling transformers and electrical equipment, effectively transferring internal heat to facilitate machine cooling. This ensures temperature stability within the transformer, mitigating the risk of overheating-related failures and securing the integrity of the production process.
PARAMETER：
Sports Event | GB2536-2011 1-10°C (general purpose) Quality indicators | Typical properties | Test Methods |
Minimum Cold Commissioning Temperature (LCSET)/°C | -10 | - | - |
Functional characteristics | |||
Pour Point/°C | ≯-20 | -27 | GB/T 3535 |
Kinematic viscosity (40°C)/(mm²/s) | ≯12 | 9.4 | GB/T 265 |
Kinematic viscosity (-10°C)/(mm²/s) | ≯1800 | 145 | |
Water content/(mg/kg) | ≯30 | 19 | GB/T 7600 |
Breakdown voltage/kV Untreated oil | ≮ 0 | 68 | GB/T 507 |
Density (20°C)/(kg/m³) | ≯895 | 889.5 | SH/T 0604 |
Dielectric loss factor (90°C) | ≯0.005 | 0.0007 | GB/T 5654 |
Refining/stabilizing properties | |||
exterior condition | clear and transparent | clear and transparent | visual assessment |
Acid value (in KOH)/(mg/g) | ≯0.01 | <0.01 | NB/SH/T 0836 |
Water-soluble acids or bases | not have | not have | GB/T 259 |
Interfacial tension/(mN/m) | ≮40 | 44 | GB/T 6541 |
corrosive sulfur | non-corrosive | non-corrosive | SH/T0804 |
Antioxidant content (mass fraction) / % | 0.08~0.40 | 0.30 | NB/SH/T0802 |
2-Furfural content/(mg/kg) | ≯0.1 | <0.05 | NB/SH/T0812 |
Operational characteristics | |||
Oxidation stability (120°C) | - | - | NB/SH/T 0811 |
Test time: 500h | - | - | |
--Total acid value (in KOH)/(mg/g) | ≯1.2 | 0.20 | |
--Oil sludge (mass fraction)/% | ≯0.8 | 0.04 | |
--Dielectric loss factor (90°C) | ≯0.500 | 0.049 | GB/T 5654 |
HSE Characteristics | |||
Flash point (closed)/°C | ≮135 | 144 | GB/T 261 |
PCA content (mass fraction)/% | ≯3 | <3 | NB/SH/T 0838 |
Polychlorinated biphenyl (PCB) content/(mg/kg) | undetectable | not detected | SH/T 0803 |
1. Oil Change Procedure
Replacing transformer oil requires meticulous planning, with each step from de-energization, draining, to cleaning executed rigorously. The new oil undergoes stringent quality inspection and filtration before infusion. During the oil change, the transformer's safety is ensured to prevent any accidents. Upon completion, not only the oil level is checked but also temperature variations are monitored to guarantee stable transformer operation.
2. Physical and Chemical Performance Testing
Moisture Quantity: Moisture content is a crucial aspect affecting the insulating efficiency of transformer oil. Regular monitoring of moisture levels is essential to maintain stable insulation properties.
Viscosity Evaluation: The viscosity of transformer oil is essential for its cooling performance. Assessing viscosity ensures that the oil can efficiently dissipate heat at high temperatures while maintaining good flow properties at low temperatures.
Flammability Indicators: Flash point and ignition point are key metrics for evaluating the combustion characteristics of transformer oil. Lower values may indicate a higher risk of oil volatilization and ignition, thereby enhancing the potential for fire hazards.
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Customer Testimonials
"I'm writing from Russia, and I must commend Haikun Petrochemical Technology Co., Ltd. on their exceptional service. Their industrial lubricants have significantly improved the efficiency of our machinery, and their customer support is always prompt and helpful. A true partner in our success." — Russia, Ivan Petrov
