High-Performance Transformer Insulating Oil
Mineral oil, derived from natural petroleum, stands as the standard liquid dielectric in transformers, distinguished by its remarkable insulating abilities and essential function in transformer heat dissipation and arc extinguishing. In the event of an arc, the oil promptly engages, cooling it intensely to halt the arc. Additionally, it efficiently evacuates heat and gaseous emissions from the discharge region, swiftly reducing the voltage intensity, thus controlling the discharge effectively.
Product Details：High-Performance Transformer Insulating Oil
Boasting an array of merits, insulating oils exhibit remarkable dielectric strength, elevated flash points, low viscosity, purity from organic acids, alkalis, and corrosive sulfur, superior anti-emulsification capabilities, minimal slag precipitation during regular operation, swift precipitation of arc byproducts, as well as a low pour point. Collectively, these attributes contribute to their exceptional insulating and cooling functions in electrical equipment.
PARAMETER：
Sports Event | GB2536-2011 1-20°C (special) indicator | Typical Properties | Test Methods |
Minimum Cold Commissioning Temperature (LCSET)/°C | -20 | - | - |
Functional Characteristics | |||
Pour Point/°C | ≯-30 | <-35 | GB/T 3535 |
Kinematic Viscosity (40°C)/(Mm²/S) | ≯12 | 66 | GB/T 265 |
Kinematic Viscosity (-20°C)/(Mm²/S) | ≯1800 | 503 | |
Water Content/(Mg/Kg) | ≯30 | 21 | GB/T 7600 |
Breakdown Voltage/KV Untreated Oil | ≮30 | 69 | GB/T 507 |
Density (20°C)/(Kg/M³) | ≯895 | 886.7 | SH/T 0604 |
Aniline Point／℃ | reporting | 78 | GB/T 262 |
Dielectric Loss Factor (90°C) | ≯0.005 | 0.0005 | GB/T 5654 |
Refining/Stabilizing Properties | |||
Exterior Condition | Clear and transparent, no sediment | Clear and transparent, no sediment | 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 | 46 | GB/T 6541 |
Total Sulfur Content (Mass Fraction)/% | ≯0.15 | 0.002 | SH/T 0689 |
Corrosive Sulfur | non-corrosive | non-corrosive | SH/T0804 |
Content of Antioxidant (Mass Fraction)/% | 0.08~0.40 | 0.30 | NB/SH/T0802 |
2-Furfural Content/(Mg/Kg) | ≯0.05 | <0.01 | NB/SH/T0812 |
Operational Characteristics | |||
Oxidation Stability (120°C) | - | - | NB/SH/T 0811 |
Test Time: 500h | - | - | |
--Total Acid Value (in KOH)/(Mg/G) | ≯0.3 | 0.15 | |
--Oil Sludge (Mass Fraction)/% | ≯0.05 | 0.02 | |
--Dielectric Loss Factor (90°C) | ≯0.050 | 0.024 | GB/T 5654 |
Gassing/(Mm³/Min) | reporting | +38 | NB/SH/T 0810 |
Electrically Charged Tendency (ECT)/(μC/M³) | reporting | 1 | DL/T 385 |
HSE Characteristics | |||
Flash Point (Closed)/°C | ≮135 | 142 | GB/T 261 |
PCA Content (Mass Fraction)/% | ≯3 | 1.5 | NB/SH/T 0838 |
Polychlorinated Biphenyl (PCB) Content/(Mg/Kg) | undetectable | undetectable | SH/T 0803 |
1. Transformer Oil Service Life
The typical timeframe for changing transformer oil is between 5 and 10 years. It’s crucial to recognize that this is only a general reference, and the specific replacement timeline should be evaluated according to the transformer’s unique circumstances.
In conclusion, the longevity of transformer oil is a complex topic influenced by various factors. To ensure the transformer runs efficiently and to maximize its lifespan, it is advisable to routinely check and assess the transformer oil, replacing it as necessary based on the actual conditions.
2. Factors Affecting Service Life
Transformer Load: If a transformer is subjected to prolonged high loads, the oil may age at an increased rate, shortening its service life. Hence, controlling the transformer load effectively is vital for maximizing the oil's longevity.
Oil Quality: Transformer oil quality is a key factor that affects its service life. High-grade oil exhibits improved thermal stability and resistance to aging, which can help prolong its lifespan. On the other hand, low-quality oil may deteriorate rapidly, resulting in a shorter lifespan.
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Customer Testimonials
"The industrial lubricating oil from Haikun is fantastic. It's long-lasting, efficient, and has all the necessary certifications. The team is very professional. – Germany, Anna Schmidt"
