Insulating Oil For Transformers U-20
The oil in the transformer mainly plays a role in heat dissipation and cooling during operation.
Provide insulation and maintenance for windings (maintain good insulation condition).
The transformer oil has an arc extinguishing effect at the high-voltage lead and the contact point of the tap changer to prevent the generation of corona and arc discharge.
Transformer oil is widely used as a liquid seal in hydraulic safety valves.
Product Details：Insulating Oil For Transformers U-20
Improve oxidation stability and minimize the formation of oil sludge in transformers.
The sulfur content is below the detection limit, which helps to extend the service life of transformers.
Reduce the content of aromatics while providing a consistent tendency for gas evolution.
Weight reduction of 5-10%, high transportation cost-effectiveness.
Industry leading high-quality products and supply stability.
PARAMETER：
Sports Event | IEC60296:2020 TVBUs (LCSET-30°C) Quality indicators | Typical properties | Test Methods |
Functional characteristics | |||
Pour Point/°C | ≯-30 | -35 | ISO 3016 |
Kinematic viscosity (40°C)/(mm²/s) | ≯12 | 10.1 | ISO 3104 |
Kinematic viscosity (-30°C)/(mm²/s) | ≯1800 | 1500 | |
Water content/(mg/kg) | ≯30 | 22 | IEC 60814 |
Breakdown voltage/kV | - | - | IEC 60156 |
-Untreated oil | ≮30 | 40-70 | |
-Treated oil | ≮70 | >70 | |
Density (20°C)/(kg/m³) | ≯895 | 883 | ISO 12185 |
Dielectric loss factor (90°C) | ≯0.005 | <0.001 | IEC 60247 |
Refining/stabilizing properties | |||
saturation (color theory) | ≯1.5 | 0.5 | ISO 2049 |
exterior condition | Clear and transparent, no precipitation | Clear and transparent, no precipitation | visual assessment |
Acid value/(mgKOH/g) | ≯0.01 | <0.01 | IEC 62021-1 |
Interfacial tension/(mN/m) | ≮40 | 44 | ASTMD 971 |
corrosive sulfur | non-corrosive | non-corrosive | DIN 51353 |
corrosive sulfur | - | non-corrosive | ASTMD 1275B |
Potentially corrosive sulfur | non-corrosive | non-corrosive | IEC62535 |
DBDS/(mg/kg) | Not detectable (<5) | not detected | IEC 62697-1 |
Antioxidant content/% | Not detectable (<0.01) | not detected | IEC 60666 |
Metal passivator/(mgkg) | Not detectable (<5) | not detected | IEC 60666 |
2-Furfural content and related substances (single component) (mg/kg) | Not detectable (<0.05) | <0.01 | IEC 61198 |
Operational characteristics | |||
Chlorine stability (164h) | - | - | IEC 61125 |
--Total acid value (mg KOH/g) | ≯1.2 | 0.70 | |
-- Oil sludge/% | ≯0.8 | 0.35 | |
--Dielectric loss factor (90°C) | ≯0.500 | 0.040 | IEC 60247 |
HSE Characteristics | |||
Flash point (closed)/°C | ≮135 | 145 | ISO 2719 |
PCA content/% | <3 | <3 | IP 346 |
Polychlorinated biphenyl (PCB) content/(mg/kg) | undetectable | undetectable | IEC 61619 |
1. Classification: Transformer oil
2. Executive Standard: GB 2536-2011 U-20 ℃ (general).
3. Application Scope: U-20 transformer oil is suitable for transformers and electrical equipment with similar requirements that users require oil without antioxidants.
4. Performance requirements for transformer insulation oil：
(1) Antioxidant performance: Antioxidant performance refers to the ability of insulating oil to maintain stability under the action of high temperature and oxygen. The better the antioxidant performance, the longer the lifespan of the insulating oil.
(2) Corrosion resistance: Corrosion resistance refers to the ability of insulating oil to corrode the internal metal components of transformers. The better the corrosion resistance, the longer the service life of the transformer.
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FAQ：
Q:Can you give me a discount price ?
A:Yes, it depends on your quantity.
