Transformer Oil I-30 Model
Naphthenic transformer oil is a kind of transformer oil which is widely used in power equipment, and its main component is naphthenic oil, which is a kind of mineral oil. With its excellent performance and wide range of applications, naphthenic transformer oil occupies an important position in the power industry.
Product Details：Transformer Oil I-30 Model
Comparison of naphthenic transformer oils with paraffin-based transformer oils
Heat Dissipation: Compared to paraffin-based transformer oils, naphthenic transformer oils have greater heat dissipation. For example, at the same viscosity, the heat transfer coefficient of naphthenic transformer oil is 8% to 11% higher than paraffin-based oils at 40℃.
PARAMETER：
Sports Event | GB2536-11 1-30°C (general purpose) Quality indicators | Typical properties | Test Methods
|
Minimum Cold Commissioning Temperature (LCSET)/°C | -30 | - | - |
Functional characteristics | |||
Pour Point/°C | ≯-40 | -51 | GB/T 3535 |
Kinematic viscosity (40°C)/(mm²/s) | ≯12 | 9.2 | GB/T 265 |
Kinematic viscosity (-30°C)/(mm²/s) | ≯1800 | 1449 | |
Water content/(mg/kg) | ≯30 | 19 | GB/T 7600 |
Breakdown voltage/kV | ≮30 | 66 | GB/T 507 |
Density (20°C)/(kg/m³) | ≯895 | 886.0 | SH/T 0604 |
Dielectric loss factor (90°C) | ≯0.005 | 0.0008 | GB/T 5654 |
Refining/stabilizing properties | |||
exterior condition | clear and transparent | clear and transparent | visual assessment |
Acid value (as 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 |
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) | ≯0.1 | <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 | 0.19 | |
--Oil sludge (mass fraction)/% | ≯0.8 | 0.03 | |
--Dielectric loss factor (90°C) | ≯0.500 | 0.051 | GB/T 5654 |
HSE Characteristics | |||
Flash point (closed)/°C | ≮135 | 142 | GB/T 261 |
PCA content (mass fraction)/% | ≯3 | <3 | NB/SH/T 0838 |
Polyoxybiphenyl (PCB) content/(mg/kg) | undetectable | not detected | SH/T 0803 |
1. Executive Standard: GB 2536-2011 I-30 ℃ (general).
2. The main uses of transformer oil:
(1) Transformer
Transformer oil is an important part of the transformer, used to insulate and cool the various parts of the transformer, such as windings, chips and so on.
It can effectively provide electrical insulation, prevent electric arc and electric shock, and cool the transformer to ensure normal operation.
(2) Other electric equipment
In addition to transformers, transformer oil can also be used for insulation and cooling of other electric equipment, such as cables, switchgear, reactors, circuit breakers and so on.
In some power electronic equipment, such as power inverters, power capacitors, etc., transformer oil is also needed for insulation and cooling.
(3) Power system maintenance
Transformer oil also plays an important role in the maintenance and upkeep of power systems.
It can be used to clean and flush equipment and remove dirt and impurities.
Through chemical analysis and physical testing of transformer oil, the health of the equipment can be judged and potential failures can be found in time.
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