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| location：Home＞Products＞Yi-Chiu Chemical＞Insulating Oil＞Special-grade insulating oil |
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Special-grade insulating oil |
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This oil product series is an electrical insulating oil made from high-grade
naphthene-based saturated hydrocarbon crude oils. They are specially developed
according to the characteristics of transformer oils and conform to the material
standard of Taiwan Power Company, I002 (91-11). The oils have features such as high
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dielectric strength, high resistance coefficient, low power factor, high chemical
stability, low viscosity, low flow point and low volatility. They are free of insulators,
metal materials and other foreign materials that may corrode the motor. |
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Characteristics include |
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- High dielectric strength, high resistance coefficient, and low power factor.
- Low moisture content and high dielectric strength.
- High anti-oxidation capability to reduce the generation of sludge effectively.
- Low viscosity that facilitates circulation, convection and heat dissipation.
- Low flow point that preserves good fluidity when the ambient temperature
decreases.
- High flash point, high security, low volatility and less susceptibility to loss due
to evaporation.
- Free of chemical salts and other pollutants that may corrode the copper metal of
transformers.
- Free of free sulfur and corrosive sulfur that may corrode the copper metal of
transformers.
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Applicable Scope |
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- Transformer Oil.
- Oil-bath electrical switches, such as circuit breakers, storage batteries
(capacitors), and cables.
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Table of Properties and Specifications |
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Test Item |
YC-I002
Special-grade Insulating Oil |
Value of
Taiwan Power Company Specifications*1
I002 (91-11) |
Test Method |
Appearance |
Clear without sediment |
Clear without sediment |
ASTM D1524 |
Color |
Below 0.5 |
Below 0.5 |
ASTM D1500 |
Specific gravity at 15℃ /15 ℃ |
Below 0.91 |
Below 0.91 |
ASTM D1298 |
Flash point (℃) |
Above 147 |
Above 145 |
ASTM D92 |
Flow point (℃) |
Below -40℃ |
Below -27.5℃ |
ASTM D97 |
Viscosity
(CST) |
100℃，cSt |
Below 3.0 |
Below 3.0 |
ASTM D445 |
40 ℃，cSt |
Below 12.0 |
Below 12.0 |
0 ℃ ，cSt |
Below 76.0 |
Below 76.0 |
Interface tension Dynes/cm, 25°C |
Above 42 |
Above 40 |
ASTM D971 |
Neutralization No. mg KOH/g |
Below 0.01 |
Below 0.03 |
ASTM D974 |
Corrosive sulfur |
None |
None |
ASTM D1275 |
Anti-oxidizer %(quality ratio) |
Below 0.08 |
Below 0.08 |
ASTM D2668 |
Moisture cotnent PPM |
Below 30 |
Below 30 |
ASTM D1533-B |
Oxidation stability |
72
hour |
Sludge % (quality ratio) |
Below 0.15 |
Below 0.15 |
ASTM D2440 |
total acidity
mgKOH/g |
Below 0.50 |
Below 0.5 |
164
hour |
Sludge % (quality ratio) |
Below 0.30 |
Below 0.3 |
total acidity
mgKOH/g |
Below 0.60 |
Below 0.6 |
Dielectric
strength
(KVrms) |
Upon delivery |
Above 50 |
Above 30 |
IEC-60156 |
After oil filtering |
Above 60 |
Above 50 |
Power factor
(40-60Hz) |
25℃ |
Below 0.0005 |
Not tested |
IEC-60247 |
90℃ |
Below 0.003 |
Below 0.005 |
100℃ |
Below 0.003 |
Not tested |
Resistance
coefficient
(Ω-Cm) |
50℃ |
Above 5.00E+14 |
Above 1.0E+14 |
ASTM D1169 |
85℃ |
Above 5.00E+13 |
Not tested |
PCB |
None |
Not detected*2 |
ASTM D4059 |
*1：The values of Taiwan Power Company specifications are applicable to the newly purchased bottled transformer oils.
*2：The detection limit shall not exceed 2ppmw. |
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