SINOPEC Transformer Oil is blended with highly refined mineral base oil and well-chosen anti-oxidizer. Without Polychlorinated Biphenyl (PCB), it is suitable for insulation and cooling for transformer, oil immersed switch and other insulation device of electrical appliances.The product comprises several grades such as 10, 25, 40, 45 according to its low temperature performance.
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AdvantagesÂ
1.Outstanding electrical insulation performance, effectively preventing occurrence of discharge in electric field
2.Good oxidation stability, effectively preventing formation of acidic material and sludge
3.Good thermal conductivity, ensuring effective cooling of transformer core and coiling
Performance
The product meets the following specifications:
 1. GB 2536-90
 2.Q/SH303 535-2009
 3. IEC 60296-2003
ApplicationsÂ
As insulating and cooling medium for transformer of 330kV or below as well as electrical appliance with similar requirements
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Typical properties
Items |
Transformer oil |
|||
 |
10 |
25 |
40 |
45 |
Kinematic viscosity (40ºC), mm2/s |
8.931 |
9.395 |
9.912 |
9.252 |
Flash point (Closed), ºC |
162 |
153 |
158 |
154 |
Pour point, ºC |
-12 |
-27 |
-45 |
-51 |
Freezing point, ºC |
- |
- |
- |
-55 |
Breakdown voltage, Kv |
50 |
47 |
50 |
53 |
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