Transformer oil properties. The standard transformer oil based on qualifications, requirements of the electricity generating authority of Thailand. Are as follows:1. have a high dielectric strength greater than 30 kv. 2. Power factor lower than 8.0 3. resistant to deterioration based on the life of the transformer.4. resistant to chemical reactions that can occur inside the transformer.5. cooling capability.6. low evaporation rate.7. There are no toxic ingredients of prohibited substances.
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